Polydiacetylenes prepared from 2,4-hexadiyne monomers substituted with at least one side chain component, exhibit an absorption maximum wavelength maximum greater than that exhibited by polydiacetylenes formed from 1,6-di-N-carbazolyl 2,4-hexadiyne. Preferably, the polydiacetylenes exhibit an absorption maximum that is in the range of visible light. Examples of suitable side chain components of the polydiacetylenes include cyanovinyl aromatic substituents and quinoid substituents. The polydiacetylenes exhibit useful third order nonlinear optical behavior for electromagnetic radiation in the visible and near-infrared electromagnetic wavelength range and can be formed by thermally-based synthesis methods.
由至少一个侧链组分置换的
2,4-己二炔单体制备的聚二炔烯,其吸收最大波长大于由1,6-二-N-
咔唑基
2,4-己二炔形成的聚二炔烯。最好,聚二炔烯的吸收最大值在可见光范围内。适合作为聚二炔烯的侧链组分的例子包括
氰基
乙烯芳香基取代物和醌基取代物。聚二炔烯对于可见光和近红外电磁波长范围的电磁辐射具有有用的三阶非线性光学行为,并且可以通过热合成方法形成。