期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 122, 期 38, 页码 22143-22149出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.8b05583
关键词
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资金
- NRF [2017R1A4A1014595, 2018R1A2B2003637]
- Rural development Administration, Korea [PJ013186052018]
Stilbene units are extensively used as supra-molecular polymer substructures and key light-responsive components whose structures and/or functions are control-lable via photochemical reactions. A stilbene unit was used to control the morphologies and properties of supramolecular polymerization via ultraviolet (UV) light. A cyanostilbene-based derivative revealed one-dimensional supramolecular polymerization with J-aggregates in methylcyclohexane, leading to a strong emission. Supramolecular polymerization follows the cooperative nucleation-elongation mechanism. Most importantly, the 1D supramolecular polymer was irradiated by UV light and underwent intermolecular [2 + 2] cycloaddition to produce a two-dimensional sheet structure. Additionally, the thermodynamic parameters of the UV-exposed aggregates were approximately 1.5-fold smaller than those of the nonexposed aggregates. These results demonstrate the utility of such stilbene-based aggregates in case of customizable supramolecular polymerization with UV light.
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