期刊
JOURNAL OF MOLECULAR LIQUIDS
卷 359, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.molliq.2022.119265
关键词
Chromonic liquid crystals; Induced chirality; Spherical confinement
资金
- POR Project INCOMARC [CUP J51B19000340005]
- PON Attraction and International MobilityRI 2014-2020 [AIM 1875705-2, CUP H24119000450005]
- [PON ARS01_00401]
- [CUP: B24I20000080001]
This study reports advances in understanding the supramolecular arrangement and induced chirality for the chromonic molecule Sunset Yellow and its interaction with salts and L-peptides. The research demonstrates the rise of enhanced chirality in Sunset Yellow microspheres and proposes two possible mechanisms for this phenomenon: intercalation of the chiral dopant or binding. These findings are significant for the potential use of these microspheres in optical and sensing applications.
The reflection symmetry breaking observed in chromonic liquid crystals confined in different geometries, like tactoids, microspheres or capillaries, has been the focus of researchers in the last few years. Although the assembly mechanism that drives this behavior is common to most chromonic materials, the interface phenomena and the induced chirality are strongly dependent on the chromonic molecule itself. In this work, we report advances in understanding the supramolecular arrangement and induced chirality for the chromonic molecule Sunset Yellow and its interaction with salts and L-peptides. By means of optical microscopy, X-ray diffraction and atomic force microscopy, we demonstrate the rise of enhanced chirality in Sunset Yellow microspheres and propose an explanation of this phenomenon through two possible mechanisms: intercalation of the chiral dopant or binding. Our findings on the capability to control the delicate thermodynamic balance among chromonics, ions, chiral dopants, and water and its kinetics may open new perspectives for using these microspheres in optical and sensing applications. (C) 2022 Elsevier B.V. All rights reserved.
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