有机光导材料Y-TiOPc的制备及其性能表征

文中采用溶剂调节法制备了有机光导材料Y-TiOPc。采用邻二氯苯、氯苯、1,2二氯乙烷以及二氯甲烷四种晶型调节剂对TiOPc粗品进行转型。产物经XRD和光导性能分析，证明经过上述四种晶型调节剂处理均可以得到纯度较高的Y-TiOPc。其中以邻二氯苯转型后的产物光导性能最佳，其饱和电位为538V，暗衰速度为56V/s，残余电位为48V，半衰曝光量为0.4524lx·s，具有良好的静电照相性能。XPS测试结果表明，以邻二氯苯为晶型调节剂所得Y-TiOPc中N_1s和O_1s结合能增大，而Ti_2p结合能减小。说明在晶型转化过程中发生电荷转移，从而有利于其光导性能的提高。

Preparation and characterization of organic photoconductive material Y-TiOPc

Organic photoconductive materials Y-TiOPc were prepared by a solvent treatment method. TiOPc raw materials were transformed into Y-TiOPc by using crystal structure adjusting agents of 1,2-dichlorobenzene, chlorobenzene, 1,2-chloroethane and dichloromethane. Characterization of the products by XRD and photoconductivity indicated that Y-TiOPc with high purities could be obtained by these four crystal structure adjusting agents. Y-TiOPc obtained by employing 1,2-dichlorobenzene as the adjusting agent had the best photoconductivity, with the saturation potentials of 538V, dark decay speed of 56V/s, remnant potentials of 48V and the half decay exposures of 0.4524lx·s, exhibiting an excellent xerographic performance. XPS analyses showed that binding energies of N_1s and O_1s increased, while binding energies of Ti_2pdecreased in Y-TiOPc obtained by employing 1,2-dichlorobenzene as the adjusting agent. These results suggested that the charge transfer occurred during the crystal transformation, which enhanced the photoconductivity of Y-TiOPc. 