Finely Controlled Circularly Polarized Luminescence of a Mechano-Responsive Supramolecular Polymer.
Angew Chem Int Ed Engl
; 58(52): 18878-18882, 2019 Dec 19.
Article
en En
| MEDLINE
| ID: mdl-31628709
ABSTRACT
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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01-internacional
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MEDLINE
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En
Revista:
Angew Chem Int Ed Engl
Año:
2019
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Article