PMID- 34420727
OWN - NLM
STAT- MEDLINE
DCOM- 20220106
LR  - 20220106
IS  - 1879-1344 (Electronic)
IS  - 0144-8617 (Linking)
VI  - 272
DP  - 2021 Nov 15
TI  - Thermal annealing of iridescent cellulose nanocrystal films.
PG  - 118468
LID - S0144-8617(21)00855-9 [pii]
LID - 10.1016/j.carbpol.2021.118468 [doi]
AB  - The properties of chiral nematic and iridescent cellulose nanocrystal films with 
      different monovalent cations (CNC-X) obtained through evaporation-induced 
      self-assembly (EISA) can be modified by a variety of external stimuli. Here, we 
      study the transformations of their optical and structural properties when the 
      films are thermally annealed at 200  degrees C and 240  degrees C for up to 2 days. The chiral 
      nematic structure of the most thermally stable films is not destroyed even after 
      extensive heating due to the thermochemical stability of the cellulose backbone 
      and the presence of surface alkali counterions, which suppress catalysis of early 
      stage degradation. Despite the resilience of the cholesteric structure and the 
      overall integrity of heated CNC-X films, thermal annealing is often accompanied 
      by reduction of iridescence, birefringence, and transparency, as well as 
      formation of degradation products. The versatility, sustainability, and stability 
      of CNC-X films highlight their potential as temperature indicators and photonic 
      devices.
CI  - Copyright (c) 2021 Elsevier Ltd. All rights reserved.
FAU - D'Acierno, Francesco
AU  - D'Acierno F
AD  - Department of Chemistry, The University of British Columbia, 2036 Main Mall, 
      Vancouver, BC V6T 1Z1, Canada; Department of Physics and Astronomy, The 
      University of British Columbia, 6224 Agricultural Rd, Vancouver, BC V6T 1Z1, 
      Canada. Electronic address: fradaci@chem.ubc.ca.
FAU - Ohashi, Ryutaro
AU  - Ohashi R
AD  - Department of Chemistry, The University of British Columbia, 2036 Main Mall, 
      Vancouver, BC V6T 1Z1, Canada.
FAU - Hamad, Wadood Y
AU  - Hamad WY
AD  - Transformation and Interfaces Group, Bioproducts Innovation Centre of Excellence, 
      FPInnovations, 2665 East Mall, Vancouver, BC V6T 1Z4, Canada. Electronic address: 
      wadood.hamad@fpinnovations.ca.
FAU - Michal, Carl A
AU  - Michal CA
AD  - Department of Chemistry, The University of British Columbia, 2036 Main Mall, 
      Vancouver, BC V6T 1Z1, Canada; Department of Physics and Astronomy, The 
      University of British Columbia, 6224 Agricultural Rd, Vancouver, BC V6T 1Z1, 
      Canada. Electronic address: michal@physics.ubc.ca.
FAU - MacLachlan, Mark J
AU  - MacLachlan MJ
AD  - Department of Chemistry, The University of British Columbia, 2036 Main Mall, 
      Vancouver, BC V6T 1Z1, Canada; Stewart Blusson Quantum Matter Institute, 
      University of British Columbia, 2355 East Mall, Vancouver, BC V6T 1Z4, Canada; 
      WPI Nano Life Science Institute, Kanazawa University, Kanazawa 920-1192, Japan; 
      BioProducts Institute, University of British Columbia, 2385 Agronomy Road, 
      Vancouver, BC V6T 1Z4, Canada. Electronic address: mmaclach@chem.ubc.ca.
LA  - eng
PT  - Journal Article
DEP - 20210723
PL  - England
TA  - Carbohydr Polym
JT  - Carbohydrate polymers
JID - 8307156
RN  - 9004-34-6 (Cellulose)
SB  - IM
MH  - *Cellulose
MH  - Iridescence
MH  - Nanoparticles
MH  - Temperature
OTO - NOTNLM
OT  - Cellulose nanocrystal
OT  - Chiral nematic
OT  - Film
OT  - Thermal annealing
EDAT- 2021/08/24 06:00
MHDA- 2022/01/07 06:00
CRDT- 2021/08/23 05:37
PHST- 2021/04/22 00:00 [received]
PHST- 2021/06/20 00:00 [revised]
PHST- 2021/07/16 00:00 [accepted]
PHST- 2021/08/23 05:37 [entrez]
PHST- 2021/08/24 06:00 [pubmed]
PHST- 2022/01/07 06:00 [medline]
AID - S0144-8617(21)00855-9 [pii]
AID - 10.1016/j.carbpol.2021.118468 [doi]
PST - ppublish
SO  - Carbohydr Polym. 2021 Nov 15;272:118468. doi: 10.1016/j.carbpol.2021.118468. Epub 
      2021 Jul 23.