Redox-Responsive Reverse Vesicles Self-Assembled by Pseudo[2]rotaxanes for Tunable Dye Release

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• 作者：Kang-Da Zhang ; Tian-You Zhou ; Xin Zhao ; Xi-Kui Jiang ; Zhan-Ting Li
• 刊名：Langmuir
• 出版年：2012
• 出版时间：October 23, 2012
• 年：2012
• 卷：28
• 期：42
• 页码：14839-14844
• 全文大小：303K
• 年卷期：v.28,no.42(October 23, 2012)
• ISSN：1520-5827

文摘

Reverse vesicles exhibiting functions similar to those of normal vesicles have been constructed through the self-assembly of TTF/CBPQT⁴⁺-based pseudo[2]rotaxanes in a nonpolar solvent. The ends of the threads of the pseudo[2]rotaxanes are attached with a Fr茅chet-type G-3 dendron and a hydrogen-bonded arylamide foldamer. These vesicles exhibit a response to redox. By exploiting the dynamic feature鈥攕pontaneously slow disassociation of the pseudorotaxanes鈥攖he sustained release of dyes embedded in the reverse vesicles has been demonstrated, which can be further tuned by changing the solvent polarity.