Digital color in cellulose nanocrystal films

Ahu Gümrah Dumanli; Hanne M. Van Der Kooij; Gen Kamita; Erwin Reisner; Jeremy J. Baumberg; Ullrich Steiner; Silvia Vignolini

doi:10.1021/am501995e

Digital color in cellulose nanocrystal films

Ahu Gümrah Dumanli^*, Hanne M. Van Der Kooij, Gen Kamita, Erwin Reisner, Jeremy J. Baumberg, Ullrich Steiner, Silvia Vignolini

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

125 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	12302-12306
Number of pages	5
Journal	ACS Applied Materials and Interfaces
Volume	6
Issue number	15
DOIs	https://doi.org/10.1021/am501995e
Publication status	Published - 13 Aug 2014
Externally published	Yes

Keywords

cellulose nanocrystals
chiral-nematic films
iridescence
self-assembly
structural color

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10.1021/am501995eLicence: CC BY

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title = "Digital color in cellulose nanocrystal films",

abstract = "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.",

keywords = "cellulose nanocrystals, chiral-nematic films, iridescence, self-assembly, structural color",

author = "Dumanli, {Ahu G{\"u}mrah} and {Van Der Kooij}, {Hanne M.} and Gen Kamita and Erwin Reisner and Baumberg, {Jeremy J.} and Ullrich Steiner and Silvia Vignolini",

year = "2014",

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AU - Dumanli, Ahu Gümrah

AU - Van Der Kooij, Hanne M.

AU - Kamita, Gen

AU - Reisner, Erwin

AU - Baumberg, Jeremy J.

AU - Steiner, Ullrich

AU - Vignolini, Silvia

PY - 2014/8/13

Y1 - 2014/8/13

N2 - 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.

AB - 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.

KW - cellulose nanocrystals

KW - chiral-nematic films

KW - iridescence

KW - self-assembly

KW - structural color

U2 - 10.1021/am501995e

DO - 10.1021/am501995e

M3 - Article

C2 - 25007291

AN - SCOPUS:84906227346

VL - 6

SP - 12302

EP - 12306

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

SN - 1944-8244

IS - 15

ER -