南方科技大学知识苑(SUSTech KC): Sunlight helps self-healing of liquid-crystalline gels of lignin-graft PMMA doped with GO and azobenzene

题名	Sunlight helps self-healing of liquid-crystalline gels of lignin-graft PMMA doped with GO and azobenzene
作者	Wei，Zhenyao 1,2 ; Deng，Yonghong2 ; Yu，Mingming 3; Yu，Haifeng 1
通讯作者	Deng，Yonghong
发表日期	2020
DOI	10.1080/02678292.2019.1706111
发表期刊	LIQUID CRYSTALS 影响因子和分区
ISSN	0267-8292
EISSN	1366-5855
摘要	Self-healing soft matters have attracted much attention because of their extraordinary performance for extending working life of materials. To utilise sunlight to help self-healing of liquid-crystalline gels composed of one low-mass liquid crystal (5CB) and one hyperbranched polymer (lignin-graft-PMMA), a low content of graphene oxide (GO) and one azobenzene compound are doped as photoresponsive additives. Upon irradiation of UV light, the azobenzene can induce gel-sol transition due to the photoinduced molecular cooperative motion, thus surface dents can be repaired. On the other hand, GO functions as the nanoscale heat source because of the photothermal effect under exposure of visible (VIS) or NIR light, heating the gel to undergo gel-sol transition for mending surface cracks. In addition, the mechanical properties of the gels are also improved by addition of GO. This NIR-VIS-UV light responsive liquid-crystalline gel shows highly effective gel-sol transition upon direct solar radiation because of the coexistence of both photochemical and photothermal effect. Furthermore, these sunlight-assistant self-healing gels also show anisotropy and orientation just like other liquid-crystalline materials, enabling them to find various advanced applications with longer service life.
关键词	azobenzene graphene oxide liquid crystal gel self-healing Sunlight
相关链接	[Scopus记录]
收录类别	SCI
语种	英语
学校署名	通讯
资助项目	National Key Reseach and Development Project of China[2018YFB0703702]
WOS研究方向	Chemistry ; Crystallography ; Materials Science
WOS类目	Chemistry, Multidisciplinary ; Crystallography ; Materials Science, Multidisciplinary
WOS记录号	WOS:000505434800001
出版者	TAYLOR & FRANCIS LTD
ESI学科分类	CHEMISTRY
Scopus记录号	2-s2.0-85078623193
来源库	Scopus
引用统计	被引频次[WOS]：5
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/60000
专题	工学院_材料科学与工程系
作者单位	1.Department of Material Science and Engineering,College of Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education,Peking University,Beijing,China 2.Department of Materials Science & Engineering,Southern University of Science and Technology of China,Shenzhen,China 3.College of Chemistry and Molecular Engineering,Zhengzhou University,Zhengzhou,China
第一作者单位	材料科学与工程系
通讯作者单位	材料科学与工程系
推荐引用方式 GB/T 7714	Wei，Zhenyao,Deng，Yonghong,Yu，Mingming,et al. Sunlight helps self-healing of liquid-crystalline gels of lignin-graft PMMA doped with GO and azobenzene[J]. LIQUID CRYSTALS,2020.
APA	Wei，Zhenyao,Deng，Yonghong,Yu，Mingming,&Yu，Haifeng.(2020).Sunlight helps self-healing of liquid-crystalline gels of lignin-graft PMMA doped with GO and azobenzene.LIQUID CRYSTALS.
MLA	Wei，Zhenyao,et al."Sunlight helps self-healing of liquid-crystalline gels of lignin-graft PMMA doped with GO and azobenzene".LIQUID CRYSTALS (2020).