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:
-
- Argonne, IL
- Santa Clara, CA
- Santa Fe, NM
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (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 = {Tue May 27 00:00:00 EDT 2003},
month = {Tue May 27 00:00:00 EDT 2003}
}
Works referenced in this record:
Surfactant-induced modification of quenching of conjugated polymer fluorescence by electron acceptors: applications for chemical sensing
journal, November 2000
- Chen, Liaohai; McBranch, Duncan; Wang, Rong
- Chemical Physics Letters, Vol. 330, Issue 1-2