Ju-Yeon Lee

TL;DR: In this article, 2,4-Di-2,2′-hydroxyethoxy)benzylidenemalononitrile group as a nonlinear optical (NLO) chromophore, which constitutes a part of the polymer backbone.

TL;DR: In this article, a polyurethane (3-5) containing the nonlinear optical (NLO)-chromo-phores 2,3-dioxynitrostilbenyl groups, which constitute parts of the polymer backbones, was obtained.

TL;DR: In this article, 3,4-Di-(2′-hydroxyethoxy)-4′-nitrostilbene (2) was prepared by the reaction of 2-iodoethanol with 3, 4-dihydroxy-4, 4−nibene as a non-linear optical (NLO)-chromophore.

TL;DR: In this paper, 3,4-Di-(2′-hydroxyethoxy)-4′-nitrostilbene was prepared and condensed with terephthaloyl chloride, adipoyl and sebacoyly chloride to yield novel Y-type polyesters containing NLO-chromophore dioxynitrostilbenyl groups, which constituted parts of the polymer backbone.

TL;DR: In this paper, 2,3-Di-(2′-hydroxyethoxy)benzylidenemalononitrile (3) was prepared and condensed with 2,4-toluenediisocyanate and 3,3′-dimethoxy-4,4′-biphenylenediiscyanate to yield novel Y-type polyurethanes 4−5 containing 2, 3-dioxy benzylidenenemalonitrile group as a nonlinear optical (NLO)-chromophore,