Digital Color in Cellulose Nanocrystal Films

被引：234

作者：

Dumanli, Ahu Guemrah ^{[1
,2
]}

van der Kooij, Hanne M. ^{[1
]}

Kamita, Gen ^{[1
]}

Reisner, Erwin ^{[2
]}

Baumberg, Jeremy J. ^{[1
]}

Steiner, Ullrich ^{[1
,3
]}

Vignolini, Silvia ^{[2
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Dept Phys, Cambridge CB3 0HE, England

[2] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England

[3] Adolphe Merkle Inst, CH-1700 Fribourg, Switzerland

来源：

ACS APPLIED MATERIALS & INTERFACES | 2014年 / 6卷 / 15期

基金：

英国工程与自然科学研究理事会; 英国生物技术与生命科学研究理事会;

关键词：

cellulose nanocrystals; chiral-nematic films; structural color; iridescence; self-assembly; CHIRAL NEMATIC PHASE; SUSPENSIONS;

D O I：

10.1021/am501995e

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Cellulose nanocrystals (CNCs) form chiral nematic phases in aqueous suspensions that can be preserved upon evaporation of water. The resulting films show an intense directional coloration determined by their microstructure. Here, microreflection experiments correlated with analysis of the helicoidal nanostructure of the films reveal that the iridescent colors and the ordering of the individual nematic layers are strongly dependent on the polydispersity of the size distribution of the CNCs. We show how this affects the self-assembly process, and hence multidomain color formation in such bioinspired structural films.

引用

页码：12302 / 12306

页数：5

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