期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 52, 页码 18878-18882出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201911380
关键词
AIE effect; circularly polarized luminescence; helicity; mechano-responsive materials; supramolecular polymerization
资金
- NRF from the Ministry of Science, ICT and Future Planning, Korea [2017R1A4A1014595, 2018R1A2B2003637]
- Korea Basic Science Institute (KBSI) National Research Facilities & Equipment Center (NFEC) grant - Korea government (Ministry of Education) [2019R1A6C1010042]
- Next Generation BioGreen 21 Program (SSAC), Rural development Administration, Korea [PJ013186052019]
- Rural Development Administration (RDA), Republic of Korea [PJ013186052019] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Finely controlled circularly polarized luminescence (CPL) supramolecular polymerization based on a tetraphenylethene core with four l- or d-alanine branch side chains (l-1 and d-1) in the solution state is presented, resulting from the tuning of mechanical stimulus. Weak, green emissions of l-1 and d-1 in tetrahydrofuran (THF) were converted into strong blue emissions by tuning the mechanical stimulus. The strong blue emissions were caused by an aggregation-induced emission (AIE) effect during the formation of a supramolecular polymer. Lag time in the supramolecular polymerization was drastically reduced by the mechanical stimulus, which was indicative of the acceleration of the supramolecular polymerization. A significant enhancement of circular dichroism (CD) and CPL signals of l-1 and d-1 was observed by tuning the rotational speed of the mechanical stimulus, implying that the chiral supramolecular polymerization was accelerated by the mechanical stimulus.
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