Fluorescence color modulation by intramolecular and intermolecular π-π interactions in a helical zinc(II) complex

被引：244

作者：

Mizukami, S

Houjou, H

Sugaya, K

Koyama, E

Tokuhisa, H

Sasaki, T

Kanesato, M

机构：

[1] Natl Inst Adv Ind Sci & Technol, Nanoarchitecton Res Ctr, Tsukuba, Ibaraki 3058562, Japan

[2] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan

来源：

CHEMISTRY OF MATERIALS | 2005年 / 17卷 / 01期

关键词：

D O I：

10.1021/cm049744s

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

When a fluorescent compound shows unique optical properties, an elucidation of the mechanism may lead to an important development of novel sensing strategies. A helical 3,3'-di-tert-butylsalen-zinc(II) complex, [Zn2L21], has a red-shifted fluorescence as compared to that of [ZnL22], a half-structured mononuclear complex of [Zn2L21]; in addition, [Zn2L21] exhibits a fluorescence color change from green to light blue under external stimulations. We investigated the origins of these phenomena by spectroscopy, fluorescence lifetime measurement, fluorescence microscopy, X-ray powder diffraction, and X-ray single-crystal analysis. From the experimental data, we concluded that intramolecular and intermolecular pi-pi interactions are critical elements that determine the shifts of the fluorescence to a longer wavelength.

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页码：50 / 56

页数：7

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