PMID- 34047461 OWN - NLM STAT- MEDLINE DCOM- 20210809 LR - 20210809 IS - 1613-6829 (Electronic) IS - 1613-6810 (Linking) VI - 17 IP - 30 DP - 2021 Jul TI - Chiral Photonic Liquid Crystal Films Derived from Cellulose Nanocrystals. PG - e2007306 LID - 10.1002/smll.202007306 [doi] AB - As a nanoscale renewable resource derived from lignocellulosic materials, cellulose nanocrystals (CNCs) have the features of high purity, high crystallinity, high aspect ratio, high Young's modulus, and large specific surface area. The most interesting trait is that they can form the entire films with bright structural colors through the evaporation-induced self-assembly (EISA) process under certain conditions. Structural color originates from micro-nano structure of CNCs matrixes via the interaction of nanoparticles with light, rather than the absorption and reflection of light from the pigment. CNCs are the new generation of photonic liquid crystal materials of choice due to their simple and convenient preparation processes, environmentally friendly fabrication approaches, and intrinsic chiral nematic structure. Therefore, understanding the forming mechanism of CNCs in nanoarchitectonics is crucial to multiple fields of physics, chemistry, materials science, and engineering application. Herein, a timely summary of the chiral photonic liquid crystal films derived from CNCs is systematically presented. The relationship of CNC, structural color, chiral nematic structure, film performance, and applications of chiral photonic liquid crystal films is discussed. The review article also summarizes the most recent achievements in the field of CNCs-based photonic functional materials along with the faced challenges. CI - (c) 2021 Wiley-VCH GmbH. FAU - Duan, Chengliang AU - Duan C AD - State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, Guangzhou, CN510640, China. FAU - Cheng, Zheng AU - Cheng Z AD - State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, Guangzhou, CN510640, China. FAU - Wang, Bin AU - Wang B AUID- ORCID: 0000-0002-8114-7236 AD - State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, Guangzhou, CN510640, China. FAU - Zeng, Jinsong AU - Zeng J AD - State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, Guangzhou, CN510640, China. FAU - Xu, Jun AU - Xu J AD - State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, Guangzhou, CN510640, China. FAU - Li, Jinpeng AU - Li J AD - State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, Guangzhou, CN510640, China. FAU - Gao, Wenhua AU - Gao W AD - State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, Guangzhou, CN510640, China. FAU - Chen, Kefu AU - Chen K AD - State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, Guangzhou, CN510640, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20210528 PL - Germany TA - Small JT - Small (Weinheim an der Bergstrasse, Germany) JID - 101235338 RN - 9004-34-6 (Cellulose) SB - IM MH - Cellulose MH - *Liquid Crystals MH - *Nanoparticles MH - *Nanostructures MH - Optics and Photonics OTO - NOTNLM OT - cellulose nanocrystals OT - chiral nematic OT - chiral photonic film OT - liquid crystal phase OT - structural color EDAT- 2021/05/29 06:00 MHDA- 2021/08/10 06:00 CRDT- 2021/05/28 09:11 PHST- 2021/01/06 00:00 [revised] PHST- 2020/11/19 00:00 [received] PHST- 2021/05/29 06:00 [pubmed] PHST- 2021/08/10 06:00 [medline] PHST- 2021/05/28 09:11 [entrez] AID - 10.1002/smll.202007306 [doi] PST - ppublish SO - Small. 2021 Jul;17(30):e2007306. doi: 10.1002/smll.202007306. Epub 2021 May 28.