PREPARATION AND BINDING-AFFINITY OF NEW PORPHYRIN HOST MOLECULE FOR UBIQUINONE ANALOGS

被引：14

作者：

HAYASHI, T

MIYAHARA, T

AOYAMA, Y

NONOGUCHI, M

OGOSHI, H

机构：

来源：

CHEMISTRY LETTERS | 1994年 / 09期

关键词：

D O I：

10.1246/cl.1994.1749

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

alpha alpha alpha alpha-meso-Tetra(7-hydroxy-1-naphthyl)porphyrin (1) is prepared as a host molecule for ubiquinone analogue, 2,3,5,6-tetramethoxy-p-benzoquinone (2). The affinity and thermodynamic aspects in porphyrin 1 - quinone 2 pairing were determined by titrimetric measurement of electronic absorption and fluorescence spectra. The binding constant of 1 for 2 at 298 K is obtained; K-a = 7.9 x 10(2) M(-1) in toluene. The fashion of this porphyrin-quinone pairing was large different from that of previous host, alpha alpha alpha alpha-meso-tetra(2-hydroxy-1-naphthyl)porphyrin (3), -quinone 2 pairing.

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页码：1749 / 1752

页数：4

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