无溶剂热致转型制备多晶型无金属酞菁光导材料及性能研究

摘要

研究了一种新型无溶剂法进行晶型转化以获得具有良好光敏性能的α及β型无金属酞菁（H₂Pc）的方法。以1,3-二亚氨基异吲哚啉缩合成环得到H₂Pc，经酸糊提纯后得到低结晶度的α-H₂Pc。通过对其热致转型温度的研究发现，190 ℃下保温2 h可以得到结晶度为100% 的α-H₂Pc，而在高于275 ℃的温度下保温2 h则可以获得结晶度为95.04% 的β-H₂Pc。对制备的2种晶型的H₂Pc的形貌进行了表征，可以观测到H₂Pc逐渐由不规则片层状结构生长为棒状结构。将其作为电荷产生材料制备有机光导体器件测试其光导性能，α-H₂Pc可获得0.609 μJ·cm^-2的光敏性而β-H₂Pc可获得0.420 μJ·cm^-2的光敏性。结果表明，建立的H₂Pc的晶型转化方法具有简便、环境友好、可连续制备α和β 2种晶型产物，且光导性能优良的特点，可广泛应用于中高速激光有机光导体的制备。

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	浦冰叶
	李祥高
	王世荣
	肖殷
	李战强
	陈禹夫

关键词：热诱导；晶型转化；无溶剂；光导性；无金属酞菁

Abstract：

In this paper, a new solvent-free crystal phase transformation approach for fabrication of α- and β-form metal-free phthalocyanine(H₂Pc) with good performance is reported. The cyclic condensation of 1,3-diiminoisoindoline is used to fabricate H₂Pc powder, which appears α-form with low crystallinity after purification paste. According to the effect of annealing temperature on the thermal phase transformation process, α-H₂Pc with 100% crystallinity at 190 ℃ for 2 h is obtained. And β-H₂Pc with 95.04% crystallinity could be also obtained at 280 ℃ for 2 h. The morphology of H₂Pc obtained in different conditions is studied, which is changed from irregular sheet structure to rodlike structure. Laser organic photoconductors doped H₂Pc as the charge generation material are also prepared to detect the photoelectric performance. The α-H₂Pc and β-H₂Pc present the good photosensitivity with 0.609 and 0.420 μJ·cm^-2, respectively. As a result, this new crystal phase transformation approach for H₂Pc is simple and environmental friendly. Here, α-H₂Pc and β-H₂Pc with good photoconductive properties could be obtained continuously, which could be widely used in high speed laser organic photoconductor.

Keywords： thermal-induction； crystal phase transitions； solvent-free； photoconductivity； metal-free phthalocyanine

Received 2015-04-13;

Fund:

国家863项目（2012AA030307）；国家自然基金（21176180）；天津科技支持计划（13ZCZDGX0090）。

Corresponding Authors: 李祥高,E-mail:lixianggao@tju.edu.cn。 Email: lixianggao@tju.edu.cn

About author: 浦冰叶(1990-),女,硕士研究生,主要研究酞菁类化合物的转型方法及其光导性能。

引用本文:

浦冰叶, 李祥高, 王世荣, 肖殷, 李战强, 陈禹夫.无溶剂热致转型制备多晶型无金属酞菁光导材料及性能研究[J]. 化学工业与工程, 2017,34(3): 1-7

Pu Bingye, Li Xianggao, Wang Shirong, Xiao Yin, Li Zhanqiang, Chen Yufu.A New Solvent-Free Preparation Approach for Polymouphous Metal-Free Phthalocyanine Photoconductive Materials and Their Performances[J]. Chemcial Industry and Engineering, 2017,34(3): 1-7

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