Wang, L (Wang, Lu)^{[ 1,2 ]} ; Neal, T (Neal, Taylor)^{[ 2 ]} ; Chen, SG (Chen, Shigui)^{[ 1,2 ]} ; Badjic, JD (Badjic, Jovica D.)^{[ 2 ]}

Large unilamellar vesicles [1](n), composed of bolaamphiphilic baskets 1, were found to complex photoresponsive guest 3 and divalent 4 to, respectively, give stable vesicular assemblies [1(2)-(3)](n) and [1(2)-4(3)](n). With the assistance of H-1 NMR spectroscopy, electron microscopy, and dynamic light scattering, it was deduced that [1(2)-3](n) vesicles comprise ternary [1(2)-3] organized into a curved membrane in which a pair of baskets entraps a laterally positioned dicationic 3. In the case of [1(2)-4(3)](n) vesicles, however, the spectroscopic results suggest that three guest molecules 4 insert vertically between four baskets 1 to give pentanary [1(2)-4(3)] packed into the membrane of [1(2)-4(3)](n). Importantly, nanostructured [1(2)-3](n) and [1(2)-4(3)](n) retain rhodamine B (RhB) in their reservoir (fluorescence microscopy) and can be switched from one into another using UV light, with a disproportionate release of RhB dye. The reported complexes, organized into photoresponsive capsular materials, are rather unprecedented, demonstrating the potential of multivalency for creating functional structures of great interest in the areas of catalysis and delivery.

作者关键词:molecular encapsulation; molecular recognition; multivalency; self-assembly; vesicles

KeyWords Plus:SUPRAMOLECULAR CHEMISTRY; MOLECULAR RECOGNITION; VESICLES; NANOREACTORS; NANOMEDICINE; MECHANISM; POLYMERS; SWITCH

通讯作者地址: Chen, SG (通讯作者)

Wuhan Univ, Inst Adv Studies, 299 Bayi Rd, Wuhan 430072, Hubei, Peoples R China.

Ohio State Univ, Dept Chem & Biochem, Columbus, OH 43228 USA.

地址:

电子邮件地址:sgchen@whu.edu.cn; badjic.1@osu.edu

原文PDF链接：

https://onlinelibrary.wiley.com/doi/abs/10.1002/chem.201701996