蒽
纳米纤维
纳米颗粒
午睡
二聚体
肽
超分子化学
材料科学
光化学
四氢呋喃
化学
溶胶凝胶
纳米技术
化学工程
有机化学
溶剂
分子
神经科学
工程类
生物
生物化学
作者
Tiantian Xia,Xiaotong Cheng,Xianbao Sun,Gaolin Liang
出处
期刊:ACS materials letters
[American Chemical Society]
日期:2022-09-07
卷期号:4 (10): 1962-1966
被引量:1
标识
DOI:10.1021/acsmaterialslett.2c00670
摘要
Photoresponsive gel–solution (gel–sol) transitions endow supramolecular peptide gels with a powerful ability to release on-demand cargos in a controllable manner. Photophysical peptide gelators were reported for this purpose, but their gel–sol transitions were not sufficient. An anthracene–peptide conjugate gelator, which enables photochemically regulated gel–sol switches, has not been reported. In this work, we report an anthracene–peptide gelator Nap-Phe-Phe-Lys(anthracene)-OH (Mo-Nap-An) which, under 365 nm laser irradiation, is efficiently converted to its dimer Di-Nap-An, accompanied by a gel–sol transition (or nanofiber–nanoparticle transformation from the microperspective) in a tetrahydrofuran/water cosolvent (THF/H2O = 40/60, v/v). Reversely, upon 254 nm light irradiation, Di-Nap-An is converted to Mo-Nap-An, switching the solution to gel. This work provides a facile bottom-up strategy of “smart” photogelator design for efficient and photochemical control of gel properties.
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