合成了三种含有四苯基乙烯结构的双炔烃.这些双炔烃单体通过在CuCl催化下在邻二氯苯中进行的均聚反应可以高产率地生成线型聚炔.所得聚合物均可很好地溶解于常见有机溶剂中,并具有很高的热稳定性.这类聚炔材料在溶液态时几乎不发光,但在聚集态或者固态下可高度发光,表现出典型的聚集诱导发光性质.同时,这些聚合物具有高透光性,可以允许整个可见光区的光透过.其薄膜在4001700nm宽波长范围内表现出高折射率(n=1.7787-1.6543)和低色差(D'=0.0003).紫外光照射可诱使聚合物薄膜发生交联过程,从而调控其折射率数值,并可生成高分辨率的荧光图案.
Tetraphenylethene-containing diacetylenes are synthesized and their homopolymerizations are catalyzed by CuCl in o-dichlorobenzene, furnishing linear polyynes in high isolated yields. All polymers possess good solubility in common organic solvents and enjoy high thermal stability. Whereas they are practically non-emissive when molecularly dissolved in good solvents, they become highly emissive when aggregated as nanoparticle suspensions in poor solvents or fabricated into thin films in the solid state, demonstrating a novel phenomenon of aggregation-induced emission. The polymers are highly transparent, allowing almost all light in the entire visible spectral region to transmit through. Thin films of the polymers show high refractive indices (n= 1.7787- 1.6543) in the wavelength region of 400- 1700 nm and very low chromatic aberrations (D'=0.0003). Their n values can be modulated and their thin films can be crosslinked by UV irradiation, generating fluores- cent patterns with high resolutions.