Aggregation-Induced Reversible Thermochromism of Novel Azo Chromophore-Functionalized Polydiacetylene Cylindrical Micelles

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• 作者：Si Wu ; Lifang Niu ; Jing Shen ; Qijin Zhang ; Christoph Bubeck
• 刊名：Macromolecules
• 出版年：2009
• 出版时间：January 13, 2009
• 年：2009
• 卷：42
• 期：1
• 页码：362-367
• 全文大小：325K
• 年卷期：v.42,no.1(January 13, 2009)
• ISSN：1520-5835

文摘

We demonstrate a new strategy for improved stabilization of polydiacetylene micelles. They show temperature-induced color changes, which are fully reversible even at varying pH. A novel azo chromophore-functionalized amphiphilic diacetylene molecule is synthesized and used to prepare self-assembled cylindrical micelles. The micelles can be polymerized by 254 nm light irradiation. The azo chromophores form H- and J-like aggregates in the polydiacetylene micelles and increase the stability of the micelles, which leads to fully reversible thermochromism of the micelles in the temperature range between 20 and 90 °C and the pH range between 5.6 and 9.6.