Polymer ( IF 4.6 ) Pub Date : 2018-01-09 , DOI: 10.1016/j.polymer.2018.01.028 Jisha J. Pillai , Anshad Abbas , Sona Narayanan , K. Sreekumar , C. Sudha Kartha , Rani Joseph
In this paper, we report the study of a novel p-aminoazobenzene based non-conjugated, benzoxazine polymer, poly([4-(6-tert-butyl-4H-benzo[e][1,3]oxazin-3-yl)phenyl]-phenyldiazene) (AZO-PBZ) synthesized using solvent free, thermally activated cationic ring opening polymerization. The thermal, photophysical, electrochemical, and photoconducting properties of the polymer were investigated. The optical absorption band edges of AZO-PBZ thin film was observed at 555 nm. Photoinduced charge transfer nature of AZO-PBZ was studied by analyzing the fluorescence spectra and performing photoconductivity experiments. Incorporation of [6, 6]-phenyl-C61-butyric acid methyl ester denoted as PCBM into the polymer leads to quenching of the fluorescent intensity and exhibits significant photoconductivity. The photocurrent through the PCBM blend films was measured as a function of electric field to recognize the field dependence on carrier generation. Internal photocurrent efficiency of the polymer:PCBM blend samples was found to be in the order of 10−5 and photoconductive sensitivity was of the order of 10−11 S W−1cm, which is adequate for photorefractivity.
中文翻译:
对氨基偶氮苯非共轭聚苯并恶嗪体系光电导性的合成与实验研究
在本文中,我们报告了一种新型的基于对氨基苯偶氮的非共轭苯并恶嗪聚合物,聚[[4-(6-叔丁基-4 H-苯并[e] [1,3]恶嗪-3- (1)苯基]-苯基二氮烯)(AZO-PBZ)是使用无溶剂的热活化阳离子开环聚合反应合成的。研究了聚合物的热,光物理,电化学和光电导性能。在555nm处观察到AZO-PBZ薄膜的光吸收带边缘。通过分析荧光光谱并进行光电导实验,研究了AZO-PBZ的光诱导电荷转移性质。掺入[6,6]-苯基-C 61在聚合物中以PCBM表示的-丁酸甲酯导致荧光强度的猝灭并表现出显着的光电导性。测量通过PCBM共混膜的光电流与电场的关系,以识别电场对载流子的依赖性。发现聚合物:PCBM共混物样品的内部光电流效率为10 -5的量级,并且光导灵敏度为10 -11 SW -1 cm的量级,这对于光反射率是足够的。