Kuo, Wen-Jang; Hsiue, Ging-Ho; Jeng, Ru-Jong published the artcile< Synthesis and macroscopic second-order nonlinear optical properties of poly(ether imide)s containing a novel two-dimensional carbazole chromophore with nitro acceptors>, Application of C19H34O2, the main research area is carbazole nitrophenyl substituted preparation formylation condensation reaction.
A two-dimensional carbazole chromophore with nitrophenyl group acceptors was synthesized by diformylation of carbazole and Horner-Emmons-Wadsworth condensation with diethyl-(4′-nitrobenzyl)phosphonate. The chromophore showed first mol. hyperpolarizability of 163 × 10-30 esu, as measured using solvatochromic methods. The NLO chromophore was mixed with an organosol. poly(ether imide) 2,2′-bis(4-aminophenyl)biphenyl-4,4′-hexafluoroisopropylidene diphthalic anhydride copolymer (6FPEI) to obtain a series of guest-host NLO materials containing up to 20% chromophore, with no aggregation despite the chromophore content. The compatibility of the NLO chromophore and the poly(ether imide) was studied by SEM and extraction experiments The compatibility is dependent on the mol. weight distribution of the poly(ether-imide). The second harmonic coefficient (d33) for the NLO-active poly(ether imide)s is 7 to 23 pm V-1, depending on doping level. The effect of two-dimensional structure on the NLO chromophore temporal stability was studied by tracing the second harmonic coefficient as a function of time. The relaxation of the NLO systems was further examined by dielec. measurements. Large rotational cone volume provide the two-dimensional chromophore with excellent orientational stability, as the temperature approaches the glass transition temperature
Journal of Materials Chemistry published new progress about Complex modulus, tan δ. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application of C19H34O2.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics