文献类型：期刊文献

英文题名：A gemini surfactant-containing system with abundant self-assembly morphology and rheological behaviors tunable by photoinduction

作者：Tu, Yan[1];Gao, Mengge[1];Teng, Hongni[2];Shang, Yazhuo[1];Fang, Bo[3];Liu, Honglai[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]Shandong Univ Sci & Technol, Coll Chem & Environm Engn, Dept Appl Chem, Qingdao 266510, Peoples R China;[3]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, Lab Chem Engn Rheol, Shanghai 200237, Peoples R China

年份：2018

卷号：8

期号：29

起止页码：16004

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20181905180233);WOS:【SCI-EXPANDED(收录号:WOS:000431814200017)】；

基金：This work was supported by the National Natural Science Foundation of China (Project No. 21476072) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Morphology - Controlled drug delivery - Surface active agents - Irradiation - Self assembly - Rheology - Targeted drug delivery

摘要：Photoresponsive micellar systems with adjustable aggregate morphologies and rheological properties may be useful in a number of fields such as in microfluidics, controlled release, and sensors. However, the complexity and great difficulty of synthesising photosensitive molecules hamper their practical applications to a significant degree. In this study, we constructed a novel photoinduced self-assembly system by introducing the photoresponsive derivative trans-2-methoxy-cinnamate (trans-OMCA) into the gemini surfactant N, N'-bis(dodecyldimethyl)-1,2-ethane diammonium dibromide (12-2-12 center dot 2Br(-)) solutions. The system displays abundant phase behaviors, and the long worm-like micelles, vesicles, as well as an aqueous two-phase system (ATPS) are observed in the 12-2-12 center dot 2Br(-)/trans-OMCA mixed system even at lower surfactant concentrations. The UV-responsive behavior of the formed vesicles and the worm-like micelles is investigated systematically. The results have shown that OMCA undergoes photoisomerization from the trans-form to the cis-form through UV light irradiation that alters the molecular packing at the micellar interface and thus leads to the transformation of micellar morphologies. The long worm-like micelles will turn into much shorter units when the sample is exposed to 365 nm UV light accompanied by a decrease in solution viscosity by more than an order of magnitude. The formed vesicle system, however, can be utilized to generate a multi-state self-assembly structure, including a worm-like micelle and a small spherical micelle, depending on the UV irradiation time. The morphologies of micelles in a 12-2-12 center dot 2Br(-)/trans-OMCA mixed system can be tailored by adjusting the system composition and the duration of UV light irradiation. Correspondingly, the rheological behavior of the 12-2-12 center dot 2Br(-)/trans-OMCA mixed system can be purposely tuned. The light-induced system with abundant self-assembly behaviors and tunable rheological properties would widen the potential application of gemini surfactants in drug delivery, smart fluids, and materials science.