All Stories

  1. Formation of Hg droplets was realized at ambient conditions

    Article • Inorganic Chemistry, May 2021, American Chemical Society (ACS)

    Dr S. ABRAHAM JOHN

  2. When Hg(II) reacts with Ag(0) no amalgamation was noticed

    Article • Inorganic Chemistry, May 2021, American Chemical Society (ACS)

    Dr S. ABRAHAM JOHN

  3. Hydroxyl rich graphene quantum dots for the determination of Hg(II) in the presence of large concentration of major interferents and in living cells

    Article • Microchemical Journal, September 2020, Elsevier

    Dr S. ABRAHAM JOHN

  4. Tunable electrochemical synthesis of 3D nucleated microparticles like Cu-BTC MOF-carbon nanotubes composite: Enzyme free ultrasensitive determination of glucose in a complex biological fluid

    Article • Electrochimica Acta, September 2020, Elsevier

    Dr S. ABRAHAM JOHN

  5. Bioengineered Graphene Oxide Microcomposites Containing Metabolically Versatile Paracoccus sp. MKU1 for Enhanced Catechol Degradation

    Article • ACS Omega, July 2020, American Chemical Society (ACS)

    Dr S. ABRAHAM JOHN

  6. Ultrasonic Assisted Synthesis of Size-Controlled Cu-Metal–Organic Framework Decorated Graphene Oxide Composite: Sustainable Electrocatalyst for the Trace-Level Determination of Nitrite in Environmental Water Samples

    Article • ACS Omega, June 2020, American Chemical Society (ACS)

    Dr S. ABRAHAM JOHN

  7. Covalent organic framework film as an effective electrocatalyst for the simultaneous determination of dihydroxybenzene isomers in water samples

    Article • Sensors and Actuators B Chemical, June 2020, Elsevier

    Dr S. ABRAHAM JOHN

  8. Selective receptor for Fe(III) ion with a fluorescence-ON pyrene motif in semi-aqueous solution

    Article • Journal of Photochemistry and Photobiology A Chemistry, April 2020, Elsevier

    Dr S. ABRAHAM JOHN

  9. Study on the interactions between graphene quantum dots and Hg(II): Unraveling the origin of photoluminescence quenching of graphene quantum dots by Hg(II)

    Article • Colloids and Surfaces A Physicochemical and Engineering Aspects, April 2020, Elsevier

    Dr S. ABRAHAM JOHN

  10. Leaching of AuNPs from the surface of GO: Sensitive turn on fluorescence detection of toxic preservative

    Article • Food Chemistry, March 2020, Elsevier

    Dr S. ABRAHAM JOHN

  11. Negative Potential-Induced Growth of Surfactant-Free CuO Nanostructures on an Al–C Substrate: A Dual In-Line Sensor for Biomarkers of Diabetes and Oxidative Stress

    Article • ACS Sustainable Chemistry & Engineering, February 2020, American Chemical Society (ACS)

    Dr S. ABRAHAM JOHN

  12. Fabrication of low-cost sustainable electrocatalyst: a diagnostic tool for multifunctional disorders in human fluids

    Article • Journal of Materials Chemistry B, January 2020, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  13. Free-standing Au-Ag nanoparticles on carbon cloth: A non-enzymatic flexible electrochemical sensor for the biomarker of oxidative stress

    Article • Applied Surface Science, November 2019, Elsevier

    Dr S. ABRAHAM JOHN

  14. Hetero atoms doped carbon dots modified electrodes for the sensitive and selective determination of phenolic anti-oxidant in coconut oil

    Article • Journal of Electroanalytical Chemistry, September 2019, Elsevier

    Dr S. ABRAHAM JOHN

  15. Carbon dots stabilized silver–lipid nano hybrids for sensitive label free DNA detection

    Article • Biosensors and Bioelectronics, May 2019, Elsevier

    Dr S. ABRAHAM JOHN

  16. Organic solvent free in situ growth of flower like Co-ZIF microstructures on nickel foam for glucose sensing and supercapacitor applications

    Article • Electrochimica Acta, May 2019, Elsevier

    Dr S. ABRAHAM JOHN

  17. Water-soluble MoS2 quantum dots as effective fluorescence probe for the determination of bilirubin in human fluids

    Article • Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, May 2019, Elsevier

    Dr S. ABRAHAM JOHN

  18. Silver nanoparticles capped with carbon dots as a fluorescent probe for the highly sensitive “off–on” sensing of sulfide ions in water

    Article • Analytical and Bioanalytical Chemistry, March 2019, Springer Science + Business Media

    Dr S. ABRAHAM JOHN

  19. Real time detection of adenosine and theophylline in urine and blood samples using graphene modified electrode

    Article • Sensors and Actuators B Chemical, January 2019, Elsevier

    Dr S. ABRAHAM JOHN

  20. Highly selective naked eye detection of vitamin B1 in the presence of other vitamins using graphene quantum dots capped gold nanoparticles

    Article • New Journal of Chemistry, January 2019, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  21. Non-enzymatic determination of purine nucleotides using a carbon dot modified glassy carbon electrode

    Article • Analytical Methods, January 2019, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  22. Ultrasensitive and Selective Hydrazine Determination in Water Samples Using Ag–Cu Heterostructures-Grown Indium Tin Oxide Electrode via Environmentally Benign Methods

    Article • ACS Sustainable Chemistry & Engineering, October 2018, American Chemical Society (ACS)

    Dr S. ABRAHAM JOHN

  23. Fluorogenic mercury ion sensor based on pyrene-amino mercapto thiadiazole unit

    Article • Journal of Hazardous Materials, February 2018, Elsevier

    Dr S. ABRAHAM JOHN

  24. Inner filter effect based selective detection of picric acid in aqueous solution using green luminescent copper nanoclusters

    Article • New Journal of Chemistry, January 2018, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  25. Selective and sensitive determination of the antidote of heparin using Ag-GQDs by optical methods

    Article • Analytical Methods, January 2018, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  26. Displacement reduction routed Au–Pt bimetallic nanoparticles: a highly durable electrocatalyst for methanol oxidation and oxygen reduction

    Article • Sustainable Energy & Fuels, January 2018, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  27. Electrodeposition of CuO from Cu-MOF on glassy carbon electrode: A non-enzymatic sensor for glucose

    Article • Journal of Electroanalytical Chemistry, August 2017, Elsevier

    Dr S. ABRAHAM JOHN

  28. Fabrication of nitrogen-doped carbon dots for screening the purine metabolic disorder in human fluids

    Article • Biosensors and Bioelectronics, August 2017, Elsevier

    Dr S. ABRAHAM JOHN

  29. Fast growth of Au-Pt bimetallic nanoparticles on SWCNTs: Composition dependent electrocatalytic activity towards glucose and hydrogen peroxide

    Article • Journal of Electroanalytical Chemistry, August 2017, Elsevier

    Dr S. ABRAHAM JOHN

  30. Ultrasensitive optical sensor for hydrogen peroxide using silver nanoparticles synthesized at room temperature by GQDs

    Article • Sensors and Actuators B Chemical, August 2017, Elsevier

    Dr S. ABRAHAM JOHN

  31. Silver nanoparticles built-in zinc metal organic framework modified electrode for the selective non-enzymatic determination of H 2 O 2

    Article • Electrochimica Acta, May 2017, Elsevier

    Dr S. ABRAHAM JOHN

  32. Naked eye and spectrophotometric detection of chromogenic insecticide in aquaculture using amine functionalized gold nanoparticles in the presence of major interferents

    Article • Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, February 2017, Elsevier

    Dr S. ABRAHAM JOHN

  33. Nitrogen-Doped Graphene as a Robust Scaffold for the Homogeneous Deposition of Copper Nanostructures: A Nonenzymatic Disposable Glucose Sensor

    Article • ACS Sustainable Chemistry & Engineering, January 2017, American Chemical Society (ACS)

    Dr S. ABRAHAM JOHN

  34. Pyrene–antipyrine based highly selective and sensitive turn-on fluorescent sensor for Th(iv)

    Article • New Journal of Chemistry, January 2017, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  35. Simultaneous growth of spherical, bipyramidal and wire-like gold nanostructures in solid and solution phases: SERS and electrocatalytic applications

    Article • CrystEngComm, January 2017, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  36. A novel pyrene based fluorescent probe for selective detection of cysteine in presence of other bio-thiols in living cells

    Article • Biosensors and Bioelectronics, September 2016, Elsevier

    Dr S. ABRAHAM JOHN

  37. Highly sensitive interference-free electrochemical determination of pyridoxine at graphene modified electrode: Importance in Parkinson and Asthma treatments

    Article • Journal of Colloid and Interface Science, July 2016, Elsevier

    Dr S. ABRAHAM JOHN

  38. Monitoring isoniazid level in human fluids in the presence of theophylline using gold@platinum core@shell nanoparticles modified glassy carbon electrode

    Article • Sensors and Actuators B Chemical, July 2016, Elsevier

    Dr S. ABRAHAM JOHN

  39. Formation of electrochemically reduced graphene oxide on melamine electrografted layers and its application toward the determination of methylxanthines

    Article • Analytical Biochemistry, March 2016, Elsevier

    Dr S. ABRAHAM JOHN

  40. Electroless deposition of Gold-Platinum Core@Shell Nanoparticles on Glassy Carbon Electrode for Non-Enzymatic Hydrogen Peroxide sensing#

    Article • Journal of Chemical Sciences, February 2016, Springer Science + Business Media

    Dr S. ABRAHAM JOHN

  41. A novel approach to fabricate stable graphene layers on electrode surfaces using simultaneous electroreduction of diazonium cations and graphene oxide

    Article • RSC Advances, January 2016, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  42. Sensitive determination of tannic acid using blue luminescent graphene quantum dots as fluorophore

    Article • RSC Advances, January 2016, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  43. Tuning the composition of gold–silver bimetallic nanoparticles for the electrochemical reduction of hydrogen peroxide and nitrobenzene

    Article • RSC Advances, January 2016, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  44. Non-enzymatic electrochemical sensing platform based on metal complex immobilized carbon nanotubes for glucose determination

    Article • RSC Advances, January 2016, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  45. Fabrication of different copper nanostructures on indium-tin-oxide electrodes: shape dependent electrocatalytic activity

    Article • CrystEngComm, January 2016, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  46. Stable determination of paracetamol in the presence of uric acid in human urine sample using melamine grafted graphene modified electrode

    Article • Journal of Electroanalytical Chemistry, January 2016, Elsevier

    Dr S. ABRAHAM JOHN

  47. 4-Amino-6-hydroxy-2-mercaptopyrimidine capped gold nanoparticles as fluorophore for the ultrasensitive and selective determination of l-cysteine

    Article • Sensors and Actuators B Chemical, December 2015, Elsevier

    Dr S. ABRAHAM JOHN

  48. Functionalized multiwalled carbon nanotubes-nanostructured conducting polymer composite modified electrode for the sensitive determination of uricase inhibitor

    Article • Electrochimica Acta, August 2015, Elsevier

    Dr S. ABRAHAM JOHN

  49. Highly sensitive determination of nitrite using FMWCNTs-conducting polymer composite modified electrode

    Article • Sensors and Actuators B Chemical, August 2015, Elsevier

    Dr S. ABRAHAM JOHN

  50. Chemical attachment of functionalized multiwalled carbon nanotubes on glassy carbon electrode for electrocatalytic application

    Article • Electrochimica Acta, May 2015, Elsevier

    Dr S. ABRAHAM JOHN

  51. Assembly of gold nanoparticles on graphene film via electroless deposition: spontaneous reduction of Au3+ ions by graphene film

    Article • RSC Advances, January 2015, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  52. Selective determination of mefenamic acid in the presence of 1000-fold excess paracetamol and caffeine using a multiwalled carbon nanotube–polymer composite electrode

    Article • Analytical Methods, January 2015, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  53. Modification of a glassy carbon electrode with gold–platinum core–shell nanoparticles by electroless deposition and their electrocatalytic activity

    Article • RSC Advances, January 2015, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  54. Sensitive and highly selective determination of vitamin B1 in the presence of other vitamin B complexes using functionalized gold nanoparticles as fluorophore

    Article • RSC Advances, January 2015, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  55. Fabrication of aminotriazole grafted gold nanoparticles films on glassy carbon electrode and its application towards the simultaneous determination of theophylline and uric acid

    Article • Sensors and Actuators B Chemical, December 2014, Elsevier

    Dr S. ABRAHAM JOHN

  56. Sensitive and selective determination of l-tryptophan at physiological pH using functionalized multiwalled carbon nanotubes–nanostructured conducting polymer composite modified electrode

    Article • Journal of Electroanalytical Chemistry, November 2014, Elsevier

    Dr S. ABRAHAM JOHN

  57. Simultaneous determination of neurotransmitters and a neuroprotector in human blood serum and urine samples using a diazonium grafted gold nanoparticle film electrode

    Article • Analytical Methods, September 2014, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  58. Fast growth of gold nanorods on solid substrate using electrochemically deposited gold seeds

    Article • Electrochemistry Communications, August 2014, Elsevier

    Dr S. ABRAHAM JOHN

  59. Spontaneous grafting: A novel approach to graft diazonium cations on gold nanoparticles in aqueous medium and their self-assembly on electrodes

    Article • Journal of Colloid and Interface Science, August 2014, Elsevier

    Dr S. ABRAHAM JOHN

  60. Formation of heteroaromatic diazonium grafted layers on gold nanoparticles and their electrocatalytic activity towards an important purine derivative

    Article • RSC Advances, July 2014, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  61. Synergistic effect of gold nanoparticles and amine functionalized cobalt porphyrin on electrochemical oxidation of hydrazine

    Article • New Journal of Chemistry, May 2014, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  62. Efficient oxidation of hydrazine using amine-functionalized cobalt and nickel porphyrin-modified electrodes

    Article • Journal of Solid State Electrochemistry, May 2014, Springer Science + Business Media

    Dr S. ABRAHAM JOHN

  63. Gold nanoparticles decorated on cobalt porphyrin-modified glassy carbon electrode for the sensitive determination of nitrite ion

    Article • Journal of Colloid and Interface Science, May 2014, Elsevier

    Dr S. ABRAHAM JOHN

  64. Potentiodynamic formation of gold nanoparticles film on glassy carbon electrode using aminophenyl diazonium cations grafted gold nanoparticles: Determination of histamine H2 receptor antagonist

    Article • Electrochimica Acta, February 2014, Elsevier

    Dr S. ABRAHAM JOHN

  65. Graphene layer modified glassy carbon electrode for the determination of norepinephrine and theophylline in pharmaceutical formulations

    Article • Analytical Methods, January 2014, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  66. Economically viable sensitive and selective luminescent sensor for the determination of Au(iii) in environmental samples

    Article • RSC Advances, January 2014, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  67. Graphene and its nanocomposite material based electrochemical sensor platform for dopamine

    Article • RSC Advances, January 2014, Royal Society of Chemistry

    Dr Alagarsamy Pandikumar, Dr Subramaniam Jayabal, Dr S. ABRAHAM JOHN

  68. Effect of amine substituted at ortho and para positions on the electrochemical and electrocatalytic properties of cobalt porphyrins self-assembled on glassy carbon surface

    Article • Electrochimica Acta, January 2014, Elsevier

    Dr S. ABRAHAM JOHN

  69. Electrochemical determination of xanthine oxidase inhibitor drug in urate lowering therapy using graphene nanosheets modified electrode

    Article • Electrochimica Acta, January 2014, Elsevier

    Dr S. ABRAHAM JOHN

  70. Off–on and on–off chemosensors for ultratrace mercury(II) and copper(II) using functionalized thiazole and cadmium sulfide nanoparticles fluorophores

    Article • Sensors and Actuators B Chemical, January 2014, Elsevier

    Dr S. ABRAHAM JOHN

  71. Self-assembled monolayer of 2,9,16,23-tetrahydroxythiophenylphthalocyanatocobalt(II) on gold electrode and its electrocatalytic activity towards dioxygen reduction

    Article • Journal of Electroanalytical Chemistry, January 2014, Elsevier

    Dr S. ABRAHAM JOHN

  72. A turn-on highly selective and ultrasensitive determination of copper (II) in an aqueous medium using folic acid capped gold nanoparticles as the probe

    Article • Nanotechnology, November 2013, Institute of Physics Publishing

    Dr S. ABRAHAM JOHN

  73. Electrochemical marker for metastatic malignant melanoma based on the determination of l-dopa/l-tyrosine ratio

    Article • Sensors and Actuators B Chemical, November 2013, Elsevier

    Dr S. ABRAHAM JOHN

  74. Biopolymer capped silver nanoparticles as fluorophore for ultrasensitive and selective determination of malathion

    Article • Talanta, October 2013, Elsevier

    Dr S. ABRAHAM JOHN

  75. Electrochemical determination of guanosine 5′-monophosphate using the electropolymerized film of non-peripheral amine substituted nickel(II) phthalocyanine modified electrode

    Article • Electrochimica Acta, April 2013, Elsevier

    Dr S. ABRAHAM JOHN

  76. Picomolar melamine enhanced the fluorescence of gold nanoparticles: Spectrofluorimetric determination of melamine in milk and infant formulas using functionalized triazole capped goldnanoparticles

    Article • Biosensors and Bioelectronics, April 2013, Elsevier

    Dr S. ABRAHAM JOHN

  77. Simultaneous determination of uric acid, xanthine, hypoxanthine and caffeine in human blood serum and urine samples using electrochemically reduced graphene oxide modified electrode

    Article • Analytica Chimica Acta, April 2013, Elsevier

    Dr S. ABRAHAM JOHN

  78. Fabrication of Electrochemically Reduced Graphene Oxide Films on Glassy Carbon Electrode by Self-Assembly Method and Their Electrocatalytic Application

    Article • The Journal of Physical Chemistry C, February 2013, American Chemical Society (ACS)

    Dr S. ABRAHAM JOHN

  79. Synthesis, characterization and modification of functionalized pyrimidine stabilized gold nanoparticles on ITO electrode for the determination of tannic acid

    Article • Bioelectrochemistry, February 2013, Elsevier

    Dr S. ABRAHAM JOHN

  80. Protein protected gold nanoparticles as a fluorophore for the highly selective and ultrasensitive determination of bisphenol A in plastic samples

    Article • Analytical Methods, January 2013, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  81. Aggregation and de-aggregation of gold nanoparticles induced by polyionic drugs: spectrofluorimetric determination of picogram amounts of protamine and heparin drugs in the presence of 1000-fold concentration of major interferences

    Article • Journal of Materials Chemistry B, January 2013, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  82. Synthesis of non-peripheral amine substituted nickel(ii) phthalocyanine capped gold nanoparticles and their immobilization on electrode for the electrocatalytic oxidation of hydrazine

    Article • RSC Advances, January 2013, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  83. Micromolar Hg(ii) induced the morphology of gold nanoparticles: a novel luminescent sensor for femtomolar Hg(ii) using triazole capped gold nanoparticles as a fluorophore

    Article • Journal of Materials Chemistry A, January 2013, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  84. Growth of gold nanorods in solution and on ITO and Au substrates using non-peripheral amine functionalized nickel(ii) phthalocyanine capped gold nanoparticles as a seed solution

    Article • RSC Advances, January 2013, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  85. Highly sensitive determination of uric acid in the presence of major interferents using a conducting polymer film modified electrode

    Article • Bioelectrochemistry, December 2012, Elsevier

    Dr S. ABRAHAM JOHN

  86. Fabrication of optochemical and electrochemical sensors using thin films of porphyrin and phthalocyanine derivatives

    Article • Journal of Chemical Sciences, November 2012, Springer Science + Business Media

    Dr S. ABRAHAM JOHN

  87. Optochemical ammonia gas sensing properties of meso-substituted porphyrin derivatives immobilized Nafion film on glass slide

    Article • Sensors and Actuators B Chemical, November 2012, Elsevier

    Dr S. ABRAHAM JOHN

  88. Electrochemical determination of caffeine in the presence of paracetamol using a self-assembled monolayer of non-peripheral amine substituted copper(II) phthalocyanine

    Article • Electrochimica Acta, August 2012, Elsevier

    Dr S. ABRAHAM JOHN

  89. Simultaneous determination of vitamins B2, B9 and C using a heterocyclic conducting polymer modified electrode

    Article • Electrochimica Acta, July 2012, Elsevier

    Dr S. ABRAHAM JOHN

  90. Electrochemical determination of L-methionine using the electropolymerized film of non-peripheral amine substituted Cu(II) phthalocyanine on glassy carbon electrode

    Article • Bioelectrochemistry, June 2012, Elsevier

    Dr S. ABRAHAM JOHN

  91. Selective and Sensitive Electrochemical Sensor for L-Methionine at Physiological pH Using Functionalized Triazole Polymer Film Modified Electrode

    Article • Electroanalysis, May 2012, Wiley

    Dr S. ABRAHAM JOHN

  92. Electrochemical sensor for guanine using a self-assembled monolayer of 1,8,15,22-tetraaminophthalocyanatonickel(II) on glassy carbon electrode

    Article • Analytical Biochemistry, May 2012, Elsevier

    Dr S. ABRAHAM JOHN

  93. Ultrasensitive fluorescence-quenched chemosensor for Hg(II) in aqueous solution based on mercaptothiadiazole capped silver nanoparticles

    Article • Journal of Hazardous Materials, April 2012, Elsevier

    Dr S. ABRAHAM JOHN

  94. Selective determination of inosine in the presence of uric acid and hypoxanthine using modified electrode

    Article • Analytical Biochemistry, February 2012, Elsevier

    Dr S. ABRAHAM JOHN

  95. Electrochemical sensor for neurotransmitters at physiological pH using a heterocyclic conducting polymer modified electrode

    Article • The Analyst, January 2012, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  96. Mercaptothiadiazole capped gold nanoparticles as fluorophore for the determination of nanomolar mercury(ii) in aqueous solution in the presence of 50 000-fold major interferents

    Article • The Analyst, January 2012, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  97. Simultaneous determination of two important dopamine metabolites at physiological pH by voltammetry

    Article • Analytical Methods, January 2012, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  98. Fabrication, characterization and application of a grafting based gold nanoparticles electrode for the selective determination of an important neurotransmitter

    Article • Journal of Materials Chemistry, January 2012, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  99. Selective determination of l-tyrosine in the presence of ascorbic and uric acids at physiological pH using the electropolymerized film of 3-amino-5-mercapto-1,2,4-triazole

    Article • Sensors and Actuators B Chemical, January 2012, Elsevier

    Dr S. ABRAHAM JOHN

  100. Ultrasensitive and selective spectrofluorimetric determination of Hg(II) using a dimercaptothiadiazole fluorophore

    Article • Journal of Luminescence, December 2011, Elsevier

    Dr S. ABRAHAM JOHN

  101. Ultrasensitive detection of l-cysteine using gold–5-amino-2-mercapto-1,3,4-thiadiazole core–shell nanoparticles film modified electrode

    Article • Biosensors and Bioelectronics, December 2011, Elsevier

    Dr S. ABRAHAM JOHN

  102. Highly sensitive detection of HCl gas using a thin film of meso-tetra(4-pyridyl)porphyrin coated glass slide by optochemical method

    Article • Sensors and Actuators B Chemical, November 2011, Elsevier

    Dr S. ABRAHAM JOHN

  103. Spectrofluorimetric determination of picogram level Pb(II) using a dimercaptothiadiazole fluorophore

    Article • Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, November 2011, Elsevier

    Dr S. ABRAHAM JOHN

  104. Electropolymerization of 3-amino-5-mercapto-1,2,4-triazole on glassy carbon electrode and its electrocatalytic activity towards uric acid

    Article • Electrochimica Acta, October 2011, Elsevier

    Dr S. ABRAHAM JOHN

  105. Selective determination of 3,4-dihydroxyphenylacetic acid in the presence of ascorbic acid using 4-(dimethylamino)pyridine capped gold nanoparticles immobilized on gold electrode

    Article • Colloids and Surfaces B Biointerfaces, October 2011, Elsevier

    Dr S. ABRAHAM JOHN

  106. Fabrication of conducting polymer-gold nanoparticles film on electrodes using monolayer protected gold nanoparticles and its electrocatalytic application

    Article • Electrochimica Acta, August 2011, Elsevier

    Dr S. ABRAHAM JOHN

  107. Synthesis, Characterization and Electrocatalytic Activity of Fused Gold Nanoparticles

    Article • Journal of Nanoscience and Nanotechnology, March 2011, American Scientific Publishers

    Dr S. ABRAHAM JOHN

  108. Selective determination of norepinephrine in the presence of ascorbic and uric acids using an ultrathin polymer film modified electrode

    Article • Electrochimica Acta, February 2011, Elsevier

    Dr S. ABRAHAM JOHN

  109. Direct Growth of Gold Nanorods on Gold and Indium Tin Oxide Surfaces: Spectral, Electrochemical, and Electrocatalytic Studies

    Article • The Journal of Physical Chemistry C, December 2010, American Chemical Society (ACS)

    Dr S. ABRAHAM JOHN

  110. In Situ Fabrication of meso -Tetrakis(4-sulfonatophenyl)porphyrin Nanostructures with Excitonic Absorption on Glass Substrate

    Article • ACS Applied Materials & Interfaces, November 2010, American Chemical Society (ACS)

    Dr S. ABRAHAM JOHN

  111. Selective determination of homocysteine at physiological pH using nanostructured film of aminothiadiazole modified electrode

    Article • Bioelectrochemistry, October 2010, Elsevier

    Dr S. ABRAHAM JOHN

  112. Studies on ligand exchange reaction of functionalized mercaptothiadiazole compounds onto citrate capped gold nanoparticles

    Article • Materials Chemistry and Physics, August 2010, Elsevier

    Dr S. ABRAHAM JOHN

  113. Highly sensitive electrochemical determination of nitric oxide using fused spherical gold nanoparticles modified ITO electrode

    Article • Electrochimica Acta, April 2010, Elsevier

    Dr S. ABRAHAM JOHN

  114. Simultaneous determination of ascorbic acid, dopamine, uric acid and xanthine using a nanostructured polymer film modified electrode

    Article • Talanta, March 2010, Elsevier

    Dr S. ABRAHAM JOHN

  115. Highly sensitive determination of hydroxylamine using fused gold nanoparticles immobilized on sol–gel film modified gold electrode

    Article • Analytica Chimica Acta, March 2010, Elsevier

    Dr S. ABRAHAM JOHN

  116. Highly Sensitive Electrochemical Sensor for Nitric Oxide Using the Self-Assembled Monolayer of 1,8,15,22-Tetraaminophthalocyanatocobalt(II) on Glassy Carbon Electrode

    Article • Electroanalysis, March 2010, Wiley

    Dr S. ABRAHAM JOHN

  117. Selective Electrochemical Determination of Paracetamol Using Nanostructured Film of Functionalized Thiadiazole Modified Electrode

    Article • Electroanalysis, February 2010, Wiley

    Dr S. ABRAHAM JOHN

  118. Adsorption thermodynamics and kinetics study for the self-assembly of 1,8,15,22-tetraaminophthalocyanatocobalt(II) on glassy carbon surface

    Article • Electrochimica Acta, December 2009, Elsevier

    Dr S. ABRAHAM JOHN

  119. Modification of electrodes with nanostructured functionalized thiadiazole polymer film and its application to the determination of ascorbic acid

    Article • Electrochimica Acta, December 2009, Elsevier

    Dr S. ABRAHAM JOHN

  120. Nanostructured Aggregates of meso -Tetramesitylporphyrin on Solid Substrate

    Article • Langmuir, November 2009, American Chemical Society (ACS)

    Dr S. ABRAHAM JOHN

  121. Electropolymerized film of functionalized thiadiazole on glassy carbon electrode for the simultaneous determination of ascorbic acid, dopamine and uric acid

    Article • Bioelectrochemistry, November 2009, Elsevier

    Dr S. ABRAHAM JOHN

  122. Simultaneous determination of paracetamol and ascorbic acid using tetraoctylammonium bromide capped gold nanoparticles immobilized on 1,6-hexanedithiol modified Au electrode

    Article • Electrochimica Acta, November 2009, Elsevier

    Dr S. ABRAHAM JOHN

  123. Electrochemical and spectral studies of self-assembled monolayer of 1,8,15,22-tetraaminophthalocyanatocobalt(II) on indium tin oxide surface

    Article • Journal of Electroanalytical Chemistry, September 2009, Elsevier

    Dr S. ABRAHAM JOHN

  124. Selective electrochemical sensor for folic acid at physiological pH using ultrathin electropolymerized film of functionalized thiadiazole modified glassy carbon electrode

    Article • Biosensors and Bioelectronics, August 2009, Elsevier

    Dr S. ABRAHAM JOHN

  125. Short-time preparation and electrochemical properties of a single layer of tetraoctylammonium bromide capped Au nanoparticles on dithiol self-assembled monolayer-modified Au electrode

    Article • Journal of Electroanalytical Chemistry, August 2009, Elsevier

    Dr S. ABRAHAM JOHN

  126. Simultaneous determination of epinephrine, uric acid and xanthine in the presence of ascorbic acid using an ultrathin polymer film of 5-amino-1,3,4-thiadiazole-2-thiol modified electrode

    Article • Analytica Chimica Acta, August 2009, Elsevier

    Dr S. ABRAHAM JOHN

  127. Leaflike Structured Multilayer Assembly of Dimercaptothiadiazole on Gold Surface

    Article • The Journal of Physical Chemistry C, June 2009, American Chemical Society (ACS)

    Dr S. ABRAHAM JOHN

  128. Highly sensitive and selective amperometric determination of nitrite using electropolymerized film of functionalized thiadiazole modified glassy carbon electrode

    Article • Electrochemistry Communications, May 2009, Elsevier

    Dr S. ABRAHAM JOHN

  129. Determination of nanomolar uric and ascorbic acids using enlarged gold nanoparticles modified electrode

    Article • Analytical Biochemistry, March 2009, Elsevier

    Dr S. ABRAHAM JOHN

  130. Nanostructured electropolymerized film of 5-amino-2-mercapto-1,3,4-thiadiazole on glassy carbon electrode for the selective determination of l-cysteine

    Article • Electrochemistry Communications, February 2009, Elsevier

    Dr S. ABRAHAM JOHN

  131. Selective Electrochemical Epinephrine Sensor Using Self-Assembled Monomolecular Film of 1,8,15,22-Tetraaminophthalocyanatonickel(II) on Gold Electrode

    Article • Electroanalysis, November 2008, Wiley

    Dr S. ABRAHAM JOHN

  132. Optochemical sensing of hydrogen chloride gas using meso-tetramesitylporphyrin deposited glass plate

    Article • Analytica Chimica Acta, October 2008, Elsevier

    Dr S. ABRAHAM JOHN

  133. Amino group positions dependent morphology and coverage of electropolymerized metallophthalocyanine (M=Ni and Co) films on electrode surfaces

    Article • Electrochimica Acta, September 2008, Elsevier

    Dr S. ABRAHAM JOHN

  134. Size dependent electrocatalytic activity of gold nanoparticles immobilized onto three dimensional sol–gel network

    Article • Journal of Electroanalytical Chemistry, June 2008, Elsevier

    Dr S. ABRAHAM JOHN

  135. Amino Group Position Dependent Orientation of Self-Assembled Monomolecular Films of Tetraaminophthalocyanatocobalt(II) on Au Surfaces

    Article • Langmuir, March 2008, American Chemical Society (ACS)

    Dr S. ABRAHAM JOHN

  136. Synthesis of mercaptothiadiazole-functionalized gold nanoparticles and their self-assembly on Au substrates

    Article • Nanotechnology, February 2008, Institute of Physics Publishing

    Dr S. ABRAHAM JOHN

  137. Charge-Transfer Interaction of Aromatic Thiols with 2,3-Dichloro-5,6-dicyano- p -benzoquinone:  Spectral and Quantum Mechanical Studies

    Article • The Journal of Physical Chemistry A, December 2007, American Chemical Society (ACS)

    Dr S. ABRAHAM JOHN

  138. Determination of l-dopa using electropolymerized 3,3′,3″,3‴-tetraaminophthalocyanatonickel(II) film on glassy carbon electrode

    Article • Biosensors and Bioelectronics, December 2007, Elsevier

    Dr S. ABRAHAM JOHN

  139. Electrocatalytic oxidation of ascorbic acid using a single layer of gold nanoparticles immobilized on 1,6-hexanedithiol modified gold electrode

    Article • Electrochimica Acta, November 2007, Elsevier

    Dr S. ABRAHAM JOHN

  140. Uric acid determination in the presence of ascorbic acid using self-assembled submonolayer of dimercaptothiadiazole-modified gold electrodes

    Article • Analytical Biochemistry, October 2006, Elsevier

    Dr S. ABRAHAM JOHN

  141. Solvent dependent dimercaptothiadiazole monolayers on gold electrode for the simultaneous determination of uric acid and ascorbic acid

    Article • Electrochemistry Communications, December 2005, Elsevier

    Dr S. ABRAHAM JOHN

  142. Simultaneous determination of uric acid and ascorbic acid using glassy carbon electrodes in acetate buffer solution

    Article • Journal of Electroanalytical Chemistry, June 2005, Elsevier

    Dr S. ABRAHAM JOHN

  143. Microenvironment effects on the electrochemical and photoelectrochemical properties of thionine loaded Nafion® films

    Article • Journal of Electroanalytical Chemistry, January 2004, Elsevier

    Dr S. ABRAHAM JOHN

  144. Multielectrochromic properties of methylene blue and phenosafranine dyes incorporated into Nafion® film

    Article • Journal of Electroanalytical Chemistry, April 2001, Elsevier

    Dr S. ABRAHAM JOHN

  145. Structural effects on the electrochemical and spectroelectrochemical properties of asymmetric viologens on the Au electrode surface

    Article • Journal of Electroanalytical Chemistry, October 2000, Elsevier

    Dr S. ABRAHAM JOHN

  146. Alkanethiol Structure and Supporting Electrolyte Effects on the Electrochemical and in Situ Fourier Transform IR Spectral Properties of Asymmetric Alkyl Viologen on the Electrode Surface

    Article • Langmuir, January 2000, American Chemical Society (ACS)

    Dr S. ABRAHAM JOHN

  147. Electrochemical and EQCM studies on the assembly of asymmetric viologen on bare and alkanethiol-coated Au electrodes

    Article • Journal of Electroanalytical Chemistry, November 1999, Elsevier

    Dr S. ABRAHAM JOHN

  148. A monomer–dimer equilibrium in self-assembled monolayers of N-ethyl-N′-octadecylviologen on the electrode surface. The influence of water content and hexafluorophosphate ion

    Article • Journal of Electroanalytical Chemistry, May 1999, Elsevier

    Dr S. ABRAHAM JOHN

  149. Use of Alkanethiol-Coated Electrodes To Study the Importance of Water Content on the Electrochemical Behavior of N -Ethyl- N ‘-octadecyl Viologen on a Gold Electrode Surface

    Article • Langmuir, May 1999, American Chemical Society (ACS)

    Dr S. ABRAHAM JOHN

  150. Influence of polymer structure on the electrochemistry of phenothiazine dyes incorporated into Nafion films

    Article • Journal of the Chemical Society Faraday Transactions, January 1994, Royal Society of Chemistry

    Dr S. ABRAHAM JOHN

  151. Photoinduced electron transfer reactions at methylene blue adsorbed nafion and clay coated electrodes

    Article • Research on Chemical Intermediates, June 1993, Springer Science + Business Media

    Dr S. ABRAHAM JOHN