Allosteric binding of K+ to crown ether macrocycles appended to a lanthanum double decker system

A. Robertson, M. Ikeda, M. Takeuchi, S. Shinkai

研究成果: ジャーナルへの寄稿学術誌査読

32 被引用数 (Scopus)

抄録

A benzocrown-appended lanthanum(III) porphyrin double decker has been synthesized which is capable of binding simple K+ in a cooperative, allosteric fashion to form a 1:4 complex. Analysis of this system by means of the Hill equation gave an overall binding constant (Kb) of 1.0 × 1014 (mol dm-3)-4 and a Hill coefficient of 4.0. This same system, however, binds Na+ in a conventional, linear fashion. These results indicate that the novel allosteric binding occurs as the result of 1:2 sandwich complexes between K+ and appended crown ether moieties of the two joined porphyrins. The suitability of lanthanum(III) over cerium(IV) for preparing this highly crowded double decker porphyrin is also noted.

本文言語英語
ページ(範囲)883-888
ページ数6
ジャーナルBulletin of the Chemical Society of Japan
74
5
DOI
出版ステータス出版済み - 5月 2001

!!!All Science Journal Classification (ASJC) codes

  • 化学一般

フィンガープリント

「Allosteric binding of K+ to crown ether macrocycles appended to a lanthanum double decker system」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル