Aggregation-Induced Reversible Thermochromism of Novel Azo Chromophore-Functionalized Polydiacetylene Cylindrical Micelles
2008; American Chemical Society; Volume: 42; Issue: 1 Linguagem: Inglês
10.1021/ma801709n
ISSN1520-5835
AutoresSi Wu, Lifang Niu, Jing Shen, Qijin Zhang, Christoph Bubeck,
Tópico(s)Supramolecular Self-Assembly in Materials
ResumoWe 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.
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