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

Abstract

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.

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

“…The wide transparency ranges from visible The Journal of Physical Chemistry C to near-infrared are an interesting feature of the NSPI crystal, which means that it is suitable for the production of optical gadgets. Although the NSPI crystal shows a wavelength cutoff around 428 nm, it is still better than the other stilbazolium derivatives 25,31,34 listed in Table 3.…”

“…Some organic compounds that are considered nonlinear, such as D-π-A-type substituted stilbazolium derivatives, are very smart optical candidates for generating THz waves and for electro-optic and photonic applications, as they provide second- and third-order NLO responses. − Nonlinearity occurs due to strong Coulombic interactions, high chromophore density, orientation of long-term stability, and strength of donor and acceptor groups with delocalized π-electrons that can enhance asymmetric polarization. , Stilbazolium cations (chromophores) are a major source for nonlinearity, and the variation of the counterions of these salts proved to be an effective strategy for the development of materials with macroscopic high nonlinearity based on Coulomb interactions. − Using this approach, many stilbazolium derivatives with large optical nonlinearities have been extensively explored by many research teams, such as DAST (4- N , N -dimethylamino-4′- N ′-methyl-stilbazolium tosylate), DSNS (4- N , N -dimethylamino-4′- N ′-methyl-stilbazolium 2-naphthalenesulfonate), and so on. Moreover, in recent times, efficient third-order NLO efficiency of stilbazolium derivatives with increasing significance of ICT between the donor and acceptor has been engineered. − Therefore, new NLO materials are to be sought in the stilbazolium family so that they can be utilized effectively for optical applications.…”

Theoretical study of substituent effects on electride characteristics and the nonlinear optical properties of Li@calix[4]pyrrole

“…During the past few decades, nonlinear optic (NLO) materials have made rapid progress in terms of both theoretical research and experimentation and have become an important component in the elds of optics and electricity. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] With the research, design and improvement of new nonlinear optical materials, various methods for increasing nonlinear optical responses have been proposed. [21][22][23][24][25][26][27][28][29][30][31] Electrides are a novel kind of ionic compound in which electrons serve as the anions.…”

Growth and Characterization of N-Methylurea Oxalic (Nmuo) Acid Single Crystal

“…[18][19][20] . Primary amine of N-H stretching vibrations of N-methyl urea was observed at 3454, 3371 and 3369 cm -1 in FTIR and FT-Raman respectively [21][22][23] . Thus, FTIR spectra confirmed the presence of various representative functional groups in NMUO crystal.…”