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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