Design, Synthesis and Evaluation of Organic Non-linear Optical Chromophores with Configurationally and Conformationally Locked Polyene Bridges

摘要

A modular, synthetic scheme was developed for versatile variation of donors, acceptors and polyene bridge length of NLO-chromophores. Configurational- and conformational rigidity of the polyene bridges were realized by making each set of adjacent double and single bond pair part of a fused cylohexene ring. Substituent effects on the reactions leading to the establishment of the donor, elongation of the fused polyene bridge and the final introduction of the acceptor moiety were uncovered and used to control regioselectivity, chemo-selectivity and reactivity in the overall synthetic scheme.