CAJ | 학술논문

在催化剂聚氯乙烯-四乙烯五胺负载钯配合物(PVC-TEPA-Pd)的作用下,利用Heck反应,二碘联苯与苯乙烯反应可以得到4,4′-二苯乙烯基联苯.进一步用二碘联苯和二乙烯基苯反应可以成功地将联苯基元引入聚合物主链,得到一种新型的含联苯结构的PPV类共轭聚合物,通过红外光谱对聚合物结构进行了表征,并对聚合物的荧光性能进行了研究,发现其荧光发射光谱峰位于500nm,与4,4′-二苯乙烯基联苯荧光发射光谱峰相比,发生了明显的红移.由于分子结构中存在较大共轭体系,两种物质在多种溶剂中的溶解性均较差.
재최화제취록을희-사을희오알부재파배합물(PVC-TEPA-Pd)적작용하,이용Heck반응,이전련분여분을희반응가이득도4,4′-이분을희기련분.진일보용이전련분화이을희기분반응가이성공지장련분기원인입취합물주련,득도일충신형적함련분결구적PPV류공액취합물,통과홍외광보대취합물결구진행료표정,병대취합물적형광성능진행료연구,발현기형광발사광보봉위우500nm,여4,4′-이분을희기련분형광발사광보봉상비,발생료명현적홍이.유우분자결구중존재교대공액체계,량충물질재다충용제중적용해성균교차.
4,4-disubstituted-styrylbiphenyl was synthesized by Heck reaction of 4.4′-diiondobipheny with divinylbenzene under the catalysis of PVC-TEPA-Pd. Furthermore, a novel conjugated polymer PPV containing biphenyl was obtained via the reaction of 4.4′-diiondobipheny with divinylbenzene in the presence of the same catalyst. The structure of the polymer was characterized by IR spectra. The solid sample of conjugated polymer PPV containing biphenyl showed the fluorescence emission peaks at 500nm. Compared with 4,4-disubstituted-styrylbiphenyl, the fluorescence emission peak of the conjugated polymer shifts to a longer wavelength region. The solubilities of these two substances were poor in variesl solvents because of the high conjugated systems in their molecular structures.