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Title: Liquid Crystalline Order and Electric Switching of Upconversion Luminescence in Colloidal Nanorod Suspensions

Abstract

The polarization-dependent photon upconversion luminescence properties of large-scale orientationally ordered soft matter systems formed by colloidal nanorods dispersed in an isotropic solvent are studied. The electrostatically charged photon-upconverting nanorods form an isotropic dispersion at low concentrations, whereas orientational order and a nematic phase emerge at high concentrations. When an alternating electric field is applied, particles align in the direction of the electric field in both nematic and isotropic phases, though the nature of this electric switching is different in these two phases. Owing to the long-range orientational order in the nematic phase, the upconversion luminescence from the particles is polarized without an external field. Polarization dependence of these properties can also be electrically induced in an isotropic phase of the colloidal nanorods. Further, the dynamics of switching of photon upconversion luminescence in both nematic and isotropic dispersions are explored and their potential technological uses are discussed.

Authors:
 [1];  [1];  [1];  [2];  [3]; ORCiD logo [3]
  1. Univ. of Colorado, Boulder, CO (United States)
  2. CNRS/IN2P3. Univ. Paris (France)
  3. Univ. of Colorado, Boulder, CO (United States); National Renewable Energy Lab. (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1505079
Alternate Identifier(s):
OSTI ID: 1494954
Report Number(s):
NREL/JA-5900-73053
Journal ID: ISSN 2195-1071
Grant/Contract Number:  
AC36-08GO28308; DE‐AC36‐08GO28308
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Optical Materials
Additional Journal Information:
Journal Name: Advanced Optical Materials; Journal ID: ISSN 2195-1071
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; electric switching lyotropic; liquid crystals; polarized emission; upconversion nanoparticles

Citation Formats

Park, Sungoh, Mundoor, Haridas, Fleury, Blaise, Davidson, Patrick, van de Lagemaat, Jao, and Smalyukh, Ivan I. Liquid Crystalline Order and Electric Switching of Upconversion Luminescence in Colloidal Nanorod Suspensions. United States: N. p., 2019. Web. doi:10.1002/adom.201900041.
Park, Sungoh, Mundoor, Haridas, Fleury, Blaise, Davidson, Patrick, van de Lagemaat, Jao, & Smalyukh, Ivan I. Liquid Crystalline Order and Electric Switching of Upconversion Luminescence in Colloidal Nanorod Suspensions. United States. doi:10.1002/adom.201900041.
Park, Sungoh, Mundoor, Haridas, Fleury, Blaise, Davidson, Patrick, van de Lagemaat, Jao, and Smalyukh, Ivan I. Mon . "Liquid Crystalline Order and Electric Switching of Upconversion Luminescence in Colloidal Nanorod Suspensions". United States. doi:10.1002/adom.201900041.
@article{osti_1505079,
title = {Liquid Crystalline Order and Electric Switching of Upconversion Luminescence in Colloidal Nanorod Suspensions},
author = {Park, Sungoh and Mundoor, Haridas and Fleury, Blaise and Davidson, Patrick and van de Lagemaat, Jao and Smalyukh, Ivan I.},
abstractNote = {The polarization-dependent photon upconversion luminescence properties of large-scale orientationally ordered soft matter systems formed by colloidal nanorods dispersed in an isotropic solvent are studied. The electrostatically charged photon-upconverting nanorods form an isotropic dispersion at low concentrations, whereas orientational order and a nematic phase emerge at high concentrations. When an alternating electric field is applied, particles align in the direction of the electric field in both nematic and isotropic phases, though the nature of this electric switching is different in these two phases. Owing to the long-range orientational order in the nematic phase, the upconversion luminescence from the particles is polarized without an external field. Polarization dependence of these properties can also be electrically induced in an isotropic phase of the colloidal nanorods. Further, the dynamics of switching of photon upconversion luminescence in both nematic and isotropic dispersions are explored and their potential technological uses are discussed.},
doi = {10.1002/adom.201900041},
journal = {Advanced Optical Materials},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {2}
}

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Works referenced in this record:

Controlled Synthesis and Luminescence of Lanthanide Doped NaYF4 Nanocrystals
journal, February 2007

  • Wang, Leyu; Li, Yadong
  • Chemistry of Materials, Vol. 19, Issue 4, p. 727-734
  • DOI: 10.1021/cm061887m