Kalainathan S

Department of Physics

School of Advanced Sciences

Vellore Campus

Nivetha K

Yamada M

Kondo Y

Hamada F.

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Journal of Materials Science: Materials in Electronics

In this research work, a new extended π-conjugated chromophore of 4-[4-(4-dimethylamino-phenyl) buta-1,3-dienyl]-1-methyl pyridinium p-styrenesulfonate (DCSSS) is synthesized. The present work demonstrates that 4-[4-(4-dimethylamino-phenyl) buta-1,3-dienyl]-1-methyl pyridiniump-styrene sulfonate hydrate (DCSSS·H2O) crystallizes with centrosymmetric space group (P1¯). The asymmetric structure comprises of 4-((1E,3E)-4-(4-(dimethylamino)phenyl)buta-1,3-dien-1-yl)-1-methylpyridinium cation (C18H21N2 +), 4-vinylbenzenesulfonate (C8H7O3S−) anion and a water molecule. The crystal structure is stabilized by C–H⋯O, O–H⋯O, O–H⋯S types of H-bonding interactions along with π–π stacking interaction and C–H···π interactions. In DCSSS, the anion, cation and water molecule are connected by four Owater–H···Owater and Ccation–H···Osulfonate hydrogen bonds, generating R6 6 (18) graph-set notation. This ring motif is sandwiched between two another R4 4 (12) ring motif, which are generated by four O–H⋯O bonds between anion, cation and water molecules, forming laddar lying parallel to the ab plane. The material was characterized by single crystal XRD method, CHN, NMR, FTIR, FT-Raman, TG-DSC and UV-Vis and luminescence studies. To the best of author's knowledge, all these characterizations were made for the first time. We have also emphasized the role of hydrogen bonding on molecular packing to obtain perfectly aligned cations. Third harmonic generation efficiency of the compound is measured by Z-scan technique with continuous wave semiconductor laser of wavelength 532 nm to realize the nonlinear optical properties DCSSS molecule. © 2019 Elsevier B.V.

Journal of Molecular Structure

Synthesis, growth, crystal structure, thermal, linear and nonlinear opticalanalysis of new extended π-conjugated organic material based on methyl pyridinium compound of 4-(4-(4-(dimethylamino) phenyl)buta-1,3-dienyl)-1-methylpyridinium p-styrenesulfonate hydrate

Optics & Laser Technology

Novel report on SHG efficiency, Z-scan, laser damage threshold, photoluminescence, dielectric and surface microscopic studies of hybrid inorganic ammonium zinc sulphate hydrate single crystal

The Journal of Physical Chemistry C

A New Nonlinear Optical Stilbazolium Family Crystal of (E)-1-Ethyl-2-(4-nitrostyryl) Pyridin-1-ium Iodide: Synthesis, Crystal Structure, and Its Third-Order Nonlinear Optical Properties

Organic single crystals of new stilbazolium derivative, (E)-4-(3-ethoxy-2-hydroxystyryl)-1-methyl pyridinium iodide (3ETSI), was grown by slow evaporation technique. Single crystal X-ray diffraction study revealed that 3ETSI crystallizes in monoclinic crystal system with centrosymmetric space group P21/c. The characteristic functional groups of the grown crystal were identified by FT-IR spectral studies. The 1H NMR spectral studies further confirm the molecular structure of the grown crystal. The thermal behaviour of 3ETSI crystal was studied by TG/DSC analysis. The grown crystal was found to be transparent in the region between 471 and 800 nm as indicated by the UV–visible spectral studies. Photoluminescence spectrum of 3ETSI crystal shows broad green emission peak at 529 nm. The mechanical strength of the grown crystal was estimated by Vickers microhardness tester. The laser damage threshold of 3ETSI crystal was found to be 2.5 GW/cm2 using Nd: YAG laser (1064 nm). Etching studies enunciate the two-dimensional (2D) layer growth mechanisms in the grown crystal. The third-order nonlinear optical properties including nonlinear refractive index (n2), nonlinear absorption coefficient (β), and third-order nonlinear optical susceptibility (χ(3)) of 3ETSI crystal were investigated by the Z-scan technique using continuous wave (CW) He-Ne laser at 632.8 nm. © 2017, Springer Science+Business Media New York.

Synthesis, growth, crystal structure and characterization of new stilbazolium derivative single crystal: (E)-4-(3-ethoxy-2-hydroxystyryl)-1-methyl pyridinium iodide (3ETSI)

The organic third-order non-linear optical crystal HSPI, a new derivative of the stilbazolium family, was successfully synthesized and the optical quality single crystal was grown by a slow evaporation technique for the first time.

RSC Advances

Investigation on the growth, structural, HOMO–LUMO and optical studies of 1-ethyl-2-[2-(4-hydroxy-phenyl)-vinyl]-pyridinium iodide (HSPI) – a new stilbazolium derivative for third-order NLO applications

Optical Materials

Synthesis, growth, structural and HOMO and LUMO, MEP analysis of a new stilbazolium derivative crystal: A enhanced third-order NLO properties with a high laser-induced damage threshold for NLO applications

The search for organic crystals with highly efficient nonlinear optical (NLO) properties with a high surface laser damage threshold (LDT) has become more of a demand in the frontier areas of optical switching and communications applications.

Bulk crystal growth and nonlinear optical characterization of a stilbazolium derivative crystal: 4-[2-(3,4-dimethoxyphenyl)ethenyl]-l methylpyridinium tetraphenylborate (DSTPB) for NLO device fabrication

A new organic stilbazolium derivative crystal 2-[2-(3-hydroxy-4-methoxy-phenyl)-vinyl]-1-methyl-pyridinium naphthalene-2-sulfonate dehydrate (C25H23NO5S·2H2O) (VSNS) was synthesized successfully.

RSC Adv.

Investigation of synthesis, crystal structure and third-order NLO properties of a new stilbazolium derivative crystal: a promising material for nonlinear optical devices

Journal of Physics and Chemistry of Solids

Thermal, optical, mechanical and dielectric properties of nonlinear optical crystal 4-methoxy benzaldehyde-N-methyl 4-stilbazolium tosylate

Synthesis, growth, and characterization of new stilbazolium derivative single crystal: 2-[2-(2,4-dimethoxy-phenyl)-vinyl]-1-ethyl-pyridinium iodide for third-order NLO applications

Journal	Data powered by TypesetJournal of Materials Science: Materials in Electronics
Publisher	Data powered by TypesetSpringer Science and Business Media LLC
ISSN	0957-4522
Open Access	0