Kukkonen, Esa; Lahtinen, Elmeri; Myllyperkio, Pasi; Haukka, Matti; Konu, Jari published the artcile< Nonlinear optical properties of diaromatic stilbene, butadiene and thiophene derivatives>, Product Details of C19H34O2, the main research area is diarom stilbene butadiene thiophene synthesis nonliner optical property; mol crystal structure.
Series of highly polar stilbene, diphenylbutadiene and phenylethenylthiophene derivatives were prepared via Horner-Wadsworth-Emmons method with a view to produce new and efficient materials for second harmonic generation (SHG) in the solid-state. The single-crystal X-ray structures of compounds reveal extensive polymorphism and a peculiar photodimerization of the 2-chloro-3,4-dimethoxy-4′-nitrostilbene derivative to afford two polymorphs of tetra-aryl cyclobutane. The stilbene congeners 2-chloro-3,4-dimethoxy-4′-nitrostilbene, 5-bromo-2-hydroxy-3-nitro-4′-nitrostilbene and 4-dimethylamino-4′-nitrostilbene, as well as 4′-fluoro-4”-nitro-1,4-diphenyl-1,3-butadiene present the ideal, non-centrosym. arrangement of the chromophores for nonlinear optical (NLO) activity. Compounds I and II exhibit only relatively low intensity for second harmonic generation (0.04 and 0.18 times that of urea reference, resp.), while the stilbene polymorph 1a·non-centro shows NLO activity of over 32 times that of urea. In addition, the conjugated diarom. compounds 1-3 display fluorescence behavior in CH2Cl2 solutions with the exception of stilbene derivative I.
New Journal of Chemistry published new progress about Absorption spectroscopy. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Product Details of C19H34O2.
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