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新型光敏剂HA的激发光物理特性与敏化单态氧测量系统 预览

The Excited State and Spectroscopic Measurement of Singlet Oxygen Quantum Yield Produced by a New-type Photosensitizer Hyporcrellin A
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摘要 为了进一步揭示HA(hypocrellinA)的激发态能级结构和物理机制,我们采用了强激光激发的方法进行了实验验证.结果表明利用HA的强激发辐射效应从一个侧面证实了ESIPT的存在,对于HA分子需要双光子吸收才能实现ESIPT过程.在此基础上建立了一种新的测量HA单态氧荧光光谱和量子产率的方法,定量测定了HA光敏剂敏化单态氧的量子产率.结果表明:测定单态氧在1270nm的荧光光谱,是在红外区精确测量HA敏化单态氧量子产率的直观方法. To reveal the physical mechanism of HA in the excite state,using laser excitation method to conducts the theoretical analysis and experimental validation,we study relative properties of HA′s excited state and prove a new proof for ESIPT;we draw a conclusion that HA′s ESIPT results from double photons absorption.Furthermore,the equipment of measuring fluorescence spectrum in near infrared and quantum yield for singlet molecule oxygen produced by photosensitization is developed.The emission spectra from singlet molecule oxygen in the excited state,1g,photosensitized by HA in organic solvents are obtained on the system.the spectroscopic technology for measuring singlet oxygen fluorescence in near about 1270 nm is a reliable method for measurement of quantum yield of singlet oxygen.
作者 孟婧 高博文 王海龙 MENG Jing,GAO Bo-wen,WANG Hai-long(①College of Physics and Engineering,Qufu Normal University;②Key Laboratory of Polarized Laser and Information Technology,Laser Institute of Qufu Normal University,273165,Qufu,Shandong,PRC)
出处 《曲阜师范大学学报:自然科学版》 CAS 2010年第4期 70-72,76,共4页 Journal of Qufu Normal University(Natural Science)
基金 山东省自然科学基金项目(ZR2009GL010) 曲阜师范大学科研基金资助校级项目(XJ0731 XJZ200812)
关键词 光谱学 竹红菌甲素 激发态质子转移 单态氧 量子产率 PDT Spectroscopy Hyporcrellin A ESIPT singlet oxygen quantum yield photodynamic therapy (PDT)
作者简介 盂婧,女,1983-,硕士研究生;研究方向:信息材料与光通信器件与技术.E-mail:mmmjjjcg@163.com. 王海龙,男,1971-,博士,教授;研究方向:光通信与培子通信.E-mail:phyhtwang71@126.com.
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