Molecular Recognition of Zinc Porphyrin Dimers to DABCO andCorresponding Thermodynamic Study

Chem. J. Chinese Universities ›› 2002, Vol. 23 ›› Issue (4): 700.

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Molecular Recognition of Zinc Porphyrin Dimers to DABCO andCorresponding Thermodynamic Study

REN Qi-Zhi^1,2, ZHU Zhi-Ang², JIANG Dong-Qing², HUANG Jin-Wang³, JI Liang-Nian³, CHEN Yong-Ti²

1. School of Chemistry and Chemical Technology, Shanghai Jiaotong University. Shanghai 200240, China;
2. Department of Chemistry, University, Tianjin 300071, China;
3. Department of Chemistry, Zhongshan University, Guangzhou 510275, China

Received:2000-04-12 Online:2002-04-24 Published:2002-04-24

Abstract

Abstract: A series of p/p type zinc porphyrin dimers covalently linked with a flexible chain are synthe-sized and characterized.The molecular recognition of zinc porphyrin dimers and corresponding monomer torigid nitrogenous bidentate ligand DABCO (1,4-diazobicyclo[2,2,2]octane) are described in detail by ¹H NMR and UV-Vis spectroscopy.DABCOcan bind inside the cavities of porphyrin dimers and form aternary sandwich complex as the length of the alkoxyl chain is long enough and their molar ratio is suit-able.The thermodynamic parameters such as the equilibrium constants, stoichiometric numbers, and thecorresponding enthalpies and entropies of the binding behavior are also obtained by UV-Vis spectroscopy.

Key words: Zinc porphyrin dimer, ¹H NMR, π-&pi, interaction, Molecular recognition, Thermodynamic pa-rameter

CLC Number:

O614.24

TrendMD:

REN Qi-Zhi, ZHU Zhi-Ang, JIANG Dong-Qing, HUANG Jin-Wang, JI Liang-Nian, CHEN Yong-Ti. Molecular Recognition of Zinc Porphyrin Dimers to DABCO andCorresponding Thermodynamic Study[J]. Chem. J. Chinese Universities, 2002, 23(4): 700.

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Molecular Recognition of Zinc Porphyrin Dimers to DABCO andCorresponding Thermodynamic Study

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