Premium
Orientationally Ordered Colloidal Co‐Dispersions of Gold Nanorods and Cellulose Nanocrystals
Author(s) -
Liu Qingkun,
Campbell Michael G.,
Evans Julian S.,
Smalyukh Ivan I.
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201402699
Subject(s) - nanorod , materials science , liquid crystal , nanomaterials , nanotechnology , plasmon , nanocrystal , polarization (electrochemistry) , colloidal gold , cellulose , luminescence , colloid , phase (matter) , isotropy , rod , nanoparticle , chemical engineering , optics , optoelectronics , chemistry , organic chemistry , medicine , physics , alternative medicine , pathology , engineering
Nematic‐like and helicoidally orientational self‐assemblies of gold nanorods co‐dispersed with cellulose nanocrystals to form liquid crystalline phases are developed. Polarization‐sensitive extinction spectra and two‐photon luminescence imaging are used to characterize orientations and spatial distributions of gold nanorods. Cholesteric–isotropic phase coexistence and continuous domains of single‐phase regions are observed and qualitatively discussed on the basis of entropic and electrostatic interactions in co‐dispersions of rigid rods of different aspect ratios. Potential applications include biologically compatible plasmonic composite nanomaterials for solar biofuel production and polarization‐sensitive plasmonic papers and fabrics.