Control of Large-Area Orderliness of a 2D Supramolecular Chiral Microstructure by a 1D Interference Field

doi:10.1021/acsami.1c12575

中山醫學大學機構典藏 CSMUIR > 中山醫學大學研究成果 > 期刊論文 > Item 310902500/23910

Please use this identifier to cite or link to this item: https://ir.csmu.edu.tw:8080/ir/handle/310902500/23910

Title:	Control of Large-Area Orderliness of a 2D Supramolecular Chiral Microstructure by a 1D Interference Field
Authors:	Jiang, SA;Wang, CH;Zhang, YS;Mo, TS;Huang, SY;Hsieh, XL;Wong, YJ;Lin, JD;Lee, CR
Keywords:	cholesteric liquid crystal;chiral;Helfrich deformation;micro/nanostructure;supramolecular
Date:	2021
Issue Date:	2022-08-05T09:44:49Z (UTC)
Publisher:	AMER CHEMICAL SOC
ISSN:	1944-8244
Abstract:	Self-organized periodic micro/nanostructures caused by stimulus-responsive structural deformation often occur in anisotropic self-assembled supramolecular systems (e.g., liquid crystal systems). However, the long-range orderliness of these structures is often beyond control. In this article, we first demonstrate that a large-area disordered two-dimensional (2D) microgrid chiral structure appears in the cholesteric liquid crystal (CLC) reactive mixture because of the photopolymerization-induced Helfrich deformation effect under exposure to the single UV-laser beam. The result is attributed to the impact of an internal longitudinal strain, which is caused by the pitch contraction of the CLC-monomer region through the continuing compression of the thickening CLC polymer layer adhered on the illuminated substrate of the sample during photopolymerization. The experimental results further show that a one-dimensional (1D) UV-laser interference field can be used to effectively control the postformed 2D microgrid structure to arrange in an orderly manner throughout the large exposed area (an order of centimeter). The optimum ability for controlling the orderliness of the microgrid structure can be achieved if the spacing width of the interference field approximates the periodicity of the postformed 2D microgrids. Several factors, such as the pitch of the CLC mixture and the included angle and intensity of the two interfering laser beams, which influence the orderliness and properties of the 2D microgrid structure, are explored in this study. The result of this research opens a new page to improve the applicability of the Helfrich deformation phenomenon and further provides a reference platform for manipulating, modifying, and even tailoring periodic micro/ nanostructures in self-organized supramolecular soft-matter systems for application in advanced optics/photonics.
URI:	http://dx.doi.org/10.1021/acsami.1c12575 https://www.webofscience.com/wos/woscc/full-record/WOS:000700877100104 https://ir.csmu.edu.tw:8080/handle/310902500/23910
Relation:	ACS APPLIED MATERIALS & INTERFACES ,2021,v13,issue 37, P44916-44924
Appears in Collections:	[中山醫學大學研究成果] 期刊論文

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