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《Journal of Qufu Normal University(Natural Science)》 2010-04
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The Excited State and Spectroscopic Measurement of Singlet Oxygen Quantum Yield Produced by a New-type Photosensitizer Hyporcrellin A

MENG Jing①,GAO Bo-wen①②,WANG Hai-long①(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)  
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.
【Fund】: 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)
【CateGory Index】: R318.51
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