Citation: Wen Guang LI, Xiu Qin RUAN, Qing Xiang GUO, You Cheng LIU. Inclusion Complexation of β-CD with Phenothiazine and N-Alkylphenothiazine Derivatives[J]. Chinese Chemical Letters, ;1998, 9(11): 1051-1054. shu

Inclusion Complexation of β-CD with Phenothiazine and N-Alkylphenothiazine Derivatives

1.
Institute of Chemical Metallurgy, Chinese Academy of Sciences, Beijing 100080;
2.
National Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000;
3.
Department of Chemistry, University of Science and Technology of China, Hefei 230026

Received Date: 18 May 1998

Fund Project: This research was supported by the National Natural Science Foundation of China.

Inclusion of β-cyclodextrin (β-CD) with phenothiazine 1 and N-alkylpheno-thiazine derivatives (alkyl=ethyl 2, isobutyl 3 and isopentyl 4) in aqueous solution was studied by means of UV-vis spectroscopy. The association constant K_a values for the inclusion of β-CD with 1,2, 3 and 4 were determined to be 188, 214, 129 and 80 L/mol, respectively. It indicates that the stability of the inclusion complexes is dependent on the structure and the volume of the substituents in the guest compounds.
- β-cyclodextrin,
- inclusion complex,
- phenothiazine derivatives,
- stability
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