Polarity Effect of Exterior Chains on Self-Assembled Structure and Aggregation Mechanism of Tetraphenylethene Derivatives in THF/Water Mixtures

被引：9

作者：

Han, Su-Bin ^{[1
]}

Kim, Ho-Joong ^{[2
]}

Jung, Dasom ^{[1
]}

Kim, Jinhee ^{[3
]}

Cho, Byoung-Ki ^{[3
]}

Cho, Sung ^{[1
]}

机构：

[1] Chonnam Natl Univ, Dept Chem, Kwangju 500757, South Korea

[2] Chosun Univ, Dept Chem, Kwangju 501759, South Korea

[3] Dankook Univ, Dept Chem, Yongin 448701, Gyeonggi, South Korea

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2015年 / 119卷 / 28期

基金：

新加坡国家研究基金会;

关键词：

COIL BLOCK-COPOLYMERS; INDUCED EMISSION; INTRAMOLECULAR ROTATION; MOLECULAR DESIGN; FLUORESCENCE; RESTRICTION; AIE;

D O I：

10.1021/acs.jpcc.5b03525

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：

We investigated self-assembled structures and aggregation mechanisms of tetraphenylethene (TPE) derivatives in a THF/water mixtures using time-resolved spectroscopic measurements and theoretical calculations. The TPE derivatives, with nonpolar aromatic core and nonpolar exterior dodecyl chains, form unidirectional ordered aggregates in the THF/water solvent mixture because of the effective ordered aggregation between nonpolar aromatic cores. The aggregation formation of the other TPE derivative with polar exterior di(ethylene oxide) chains is caused by an emulsion-driven amorphous aggregation without any obvious attractive intermolecular interaction. The different polarities of the exterior chains in the TPE derivatives and the emulsion formation in the THF/water mixture induce different aggregation mechanisms: unidirectional ordered versus emulsion-driven amorphous aggregates.

引用

页码：16223 / 16229

页数：7