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Citation: HUANG Jiu-Zhong, QIU Jun, YANG Chang-Ying. Effects of Rare Earth Polyoxometalates on Optical Properties of Crystal Violet[J]. Chinese Journal of Applied Chemistry, ;2008, 25(3): 266-269. shu

Effects of Rare Earth Polyoxometalates on Optical Properties of Crystal Violet

1.
College of Chemistry and Life Science, Three Gorges University, Yichang 443002

Corresponding author: YANG Chang-Ying,
Received Date: 18 April 2007
Available Online: 30 August 2007
Fund Project: 国家自然科学基金(30570015) (30570015)宜昌市科技攻关计划(A032081)资助项目 (A032081)

The spectral properties of rare earth polyoxometalate(POM)-Crystal Violet(CV) systems were studied by absorption spectra and synchronous fluorescence in B-R buffer at pH=4.1.The addition of POM decreased the absorbance of CV at 590 nm with the appearance of a new band at 655 nm,which indicated the formation of POM-CV complex.Synchronous fluorescence showed that the addition of POM could enhance the fluorescence intensity of CV,which was explained in terms of the hindrance of the formation of the non-fluorescent twisted intramolecular charge transfer(TICT) states of CV by the assembled POM-CV system,and the surfactant CTAB could enhance the luminescence by coordinated assembly.
- Crystal Violet (CV),
- Rare earth polyoxometalate (POM),
- absorption,
- synchronous fluorescence
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