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A series of thermally stable nonlinear optical hyperbranched polyaspartimides were synthesized via the Michael addition reaction of a fluorine-containing trimaleimide, 1,1-tris[4-(4-maleimide-2-trifluoromethyl-phenoxy)-phenyl]ethane and two respective azobenzene dyes, namely bis(4-aminophenyl(4-(4-nitrophenyl)-diazenyl)phenyl)-amine and 2,4-diamino-4′-(4-nitrophenyl-diazenyl)-azobenzene, using p-toluenesulfonic...
Poly(N-acylurea)–clay nanocomposites consisting of a modified montmorillonite and poly(N-acylurea) were prepared from which poly(amide-imide)–clay nanocomposites were subsequently obtained via the sequential self-repetitive reaction of poly(N-acylurea). The moderate T g of poly(N-acylurea) allows the nonlinear optically active polymer to exhibit high poling efficiency; in situ poling and curing...
A series of thermally stable side-chain second-order nonlinear optical (NLO) poly(amide–imide)s via sequential self-repetitive reaction (SSRR) have been developed. This SSRR is based on carbodiimide (CDI) chemistry. Three difunctional azo chromophores (DR19, NDPD and DNDA) were, respectively, reacted with excessive amount of 4,4′-methylene-diphenylisocyanate (MDI) to form poly-CDI, and subsequently...
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