Synthesis, growth and characterization of a long-chain π-conjugation based methoxy chalcone derivative single crystal; a third order nonlinear optical material for optical limiting applications

  • P.P. Vinaya, A.N. Prabhu, K. Subrahmanya Bhat, V. Upadhyaya
  • Optical Materials, March 2019, Elsevier
  • DOI: 10.1016/j.optmat.2019.01.061

Chalcones as NLO and optical limiting materials....

What is it about?

Organic material (chalcone derivative 4-[(1E)-3-(4-methoxyphenyl)-3-oxoprop-1-en-1-yl]phenyl 4-methyl benzene-1-sulfonate {4MPMS}) has been grown by solvent evaporation technique. The structural properties have been carried out by powder XRD and single crystal XRD data. The linear optical properties (band gap, extinction co-efficient, optical conductivity and complex dielectric constant) were studied by UV-VIS-NIR spectrometer. In addition, defect states were identified and analyzed by creation of color center mechanism using photoluminescence spectroscopy. In Thermal analysis, crystal (4MPMS) is found to be stable up to 158 °C. Hence it may be used for the fabrication of device below the melting point. The electrical properties have been carried out. The electronic polarizability is the major contribution for the high frequency dielectric constant values. Therefore, using theoretical aspects, the electronic polarizability values were calculated using Clausius–Mossotti relation as well as band structure approach of Penn model. Laser damage threshold for 4MPMS crystal was determined by using Nd:YAG laser with 532 nm. The nonlinear optical absorption coefficient and third order nonlinear optical susceptibility ( (3) ) values are reasonably larger than those of the other chalcone derivative crystals. High second order molecular hyperpolarizability enhances the third order optical nonlinear efficiency. Increased (3) and coupling factor (less than 1/3) indicates that the optical nonlinearity is electronic in origin. The behavior of nonlinear optical absorption curve confirms that the mechanism belongs to reverse saturable absorption (RSA).

Why is it important?

These chalcone derivative are important as they can be further derivatized to obtain novel molecules. Tosyl group can be replaced by several nucleophiles. Cited: 06 times (as on 13/11/2019).


Dr Subrahmanya Bhat K
Manipal Institute Of Technology, Manipal Academy of Higher Education

Chalcones are relatively simple to synthesize and characterize. The preparation procedure is scalable to larger quantities. They possess any property from antimicrobial to anticancer, from optical properties to as corrosion inhibitors. Our related publications: (i) A. N. Prabhu, A Jayarama, V Upadhyaya and K Subrahmanya Bhat, Synthesis, growth and characterization of pi conjugated organic nonlinear optical chalcone derivative, Mat Chem Phy, Vol 138, pp. 179-185, 2013. (ii) A. N. Prabhu, A Jayarama, K Subrahmanya Bhat, and V Upadhyaya, Growth, characterization and structural investigation of a novel nonlinear optical crystal, J Mol Str., Vol.1031, pp. 79-84, 2013. (iii) S. R. Prabhu, A. Jayarama, V. Upadhyaya, K. Subrahmanya Bhat, S. W. Ng, Structure and characterization of a novel chalcone crystal having nitro as an acceptor group, Mol. Cryst. Liq. Cryst., Vol 607, 200-214, 2015. (iv) Shubhalaxmi, Barbara Geidner, C. S. Chidan Kumar, Hoong-Kun Fun and K Subrahmanya Bhat, Synthesis and crystal structure studies of novel 4-tosyloxychalcone derivative, Mol. Cryst. Liq. Cryst., 623, 365-371, 2015. (v) A. N. Prabhu, V. Upadhyaya, A. Jayarama, K. Subrahmanya Bhat, Third order NLO property of thienyl chalcone derivative: Physicochemical analysis and crystal structure determination, Mol. Cryst. Liq. Cryst., 637, 76-86, 2016. (vi) H. Lgaz, K. S. Bhat, R. Salghi, Shubhalaxmi, S. Jodeh, M. Algarra, B. Hammouti, A. Essamri, Insights into corrosion inhibition behavior of three chalcone derivatives for mild steel in hydrochloric acid solution, J. Mol. Liq, Vol 238, 71-83, 2017. (vii) P.P Vinaya, A.N. Prabhu, K. Subrahmanya Bhat, V. Upadhyaya, Design, Growth and characterization of D-π-A-π-D based efficient nonlinear optical single crystal for optical device applications, J. Phy. Chem. Solids, 123, 300-310, 2018.

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The following have contributed to this page: Dr Subrahmanya Bhat K and Vinay Parol