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Title: Preparation of Nanocomposite Plasmonic Films Made from Cellulose Nanocrystals or Mesoporous Silica Decorated with Unidirectionally Aligned Gold Nanorods

Journal Article · · Materials
DOI:https://doi.org/10.3390/ma7043021· OSTI ID:1628446
 [1];  [1];  [2];  [1];  [3]
  1. Univ. of Colorado, Boulder, CO (United States). Dept. of Physics
  2. National Inst. of Standards and Technology (NIST), Boulder, CO (United States)
  3. Univ. of Colorado, Boulder, CO (United States). Dept. of Physics; Univ. of Colorado, Boulder, CO (United States). Dept. of Electrical, Computer and Energy Engineering. Materials Science and Engineering Program. Liquid Crystal Materials Research Center; Univ. of Colorado, Boulder, CO (United States). National Renewable Energy Lab. (NREL). Renewable and Sustainable Energy Inst.

Using liquid crystalline self-assembly of cellulose nanocrystals, we achieve long-range alignment of anisotropic metal nanoparticles in colloidal nanocrystal dispersions that are then used to deposit thin structured films with ordering features highly dependent on the deposition method. These hybrid films are comprised of gold nanorods unidirectionally aligned in a matrix that can be made of ordered cellulose nanocrystals or silica nanostructures obtained by using cellulose-based nanostructures as a replica. The ensuing long-range alignment of gold nanorods in both cellulose-based and nanoporous silica films results in a polarization-sensitive surface plasmon resonance. The demonstrated device-scale bulk nanoparticle alignment may enable engineering of new material properties arising from combining the orientational ordering of host nanostructures and properties of the anisotropic plasmonic metal nanoparticles. Our approach may also allow for scalable fabrication of plasmonic polarizers and nanoporous silica structures with orientationally ordered anisotropic plasmonic nanoinclusions.

Research Organization:
Univ. of Colorado, Boulder, CO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
SC0010305
OSTI ID:
1628446
Journal Information:
Materials, Vol. 7, Issue 4; ISSN 1996-1944
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

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Orientationally Ordered Colloidal Co-Dispersions of Gold Nanorods and Cellulose Nanocrystals journal August 2014
Charge density modification of carboxylated cellulose nanocrystals for stable silver nanoparticles suspension preparation journal June 2015
Optically tunable chiral nematic mesoporous cellulose films journal January 2015
Cellulose–gold nanoparticle hybrid materials journal January 2017
Amplitude effects on seismic velocities: How low can we go? journal February 2019
Liquid crystalline cellulose-based nematogels journal August 2017
Preparation of optical waveplates from cellulose nanocrystal nematics on patterned polydimethylsiloxane substrates journal January 2019
Equilibrium Liquid Crystal Phase Diagrams and Detection of Kinetic Arrest in Cellulose Nanocrystal Suspensions journal May 2016
Liquid crystalline cellulose-based nematogels text January 2018
Layer by Layer Mesoporous Silica-Hyaluronic Acid-Cyclodextrin Bifunctional “Lamination”: Study of the Application of Fluorescent Probe and Host–Guest Interactions in the Drug Delivery Field journal September 2018