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Colloidal plasmonic DNA-origami with photo-switchable chirality in liquid crystals

Journal Article · · Optics Letters
DOI:https://doi.org/10.1364/ol.44.002831· OSTI ID:1830815
 [1];  [2];  [3];  [4]
  1. Univ. of Colorado, Boulder, CO (United States); University of Colorado Boulder
  2. Aalto University School of Science, Aalto (Finland)
  3. Kyoto Univ. (Japan)
  4. Univ. of Colorado, Boulder, CO (United States); National Renewable Energy Lab. (NREL), Boulder, CO (United States). Renewable and Sustainable Energy Institute

Photo-responsive nanomaterials hold great promise for realizing information processing devices, micro-machines and biosensors. Scalable assembly of such materials using mesostructured liquids such as liquid crystals remains a challenge due to the poor compatibility of nanostructures and the host medium. Here we demonstrate a new type of colloidal dispersion of plasmonic DNA-origami with photo-switchable chirality in cellulose nanofiber-based liquid crystals. The composite material inherits properties of DNA-origami plasmonic nanostructures, so that the composite’s chirality can be erased by ultraviolet light and recovered by visible light. The cellulose nanofibers provide a liquid crystalline host with weak optical birefringence, which barely affects the polarization of the incident light, so that the response is dominated by circular dichroism of uniformly dispersed plasmonic nanostructures. Our approach may serve as a new platform for scalable assembling DNA origami-templated nanomaterials.

Research Organization:
Univ. of Colorado, Boulder, CO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Advanced Research Projects Agency - Energy (ARPA-E)
Grant/Contract Number:
AR0000743; SC0019293
OSTI ID:
1830815
Alternate ID(s):
OSTI ID: 1515602
OSTI ID: 1613707
Journal Information:
Optics Letters, Journal Name: Optics Letters Journal Issue: 11 Vol. 44; ISSN 0146-9592
Publisher:
Optical Society of America (OSA)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (2)

Dynamic DNA nanotechnology: toward functional nanoscale devices journal January 2020
Collective resonance in helical superstructures of gold nanorods journal January 2020

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