Crystal growth and characterization of 4-[4-(4-dimethylamino-phenyl) buta-1,3-dienyl]-1-methyl pyridinium iodide for higher order non-linear applications

Preparation, Crystal Structure, Physico‐chemical and Nonlinear Optical Properties of a New D‐π‐A Centrosymmetric Stilbazolium Framework of 4‐[2‐(3hydroxy‐phenyl)‐vinyl]‐1‐methyl‐pyridinium iodide (HMPI)

“…The Stilbazolium family salts have strong chromophore number densities and excellent long-term thermodynamic orientation, which make them a prominent third-order NLO material. [15] The first 4-N,N-dimethylamino-4'-N'-methyl-stilbazolium tosylat (DAST) crystal is a perfect example of a Stilbazolium derivative with a predominantly developed crystal. [16] Few examples of a Stilbazolium cation 2-[2-(4-Diethylamino-Phenyl)vinyl]-1-methyl-pyridinium iodide, and 4-{2-[4-(2-disulfide pyridyl-benzyloxy)-phenyl]-vinyl}-1-methyl-pyridinium iodide single crystals develop by the Senthil et al, [17] and Hong Zhang et al [18] The results obtained by modifying the DAST structure indicate that modifying the counter-cation is one of the simplest and most effective strategies for enhancing structural nonlinearity.…”

“…In an outcome, it is reasonable to design and synthesize molecules with increased nonlinear optical characteristics. The Stilbazolium family salts have strong chromophore number densities and excellent long‐term thermodynamic orientation, which make them a prominent third‐order NLO material [15] . The first 4‐N,N‐dimethylamino‐4′‐N’‐methyl‐stilbazolium tosylat (DAST) crystal is a perfect example of a Stilbazolium derivative with a predominantly developed crystal [16] .…”

4-[4-(4-Methoxyphenyl)-1,3-butadienyl]-1-methylpyridinium 4-chlorobenzene sulphonate (MBMPCBS) – an efficient nonlinear optical crystal with superior thermal stability

“…In order to maintain this temperature difference and also to have high nonlinear optical properties equal to or more than that of DAST, we propose to design a molecule with a methoxy functional group as the electron donor and increase the π conjugation length of the chromophore to overcome the problem of thermal stability and NLO properties. 16,29–32…”

“…In order to maintain this temperature difference and also to have high nonlinear optical properties equal to or more than that of DAST, we propose to design a molecule with a methoxy functional group as the electron donor and increase the π conjugation length of the chromophore to overcome the problem of thermal stability and NLO properties. 16,[29][30][31][32] As a result, we attempted to develop 4-[4-(4methoxyphenyl)-1,3-butadienyl]-1-methylpyridinium iodide (MBMPI) and 4-[4-(4-methoxyphenyl)-1,3-butadienyl]-1methylpyridinium 4-chlorobenzene sulphonate (MBMPCBS) chromophores with extended π conjugation and superior thermal properties. The hypothesis of better thermal and NLO characteristics of MBMPCBS is validated by the experimental and theoretical findings.…”

Crystal growth and characterization of Benzimidazolium salicylate single crystal for nonlinear optical studies and antibacterial activity

“…The organic compounds typically have strong coulombic interactions between electron donor and acceptor group in the structure which have significant NLO efficiency [6]. Organic compounds have π-conjugated molecules which can be used in various applications such as organic LEDs, photorefractive devices, photovoltaics and waveguides however organic molecules are of low cost, low weight and flexible in nature [7,8]. Organic NLO crystals have spectacular properties which motivated the researchers to find an alternate for the inorganic crystals due to their high nonlinear response and have good optical damage threshold [9,10].…”