Photoreversible Polymer鈥揝urfactant Micelles Using the Molecular Recognition of 伪-Cyclodextrin

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• 作者：Zhen-Qiang Dong ; Ya Cao ; Xiao-Juan Han ; Min-Min Fan ; Qi-Juan Yuan ; Yi-Fu Wang ; Bang-Jing Li ; Sheng Zhang
• 刊名：Langmuir
• 出版年：2013
• 出版时间：March 12, 2013
• 年：2013
• 卷：29
• 期：10
• 页码：3188-3194
• 全文大小：388K
• 年卷期：v.29,no.10(March 12, 2013)
• ISSN：1520-5827

文摘

Photoreversible micelles were achieved by a combination of commercially available components sodium alginate (Alg), tetradecyltrimethylammonium bromide (TTAB), 伪-cyclodextrin (伪-CD), and 4-(phenylazo)benzoic acid (PBA). Under visible light irradiation, 伪-CD interacted more favorably with PBA than with alkyl chains of TTAB. Therefore, polymer鈥搒urfactant micelles were formed by the self-assembly of Alg and TTAB through electrostatic attraction. After UV irradiation, micelles were disrupted because PBA in the cis form lost its ability to complex with 伪-CD, and then the latter was interacted with TTAB to prevent the association of alkyl chains of TTAB. On alternating irradiation of this quaternary system with UV and visible light, this reversible micellization process can be recycled many times.