两亲性卟啉－紫精化合物LB膜的光电性质

PREPARATION AND PHOTOELECTRIC PROPERTIES OF PORPHYRINE-VIOLOGEN LANGMUIR-BLODGETT FILMS

两亲性卟啉－紫精化合物具有分子内光电子转移体系．用ＬＢ膜技术在透明导电玻璃基片上制备成分子排列规则的超薄膜材料，并用两种光电池（导电玻璃／ＬＢ膜／Ｉ３，Ｉ－／导电玻璃，导电玻璃／ＬＢ膜／Ｈｇ探针）测量了ＬＢ膜的光量子产率和光电开关性能．作为分子光电二极管，其最大光量子产率为３．１７×１０－６，光电开关的响应起始时间和驰豫时间分别约为０．２和０．３ｓ，并具有较好的光电响应寿命．

The LB films of a novel amphiphilic porphyrin-violgen which has intramolecular photoelectron transfer system were deposited on transparent electroconductive glass slids by LB films method, their photoelectric on-off properties and light photon yields were measured by two photochemical cells: SnO2/LB films/, I-/SnO2 and SnO2/LB films/Hg. As photoeleCtric diod, its maximum light quantum photon yield is 3. 17 ×10-6, response time and delayed time are 0. 2 and 0. 3 second respectively and has good photoeletric response life time.