期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 61, 期 43, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202209777
关键词
Aggregation-Induced Phosphorescence; Molecular Conformation; Phase Transtions; Phototuning; Self-Assembly
资金
- Shanghai Sailing Program [20YF1432400]
- National Natural Science Foundation of China (NSFC) [22105128]
- National Key Research and Development Program of China [2017YFA0207700]
- Swedish Research Council [2020-04600, SNIC 2020-3-29, 2018-05973]
This study developed a far-from-equilibrium system by integrating photoexcitation-induced aggregation molecules and block copolymers to establish an in situ phase-volume ratio photocontrol strategy, allowing for the production of a wide range of assembled structures including full-scale phase-diagram structures from lamellar to spherical. The phase transition was accompanied by aggregation-induced phosphorescence and hydrophilicity/hydrophobicity change for building functional surfaces.
Controlling phase separation and transition plays a core role in establishing and maintaining the function of diverse self-assembled systems. However, it remains challenging to achieve wide-range continuous phase transition for dynamically producing a variety of assembled structures. Here, we developed a far-from-equilibrium system, upon the integration of photoexcitation-induced aggregation molecules and block copolymers, to establish an in situ phase-volume ratio photocontrol strategy. Thus, full-scale phase-diagram structures, from lamellar structure to gyroidal, cylindrical, and finally to a spherical one, can be accessed under different irradiation periods. Moreover, the phase transition was accompanied by considerable aggregation-induced phosphorescence and hydrophilicity/hydrophobicity change for building a functional surface. This strategy allows for a conceptual advance of accessing a wide range of distinct self-assembled structures and functions in real time.
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