The thermochromism of the ET(30) betaine in a micro-heterogeneous medium: A spectral and dynamics simulation study

被引：11

作者：

Aliaga, Carolina ^{[1
,2
]}

Briones, Luis ^{[3
]}

Caroli Rezende, Marcos ^{[1
]}

Tirapegui, Cristian ^{[1
]}

机构：

[1] Univ Santiago, Fac Quim & Biol, Santiago, Chile

[2] Univ Santiago, CEDENNA, Ctr Desarrollo Nanociencia & Nanotecnol, Santiago, Chile

[3] Univ Talca, Fac Ingn, Talca, Chile

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2010年 / 349卷 / 02期

关键词：

Thermochromism; Solvatochromism; Micelles; Poloxamers; Pluronics; Molecular dynamics simulation; OXIDE) BLOCK-COPOLYMER; FIELD GRADIENT NMR; FLUORESCENCE SPECTROSCOPY; MOLECULAR-DYNAMICS; AQUEOUS-SOLUTIONS; SOLVENT POLARITY; DYES; SOLVATOCHROMISM; MICELLIZATION; TEMPERATURE;

D O I：

10.1016/j.jcis.2010.05.088

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：

A spectral investigation of the thermochromic behavior of Reichardt's E-T(30) betaine in aqueous solutions of block copolymers ("poloxamers") P407, P237 and P105 was carried out as a function of temperature and concentration. The betaine microenvironment at various stages of the micellization process in these systems was mimicked with the aid of molecular dynamics simulations of model systems. These consisted of the E-T(30) probe in boxes of water molecules, in the presence of an isolated block copolymer of formula (PEO)(11)-(PPO)(16)-(PEO)(11), and of a micelle formed of 50 of these unimers. (C) 2010 Elsevier Inc. All rights reserved.

引用

页码：565 / 570

页数：6

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