Tetrahedron

Syntheses of four new pyridinium phenolates with caged phenolate functionalities as chromophores for quadratic optics

E Ay, H Chaumeil, A Barsella

Index: Ay, Emel; Chaumeil, Helne; Barsella, Alberto Tetrahedron, 2012 , vol. 68, # 2 p. 628 - 635

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Citation Number: 6

Abstract

Semi-empirical calculations as well as our preliminary studies indicate an increase of the nonlinear response of pyridinium phenolates with the raise of their interplanar angle. Unfortunately, the tendency of previously synthesized zwitterionic compounds to form aggregates prevents their use in electro-optical devices. In order to understand the process of aggregation and to circumvent it, the syntheses of new pyridinium phenolates bearing ...