Citation: Wen Ye LI, Ying Li WEI, Wen Ting AN, Shao Min SHUANG, Man Shing WONG. Study on Interaction of L-Tryptophan with p-Sulfonatocalix[4]arene by Spectrofluorometry[J]. Chinese Chemical Letters, ;2006, 17(12): 1592-1594. shu

Study on Interaction of L-Tryptophan with p-Sulfonatocalix[4]arene by Spectrofluorometry

1.
School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006;
2.
Department of Chemistry, Hong Kong Baptist University, Hong Kong

Received Date: 18 September 2006

Fund Project: This work was supported by the National Natural Science Foundation of China (No. 20575038).

The interactions between L-tryptophan(L-Trp) and water-soluble p-sulfonatocalix[4]-arene (SCX4) were investigated by spectrofluorometry. The effect of pH was discussed. The interaction process was estimated from the thermodynamic viewpoint. The SCX4 was found to be able to adjust its conformation to fit the size of L-Trp, and the benzene of L-Trp penetrated into the hydrophobic cavity of SCX4. Meanwhile, the binding mechanism was further elucidated by ¹HNMR and molecular mechanics calculations.
- L-Tryptophan,
- p-sulfonatocalix[4]arene,
- fluorescence
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