All Stories

  1. Bienzyme–Polymer–Graphene Oxide Quaternary Hybrid Biocatalysts: Efficient Substrate Channeling under Chemically and Thermally Denaturing Conditions

    Article • ACS Catalysis, September 2015, American Chemical Society (ACS)

    Professor Challa V Kumar

  2. Fluorescent, Bioactive Protein Nanoparticles (Prodots) for Rapid, Improved Cellular Uptake

    Article • Bioconjugate Chemistry, March 2015, American Chemical Society (ACS)

    Professor Challa V Kumar

  3. Biological relevance of oxidative debris present in as-prepared graphene oxide

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

    Professor Challa V Kumar

  4. Toward the design of bio-solar cells: high efficiency cascade energy transfer among four donor–acceptor dyes self-assembled in a highly ordered protein–DNA matrix

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

    Professor Challa V Kumar

  5. Toward “Stable-on-the-Table” Enzymes: Improving Key Properties of Catalase by Covalent Conjugation with Poly(acrylic acid)

    Article • Bioconjugate Chemistry, August 2014, American Chemical Society (ACS)

    Professor Challa V Kumar

  6. Biofunctionalization of α-Zirconium Phosphate Nanosheets: Toward Rational Control of Enzyme Loading, Affinities, Activities and Structure Retention

    Article • ACS Applied Materials & Interfaces, June 2014, American Chemical Society (ACS)

    Professor Challa V Kumar

  7. Proton-Coupled Protein Binding: Controlling Lysozyme/Poly(acrylic acid) Interactions with pH

    Article • The Journal of Physical Chemistry, May 2014, American Chemical Society (ACS)

    Professor Challa V Kumar

  8. Efficient Biocatalysis in Organic Media with Hemoglobin and Poly(acrylic acid) Nanogels

    Article • Langmuir, May 2014, American Chemical Society (ACS)

    Professor Challa V Kumar

  9. Photophysical studies of an encapsulated neutral guest intercalated into the 2-dimensional space of α-Zr(iv) phosphate

    Article • Photochemical & Photobiological Sciences, February 2014, Springer Science + Business Media

    Professor Challa V Kumar

  10. A new method to diagnose peanut allergies by measuring antibodies in serum

    Article • The Analyst, January 2014, Royal Society of Chemistry

    Professor Mark W Peczuh, Professor Challa V Kumar

  11. Protein-based sensitive, selective and rapid fluorescence detection of picric acid in aqueous media

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

    Professor Challa V Kumar

  12. Correction: Ultrasensitive carbohydrate-peptide SPR imaging microarray for diagnosing IgE mediated peanut allergy

    Article • The Analyst, January 2014, Royal Society of Chemistry

    Professor Mark W Peczuh, Professor Challa V Kumar

  13. Tuning the Activities and Structures of Enzymes Bound to Graphene Oxide with a Protein Glue

    Article • Langmuir, December 2013, American Chemical Society (ACS)

    Professor Challa V Kumar

  14. Nanobio Interfaces: Charge Control of Enzyme/Inorganic Interfaces for Advanced Biocatalysis

    Article • Langmuir, November 2013, American Chemical Society (ACS)

    Professor Challa V Kumar

  15. Adsorption and Hydrolytic Activity of the Polycatalytic Cellulase Nanocomplex on Cellulose

    Article • ACS Applied Materials & Interfaces, September 2013, American Chemical Society (ACS)

    Professor Challa V Kumar

  16. Metal-Enzyme Frameworks: Role of Metal Ions in Promoting Enzyme Self-Assembly on α-Zirconium(IV) Phosphate Nanoplates

    Article • Langmuir, March 2013, American Chemical Society (ACS)

    Professor Challa V Kumar

  17. Highly Efficient Binding of Paramagnetic Beads Bioconjugated with 100 000 or More Antibodies to Protein-Coated Surfaces

    Article • Analytical Chemistry, December 2012, American Chemical Society (ACS)

    Professor Challa V Kumar

  18. Tuning Hemoglobin–Poly(acrylic acid) Interactions by Controlled Chemical Modification with Triethylenetetramine

    Article • The Journal of Physical Chemistry, October 2012, American Chemical Society (ACS)

    Professor Challa V Kumar

  19. Novel surface plasmon resonance sensor for the detection of heme at biological levels via highly selective recognition by apo-hemoglobin

    Article • Talanta, September 2012, Elsevier

    Professor Challa V Kumar

  20. Control of Enzyme–Solid Interactions via Chemical Modification

    Article • Langmuir, August 2012, American Chemical Society (ACS)

    Professor Challa V Kumar

  21. Ultra-stable hemoglobin–poly(acrylic acid) conjugates

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

    Professor Challa V Kumar

  22. Protein-Polymer Conjugates

    Article • September 2011, Wiley

    Professor Challa V Kumar

  23. Protein Polymer Conjugates: Improving the Stability of Hemoglobin with Poly(acrylic acid)

    Article • Langmuir, June 2011, American Chemical Society (ACS)

    Professor Challa V Kumar

  24. Photocleavage of avidin by a new pyrenyl probe

    Article • Journal of Photochemistry and Photobiology B Biology, June 2011, Elsevier

    Professor Challa V Kumar

  25. Computational and experimental investigations of mono-septanoside binding by Concanavalin A: correlation of ligand stereochemistry to enthalpies of binding

    Article • Organic & Biomolecular Chemistry, January 2011, Royal Society of Chemistry

    Professor Mark W Peczuh, Professor Challa V Kumar

  26. Attomolar Detection of a Cancer Biomarker Protein in Serum by Surface Plasmon Resonance Using Superparamagnetic Particle Labels

    Article • Angewandte Chemie, December 2010, Wiley

    Professor Challa V Kumar

  27. Attomolar Detection of a Cancer Biomarker Protein in Serum by Surface Plasmon Resonance Using Superparamagnetic Particle Labels

    Article • Angewandte Chemie International Edition, December 2010, Wiley

    Professor Challa V Kumar

  28. Novel, Simple, Versatile and General Synthesis of Nanoparticles Made from Proteins, Nucleic Acids and other Materials

    Article • Journal of Nano Research, December 2010, Trans Tech Publications

    Professor Challa V Kumar

  29. Steady-State and Time-Resolved Studies of the Photocleavage of Lysozyme by Co(III) Complexes

    Article • Langmuir, February 2010, American Chemical Society (ACS)

    Professor Challa V Kumar

  30. Measurement of biomarker proteins for point-of-care early detection and monitoring of cancer

    Article • The Analyst, January 2010, Royal Society of Chemistry

    Professor Challa V Kumar

  31. Molecular Signatures of Enzyme−Solid Interactions: Thermodynamics of Protein Binding to α-Zr(IV) Phosphate Nanoplates

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

    Professor Challa V Kumar

  32. DNA-Based Supramolecular Artificial Light Harvesting Complexes

    Article • Journal of the American Chemical Society, November 2009, American Chemical Society (ACS)

    Professor Challa V Kumar

  33. Protein−Solid Interactions: Important Role of Solvent, Ions, Temperature, and Buffer in Protein Binding to α-Zr(IV) Phosphate

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

    Professor Challa V Kumar

  34. Rational Design of Anthracene-Based DNA Binders

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

    Professor Challa V Kumar

  35. The metallomics approach: use of Fe(ii) and Cu(ii) footprinting to examine metal binding sites on serum albumins

    Article • Metallomics, January 2009, Oxford University Press (OUP)

    Professor Challa V Kumar

  36. Inorganic photochemical protein scissors: photocleavage of lysozyme by Co(III) complexes

    Article • Photochemical & Photobiological Sciences, December 2008, Springer Science + Business Media

    Professor Challa V Kumar

  37. Towards building artificial light harvesting complexes: enhanced singlet-singlet energy transfer between donor and acceptor pairs bound to albumins

    Article • Photochemical & Photobiological Sciences, December 2008, Springer Science + Business Media

    Professor Challa V Kumar

  38. Thermostable Biocatalytic Films of Enzymes and Polylysine on Electrodes and Nanoparticles in Microemulsions

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

    Professor Challa V Kumar

  39. Folding Control and Unfolding Free Energy of Yeast Iso-1-cytochrome c Bound to Layered Zirconium Phosphate Materials Monitored by Surface Plasmon Resonance

    Article • The Journal of Physical Chemistry, July 2008, American Chemical Society (ACS)

    Professor Challa V Kumar

  40. Chiral Protein Scissors Activated by Light: Recognition and Protein Photocleavage by a New Pyrenyl Probe

    Article • The Journal of Physical Chemistry, July 2008, American Chemical Society (ACS)

    Professor Challa V Kumar

  41. Enzyme-inorganic nanoporous materials: Stabilization of proteins intercalated in α-zirconium(IV) phosphate by a denaturant

    Article • Microporous and Mesoporous Materials, April 2008, Elsevier

    Professor Challa V Kumar

  42. Enzyme–inorganic nanoporous materials: Differential scanning calorimetric studies and protein stability

    Article • Microporous and Mesoporous Materials, March 2008, Elsevier

    Professor Challa V Kumar

  43. Thermostable Peroxidase−Polylysine Films for Biocatalysis at 90 °C

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

    Professor Challa V Kumar

  44. Novel enzyme/DNA/inorganic nanomaterials: a new generation of biocatalysts

    Article • Dalton Transactions, January 2007, Royal Society of Chemistry

    Professor Challa V Kumar

  45. Contributions of Hydroxyethyl Groups to the DNA Binding Affinities of Anthracene Probes

    Article • The Journal of Physical Chemistry B, September 2006, American Chemical Society (ACS)

    Professor Alison Rodger, Professor Challa V Kumar

  46. Tuning the Properties of Hb Intercalated in the Galleries of α-ZrP with Ionic Strength:  Improved Structure Retention and Enhanced Activity

    Article • Chemistry of Materials, February 2006, American Chemical Society (ACS)

    Professor Challa V Kumar

  47. Spectroscopic Identification of Binding Modes of Anthracene Probes and DNA Sequence Recognition†

    Article • Photochemistry and Photobiology, January 2006, Wiley

    Professor Alison Rodger, Professor Challa V Kumar

  48. Site-Selective Photocleavage of Proteins by Uranyl Ions

    Article • Angewandte Chemie International Edition, January 2006, Wiley

    Professor Challa V Kumar

  49. Site-Selective Photocleavage of Proteins by Uranyl Ions

    Article • Angewandte Chemie, January 2006, Wiley

    Professor Challa V Kumar

  50. Protein annealing: Thermal treatment of met-hemoglobin bound to α-zirconium phosphate/phosphonates results in initial denaturation followed by recovery of activity and structure

    Article • Microporous and Mesoporous Materials, January 2006, Elsevier

    Professor Challa V Kumar

  51. Tuning the DNA binding modes of an anthracene derivative with salt

    Article • Journal of Photochemistry and Photobiology A Chemistry, January 2006, Elsevier

    Professor Challa V Kumar

  52. Contributions of a Long Side Chain to the Binding Affinity of an Anthracene Derivative to DNA

    Article • The Journal of Physical Chemistry, June 2005, American Chemical Society (ACS)

    Professor Challa V Kumar

  53. Photocleavage of Lysozyme by Cobalt(III) Complexes

    Article • Inorganic Chemistry, February 2005, American Chemical Society (ACS)

    Professor Challa V Kumar

  54. Layered α-Zirconium Phosphates and Phosphonates

    Article • ChemInform, September 2004, Wiley

    Professor Challa V Kumar

  55. Denaturation and Renaturation of Self-Assembled Yeast Iso-1-cytochrome c on Au

    Article • Analytical Chemistry, April 2004, American Chemical Society (ACS)

    Professor Richard N Zare, Professor Challa V Kumar

  56. Layered -Zirconium Phosphates and Phosphonates

    Article • March 2004, Taylor & Francis

    Professor Challa V Kumar

  57. Protein scissors: Photocleavage of proteins at specific locations

    Article • Journal of Chemical Sciences, December 2002, Springer Science + Business Media

    Professor Challa V Kumar

  58. Ultrathin Layered Myoglobin−Polyion Films Functional and Stable at Acidic pH Values

    Article • Journal of the American Chemical Society, October 2002, American Chemical Society (ACS)

    Professor Challa V Kumar

  59. Large chiral discrimination of a molecular probe by bovine serum albumin

    Article • Chemical Communications, January 2001, Royal Society of Chemistry

    Professor Challa V Kumar

  60. Probing the donor and acceptor dye assemblies at the galleries of α-zirconium phosphate

    Article • Microporous and Mesoporous Materials, December 2000, Elsevier

    Professor Challa V Kumar

  61. Photochemical Protein Scissors: Role of Aromatic Residues on the Binding Affinity and Photocleavage Efficiency of Pyrenyl Peptides

    Article • Tetrahedron, September 2000, Elsevier

    Professor Challa V Kumar

  62. Adenine-Thymine Base Pair Recognition by an Anthryl Probe from the DNA Minor Groove

    Article • Tetrahedron, September 2000, Elsevier

    Professor Challa V Kumar

  63. Proteins Immobilized at the Galleries of Layered α-Zirconium Phosphate:  Structure and Activity Studies

    Article • Journal of the American Chemical Society, February 2000, American Chemical Society (ACS)

    Professor Challa V Kumar

  64. Artificial metallopeptidases: regioselective cleavage of lysozyme

    Article • Chemical Communications, January 2000, Royal Society of Chemistry

    Professor Challa V Kumar

  65. Photon antennas: self-assembly of donor and acceptor metal ions at the galleries of layered α-zirconium phosphonates

    Article • Microporous and Mesoporous Materials, November 1999, Elsevier

    Professor Challa V Kumar

  66. Tuning the Selectivity of Protein Photocleavage:  Spectroscopic and Photochemical Studies

    Article • Journal of the American Chemical Society, May 1999, American Chemical Society (ACS)

    Professor Challa V Kumar

  67. Sequence dependent energy transfer from DNA to an anthryl probe: discrimination between GC and IC sequences

    Article • Chemical Communications, January 1999, Royal Society of Chemistry

    Professor Challa V Kumar

  68. A Note From Guest Editors

    Article • Research on Chemical Intermediates, January 1999, Springer Science + Business Media

    Professor Challa V Kumar

  69. Protein cleavage by transition metal complexes bearing amino acid substituents

    Article • Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, September 1998, Elsevier

    Professor Challa V Kumar

  70. Hexamminecobalt(III) chloride assisted, visible light induced, sequence dependent cleavage of DNA

    Article • Journal of Inorganic Biochemistry, November 1997, Elsevier

    Professor Challa V Kumar

  71. Site-Specific Photocleavage of Proteins

    Article • Angewandte Chemie International Edition in English, October 1997, Wiley

    Professor Challa V Kumar

  72. Nanoencapsulation of Cytochrome c and Horseradish Peroxidase at the Galleries of α-Zirconium Phosphate

    Article • Chemistry of Materials, March 1997, American Chemical Society (ACS)

    Professor Challa V Kumar

  73. Supramolecular assemblies of ethidium and acridinium ions at the interlayer regions of α-zirconium phosphate

    Article • Microporous Materials, October 1996, Elsevier

    Professor Challa V Kumar

  74. Supramolecular Assemblies of Tris(2,2'-bipyridine)ruthenium(II) Bound to Hydrophobically Modified .alpha.-Zirconium Phosphate: Photophysical Studies

    Article • The Journal of Physical Chemistry, December 1995, American Chemical Society (ACS)

    Professor Challa V Kumar

  75. Quenching of Tris(2,2'-bipyridine)ruthenium(II) Luminescence by Cobalt(III) Polypyridyl Complexes in Different Sites in and on Clays

    Article • The Journal of Physical Chemistry, June 1995, American Chemical Society (ACS)

    Professor Challa V Kumar

  76. Emission properties of dioxorhenium(V) complexes in aqueous solutions of anionic and nonionic surfactants: a sensitive probe of hydrophobic binding regions

    Article • Journal of the American Chemical Society, June 1989, American Chemical Society (ACS)

    Professor Challa V Kumar

  77. Excited-state resonance Raman spectroscopy as a probe of alumina-sodium dodecyl sulfate hemimicelles

    Article • Langmuir, January 1989, American Chemical Society (ACS)

    Professor Challa V Kumar

  78. Are triplet exciplexes involved in [2 + 2] photocycloaddition of cyclic enones to alkenes?

    Article • Journal of the American Chemical Society, November 1988, American Chemical Society (ACS)

    Professor Challa V Kumar

  79. Spectroscopic investigations of the interaction between polypyridyl-ruthenium complexes and anionic polyelectrolytes

    Article • The Journal of Physical Chemistry, April 1988, American Chemical Society (ACS)

    Professor Challa V Kumar

  80. Energy redistribution and localization in the excited states of ruthenium(II) polypyridyl complexes

    Article • Inorganic Chemistry, February 1988, American Chemical Society (ACS)

    Professor Challa V Kumar

  81. Factors influencing the excited-state behavior of ruthenium(II) complexes adsorbed on aqueous laponite

    Article • Langmuir, November 1987, American Chemical Society (ACS)

    Professor Challa V Kumar

  82. Time-resolved resonance Raman spectra of polypyridyl complexes of ruthenium(II)

    Article • Inorganic Chemistry, May 1987, American Chemical Society (ACS)

    Professor Challa V Kumar

  83. DNA-mediated photoelectron transfer reactions

    Article • Journal of the American Chemical Society, October 1986, American Chemical Society (ACS)

    Professor Challa V Kumar

  84. Binding modes and base specificity of tris(phenanthroline)ruthenium(II) enantiomers with nucleic acids: tuning the stereoselectivity

    Article • Journal of the American Chemical Society, April 1986, American Chemical Society (ACS)

    Professor Challa V Kumar

  85. Steady-state and laser flash photolysis studies of 1-aziridinyl-1,2-dibenzoylalkenes

    Article • The Journal of Organic Chemistry, November 1985, American Chemical Society (ACS)

    Professor Challa V Kumar

  86. Photophysics of ruthenium complexes bound to double helical DNA

    Article • Journal of the American Chemical Society, September 1985, American Chemical Society (ACS)

    Professor Challa V Kumar

  87. Steady-state and laser flash photolysis studies of bridgehead-substituted dibenzobarrelenes

    Article • The Journal of Organic Chemistry, July 1985, American Chemical Society (ACS)

    Professor Challa V Kumar

  88. Laser-flash-photolysis study of aliphatic thioketone triplets. Self-quenching and singlet-oxygen sensitization

    Article • Journal of the Chemical Society Faraday Transactions 2 Molecular and Chemical Physics, January 1985, Royal Society of Chemistry

    Professor Challa V Kumar

  89. Photochemical transformations and laser flash photolysis studies of dibenzobarrelenes containing 1,2-dibenzoylalkene moieties

    Article • The Journal of Organic Chemistry, December 1984, American Chemical Society (ACS)

    Professor Challa V Kumar

  90. Photochemical transformations of 1-pyrazolyl-cis-1,2-dibenzoylalkenes. A laser flash photolysis investigation

    Article • The Journal of Organic Chemistry, November 1984, American Chemical Society (ACS)

    Professor Challa V Kumar

  91. Aromatic thioketone triplets and their quenching behaviour towards oxygen and di-t-butylnitroxy radical. A laser-flash-photolysis study

    Article • Journal of the Chemical Society Faraday Transactions 2 Molecular and Chemical Physics, January 1984, Royal Society of Chemistry

    Professor Challa V Kumar

  92. Triplet-state photophysics of retinal analogues. Interaction of polyene triplets with the di-t-butylnitroxy radical

    Article • Journal of the Chemical Society Faraday Transactions 1 Physical Chemistry in Condensed Phases, January 1984, Royal Society of Chemistry

    Professor Challa V Kumar

  93. Geminate reverse electron transfer in a photogenerated ion-pair. Mechanism of 1,4-dicyanonaphthalene sensitized ylide formation from stilbene oxides

    Article • Journal of the Chemical Society Chemical Communications, January 1984, Royal Society of Chemistry

    Professor Challa V Kumar

  94. Photochemical transformations of cis-1,2-dibenzoylalkenes

    Article • The Journal of Organic Chemistry, September 1980, American Chemical Society (ACS)

    Professor Challa V Kumar