Synthsis and Photoluminescence Properties of Low-Tg Photorefractive Polymers of Double Founction
QU Yu-feng1,2,3, FANG Yu1, XU Liang4, SUN Lian-lai2,3, YANG Rui-zhuang1, LUO Xuan1, CAO Lin-hong2,3, LIU Hong-jie1, HUANG Jin1, JIANG Xiao-dong1*
1. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China 2. Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology and Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621010, China 3. State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621900, China 4. School of Science, Southwest University of Science and Technology, Mianyang 621900, China
Abstract：A group of low-Tg photorefractive polymers of double function with carbazole and p-nitrodiazencarbazole called P-2, P-3 and P-4 were synthesized by means of different proportional diazonium salts being diazo-coupled with the poly [bis(6-carbazolhexyloxy)] phosphazene(P-1). P-2, P-3 and P-4 were characterized by 31P NMR, 1H NMR, IR, UV-Vis, GPC, TG and DSC. The result showed that P-2, P-3 and P-4 have good heat stability (Td≈300 ℃) and a lower glass transition temperature (Tg≈30~40 ℃). Their fluorescence properties were studied by photoluminescence and the result showed that P-1 has a stronger fluorescence properties and fluorescence intensity. P-2, P-3 and P-4 have varying degrees of quenching after nitro joining. The fluorescence properties were related with numbers of carbazole and nitro and their molecular space structure.
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