Photosensitization of colloidal ZnO semiconductor system with hypocrellin A

摘要：

　　UV-visible spectroscopy and fluorescence quenching measurements have been employed to study electron transfer from excited Hypocrellin A (HA) into the conduction band of a colloidal ZnO semiconductor.The adsorption of HA on the surface of ZnO colloidal particles and the electron transfer process from its singlet excited state to the conduction band of colloidal ZnO semiconductor were examined under experimental conditions.Adsorption of HA onto the surface of colloidal ZnO semiconductor extended its absorption spectrum further into the visible region,the quenching behaviors were observed as the colloidal ZnO semiconductor was added and determined by fluorescence quenching method.

关键词： Hypocrellin A colloidal ZnO semiconductor fluorescence quenching

作者: Xianlan Chen Ziyue Zhang Jucheng Zhang Wei Liu Na Wu Shaoping Feng Wenchang Chen Lashi Yang

作者单位: School of Science, Honghe University; Key Laboratory of Natural Pharamaceutical & Chemical Biology of Yunnan Province Mengzi,Yunnan 661100, P.R.China

会议类型: 国际会议

会议名称: the 2012 International Conference on Frontiers of Nanoscience and Technology(2012年纳米科学与技术国际会议(ICFNST 2012))

会议地点: 香港

会议语种:英文

页码: 168-171

在线出版日期: 2012-07-26（万方平台首次上网日期，不代表论文的发表时间）