Controlled Self-Assembly of Cellulose Nanocrystal as Custom-Tailored Photonics and Complex Soft Matter

IF 14 Q1 CHEMISTRY, MULTIDISCIPLINARY
Guang Chu
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Abstract

Cellulose is widely distributed in nature and imparts structural integrity and mechanical support to the cell walls of plants, algae, and some bacteria. It has gained significant attention due to the growing demand for the fabrication of sustainable and high-performance materials. Various types of cellulosic materials are involved, among which cellulose nanocrystals (CNCs) emerge as a compelling next-gen material extracted from bulk cellulose, attracting considerable attention from both industry and academia. These rodlike colloidal materials exhibit remarkable mechanical, optical, and thermal properties due to their high aspect ratio, biodegradability, and renewable nature, providing promising opportunities for sustainable solutions to modern complex technological and societal challenges. Particularly noteworthy is the inherent chirality of CNC that triggers spontaneous self-assembly into left-handed helicoidal arrangements, termed cholesteric organization and sustained in both suspension and solid films. This unique property begets long-range ordered liquid crystallinity and polarization-sensitive structural color, highlighting the potential of CNC as a versatile platform for the design and fabrication of artificial functional materials with naturally derived alternatives. Benefiting from the robust self-assembly power of CNC, there is a burgeoning development in the creation of innovative nanocellulose-based materials.

Abstract Image

作为定制光子学和复杂软物质的纤维素纳米晶体的受控自组装
纤维素广泛分布于自然界中,为植物、藻类和一些细菌的细胞壁提供结构完整性和机械支撑。由于对制造可持续高性能材料的需求日益增长,纤维素已受到广泛关注。纤维素材料种类繁多,其中纤维素纳米晶体(CNC)作为一种从大块纤维素中提取的引人注目的新一代材料,吸引了工业界和学术界的极大关注。这些棒状胶体材料具有高纵横比、生物可降解性和可再生性,因此表现出卓越的机械、光学和热学特性,为解决现代复杂的技术和社会挑战提供了可持续发展的机会。尤其值得注意的是,数控系统固有的手性可引发自发自组装,形成左手螺旋排列,称为胆甾组织,并在悬浮液和固体薄膜中持续存在。这种独特的性质产生了长程有序液晶和偏振敏感的结构颜色,凸显了 CNC 作为设计和制造人工功能材料的多功能平台的潜力。得益于 CNC 强大的自组装能力,以纳米纤维素为基础的创新材料正在蓬勃发展。
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CiteScore
17.70
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