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Title: Enhanced photophysics of conjugated polymers

Abstract

The addition of oppositely charged surfactant to fluorescent ionic conjugated polymer forms a polymer-surfactant complex that exhibits at least one improved photophysical property. The conjugated polymer is a fluorescent ionic polymer that typically has at least one ionic side chain or moiety that interacts with the specific surfactant selected. The photophysical property improvements may include increased fluorescence quantum efficiency, wavelength-independent emission and absorption spectra, and more stable fluorescence decay kinetics. The complexation typically occurs in a solution of a polar solvent in which the polymer and surfactant are soluble, but it may also occur in a mixture of solvents. The solution is commonly prepared with a surfactant molecule:monomer repeat unit of polymer ratio ranging from about 1:100 to about 1:1. A polymer-surfactant complex precipitate is formed as the ratio approaches 1:1. This precipitate is recoverable and usable in many forms.

Inventors:
 [1];  [2];  [3];  [3]
  1. Argonne, IL
  2. Santa Clara, CA
  3. Santa Fe, NM
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
921801
Patent Number(s):
6569952
Application Number:
09/947,192
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Classifications (CPCs):
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Chen, Liaohai, Xu, Su, McBranch, Duncan, and Whitten, David. Enhanced photophysics of conjugated polymers. United States: N. p., 2003. Web.
Chen, Liaohai, Xu, Su, McBranch, Duncan, & Whitten, David. Enhanced photophysics of conjugated polymers. United States.
Chen, Liaohai, Xu, Su, McBranch, Duncan, and Whitten, David. Tue . "Enhanced photophysics of conjugated polymers". United States. https://www.osti.gov/servlets/purl/921801.
@article{osti_921801,
title = {Enhanced photophysics of conjugated polymers},
author = {Chen, Liaohai and Xu, Su and McBranch, Duncan and Whitten, David},
abstractNote = {The addition of oppositely charged surfactant to fluorescent ionic conjugated polymer forms a polymer-surfactant complex that exhibits at least one improved photophysical property. The conjugated polymer is a fluorescent ionic polymer that typically has at least one ionic side chain or moiety that interacts with the specific surfactant selected. The photophysical property improvements may include increased fluorescence quantum efficiency, wavelength-independent emission and absorption spectra, and more stable fluorescence decay kinetics. The complexation typically occurs in a solution of a polar solvent in which the polymer and surfactant are soluble, but it may also occur in a mixture of solvents. The solution is commonly prepared with a surfactant molecule:monomer repeat unit of polymer ratio ranging from about 1:100 to about 1:1. A polymer-surfactant complex precipitate is formed as the ratio approaches 1:1. This precipitate is recoverable and usable in many forms.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {5}
}

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