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Controlling the Multiple Chiroptical Inversion in Biphasic Liquid-Crystalline Polymers.

Authors :
Cheng X
Miao T
Ma Y
Zhu X
Zhang W
Zhu X
Source :
Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2021 Nov 08; Vol. 60 (46), pp. 24430-24436. Date of Electronic Publication: 2021 Oct 07.
Publication Year :
2021

Abstract

While controlling the chirality and modulating the helicity is a challenging task, it attracts great research interest for gaining a better understanding of the origin of chirality in nature. Herein, structurally similar azobenzene (Azo) vinyl monomers were designed in which the alkyl chains comprised the chiral stereocenter with different achiral tail lengths. Combining the synchronous polymerization, supramolecular stacking and self-assembly, the multiple chiroptical inversion of the Azo-polymer supramolecular assemblies can be modulated by the tail length and DP of Azo blocks during in situ polymerization. The DP-, UV light-, temperature-, aging time-dependent chiroptical properties and liquid-crystalline (LC) characterization indicated that the amorphous-to-LC phase transition and biphasic LC interconversion allow the transcription of intra-chain π-π stacking, inter-chain H- and J-aggregation, thereby controlling the dynamic multiple reversal of supramolecular chirality.<br /> (© 2021 Wiley-VCH GmbH.)

Details

Language :
English
ISSN :
1521-3773
Volume :
60
Issue :
46
Database :
MEDLINE
Journal :
Angewandte Chemie (International ed. in English)
Publication Type :
Academic Journal
Accession number :
34505335
Full Text :
https://doi.org/10.1002/anie.202109084