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Title: Self-assembly of photoresponsive molecular amphiphiles in aqueous media
Authors: Chen, SY
Costil, R
Leung, FKC 
Feringa, BL
Issue Date: May-2021
Source: Angewandte chemie international edition, 17 May 2021, v. 60, no. 21, p. 11604-11627
Abstract: Amphiphilic molecules, comprising hydrophobic and hydrophilic moieties and the intrinsic propensity to self-assemble in aqueous environment, sustain a fascinating spectrum of structures and functions ranging from biological membranes to ordinary soap. Facing the challenge to design responsive, adaptive, and out-of-equilibrium systems in water, the incorporation of photoresponsive motifs in amphiphilic molecular structures offers ample opportunity to design supramolecular systems that enables functional responses in water in a non-invasive way using light. Here, we discuss the design of photoresponsive molecular amphiphiles, their self-assembled structures in aqueous media and at air-water interfaces, and various approaches to arrive at adaptive and dynamic functions in isotropic and anisotropic systems, including motion at the air-water interface, foam formation, reversible nanoscale assembly, and artificial muscle function. Controlling the delicate interplay of structural design, self-assembling conditions and external stimuli, these responsive amphiphiles open several avenues towards application such as soft adaptive materials, controlled delivery or soft actuators, bridging a gap between artificial and natural dynamic systems.
Keywords: Aqueous medium
Photoresponsive amphiphile
Responsive foam
Soft material
Supramolecular assembly
Publisher: Wiley-VCH
Journal: Angewandte chemie international edition 
ISSN: 1433-7851
EISSN: 1521-3773
DOI: 10.1002/anie.202007693
Rights: © 2020 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH
This is an open access article underthe terms of the Creative Commons Attribution Non-CommercialLicense (https://creativecommons.org/licenses/by-nc/4.0/), which permits use, distributionand reproduction in anymedium, provided the original work is properly cited and is not usedfor commercial purposes.
The following publication Chen, Shaoyu, Costil, Romain, Leung, Franco King-Chi, Feringa, Ben L., Self-Assembly of Photoresponsive Molecular Amphiphiles in Aqueous Media, 2021/05/17, Angew. Chem. Int. Ed., 60(21), 11607-11627, ISSN 1433-7851 is available at https://doi.org/10.1002/anie.202007693
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