Synthesis and Study of Gumulefle-Contalnlng Polymers w!ih Flexible Blocks In the Main Chain

摘要

The development of highly active third-order nonlinear optical (NLO) materials is critical in the design of optical devices tor optical communication.1 firmer has reported the synthesis and second-order nonlinear optical activity oi n series of polar cumuknes.7'3 Prasad has reported the first experimental determination of third-order nonlinear optical response of some cumulenes.'1 Recently, we have reported the first synthesis ami study of cumulene-contaimng conjugated polymers as third-order nonlinear optical materials,3 Incorporating flexible blocks into the polymer main chain is a common strategy to improve the solubility and processabilicy of polymers containing rigid segments." Here, we report the synthesis and study of alternative copolymers containing cumulenu segments and flexible blocks in the polymer main chain.