A Dual-Modality Photoswitchable Supramolecular Polymer

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• 作者：Qiwei Zhang ; Da-Hui Qu ; Junchen Wu ; Xiang Ma ; Qiaochun Wang ; He Tian
• 刊名：Langmuir
• 出版年：2013
• 出版时间：April 30, 2013
• 年：2013
• 卷：29
• 期：17
• 页码：5345-5350
• 全文大小：351K
• 年卷期：v.29,no.17(April 30, 2013)
• ISSN：1520-5827

文摘

Covalent or noncovalent linked polymers with stimuli-responsive properties have been well researched as a kind of advanced functional materials. However, little effort has been devoted to establishing a bridge for switching between covalent polymers and noncovalent polymers. Actually, such unitive system is promising because it can combine their chemical advantages of two types of polymers in a single and tunable platform. Herein, by taking advantage of reversible photodimerization of coumarins and host鈥揼uest assemblies with 纬-cyclodextrin (纬-CD), we demonstrate a simple and effective way to construct a dual-modality supramolecular polymer, which can be switched between a noncovalent polymer and its corresponding covalent polymer in response to light stimuli. Moreover, this unique switchable polymer can also be employed to construct a dual-stimuli responsive supramolecular hydrogel with the surfactant cetyl trimethylammonium bromide (CTAB). This methodology establishes a bridge between the two 鈥減olymer mansions鈥?and is promising to open a new class of photoswitchable materials.