Orientationally ordered colloidal co-dispersions of gold nanorods and cellulose nanocrystals.
basic_science · Level V
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- Record sourced from PubMed, PMID 25164198.
- Also identified by DOI 10.1002/adma.201402699.
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Abstract
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.
Medical subject headings
- Cellulose
- Gold Compounds
- Nanoparticles
- Nanotubes