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Study on Influence of Cyclodextrins on the Photolysis of Dissolved Anthracene by Fluorescence Spectroscopy
Mu Junze #,Zhang Yong *
The Key Lab. for Mar. Environ. Sci. of MOE of China, Environ. Sci. Res. Center, Xiamen University
*Correspondence author
#Submitted by
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Funding: none
Opened online:19 February 2004
Accepted by: none
Citation: Mu Junze,Zhang Yong.Study on Influence of Cyclodextrins on the Photolysis of Dissolved Anthracene by Fluorescence Spectroscopy[OL]. [19 February 2004] http://en.paper.edu.cn/en_releasepaper/content/299
 
 
In this paper, a simple, fast and effective fluorescent method for studying the photolysis of dissolved anthracene (An) in cyclodextrins (CDs) aqueous solutions was developed. With this method the influences of five kinds of CDs on the photolysis of dissolved An were investigated. It was found that all five CDs have promotive effects on the photolysis of An. It was due to the incorporation of An into the CDs cavities which inhibited self-quenching of triplet-state An and prolonged the lifetime of singlet-state An. These enhanced the possibility of attack of oxygen to An and more singlet-state oxygens were produced. The effects of cavity sizes and steric hindrance of substituents of CDs on photolysis of An were explored. The order of capacity for promotion of various CDs was as follows：hydroxypropyl-β-CD （HPCD）> heptakis(2,6-di-O-methyl)-β-CD (DMCD)>β-CD>γ-CD>α-CD.
Keywords:fluorescence spectroscopy；cyclodextrins；dissolved anthracene；photolysis
 
 
 

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