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Citation: Jie Hong-Zhi, Wu Shi-Kang. Inclusion Behavior of Chemical Modified β-cyclodextrin in Alcohol/Water Mixed Solvents[J]. Acta Physico-Chimica Sinica, ;2000, 16(03): 248-252. doi: 10.3866/PKU.WHXB20000311 shu

Inclusion Behavior of Chemical Modified β-cyclodextrin in Alcohol/Water Mixed Solvents

1.
Institute of Phyotographic Chemistry,Chinese Academy of Sciences,Beijing 100101

Received Date: 6 May 1999
Available Online: 15 March 2000

A comparative study on the fluorescence behavior of the chemical modified β-cyclodextrin appended a N,N-dimethylamino-chalcone group (DMAC-CD) and the non-modified β-CD mixed with free dimethylamino-chalcone (DMAC+CD) in alcohol/water mixed solvents have been carried out in this work. The fluorescence data obtained——maximum peak wavelength and emission intensity——indicates that the inclusion behavior of the above-mentioned systems is obviously different in mixed alcohol/water solvents. The solvent-induced multi-component complex formation and dissociation and the effect of polarity and size of alcohol used have been also studied carefully by variation of the fluorescence spectroscopic characters. The result indicates that the self-inclusion complex of DMAC-CD has a higher stability in mixed alcohol/water solvents than that in the DMAC +β-CD system. The obtained results and the observed phenomena have been discussed in details.
- Chemical modified cyclodextrin,
- Inclusion complex,
- Fluorescence spectrum,
- Mixed solvect
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