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《Journal of Instrumental Analysis》 2008-12
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Study on Fluorescence Spectral Characteristics of Dialdehyde Konjac Glucomannan Solution

XU Dong-ying1,LI Guang-ji1,HE Xiao-hong2,LIAO Zheng-fu2,CHEN Xu-dong3 (1.College of Material Science and Engineering,South China University of Technology,Guangzhou 510640,China;2.Faculty of Materials and Energy,Guangdong University of Technology,Guangzhou 510006,China;3.School of Chemistry and Chemical Engineering,Sun Yat-sen University,Guangzhou 510275,China)  
In this article,the characteristics of DAKGM fluorescence spectra excited by different wavelengths of ultraviolet light ranging from 220 nm to 320 nm were investigated.The maximum fluorescence peaks were at 425 nm and 465 nm,respectively.The former was attributed to n→ σ* transition of the hetero-atom(O) in the functional group(C—O—C),and the latter was due to n→π* transition of theC=Oin aldehyde group(—CHO).Results showed that the fluorescence characteristics of DAKGM were affected seriously by the excitation wavelength,DAKGM concentration and the solvent type through specific interactions,such as hydrogen bond and space effects.The results obtained can be used to evaluate the interactions between the konjac glucomannan(KGM)hydrogel carrier and the small molecular drugs,as well as the drug controlled release behavior.
【Fund】: 国家自然科学基金资助项目(50673104)
【CateGory Index】: TQ460.1
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