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Title: Liquid crystal-templated conducting organic polymers

Abstract

A method of preparing a conductive polymeric film, includes providing a liquid crystal phase comprising a plurality of hydrophobic cores, the phase on a substrate, introducing a hydrophobic component to the phase, the component a conductive polymer precursor, and applying an electric potential across the liquid crystal phase, the potential sufficient to polymerize the said precursor.

Inventors:
;
Publication Date:
Research Org.:
Northwestern Univ., Evanston, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1174693
Patent Number(s):
6,680,215
Application Number:
10/272,707
Assignee:
Northwestern University (Evanston, IL) OSTI
DOE Contract Number:
FG02-00ER45810
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Stupp, Samuel I., and Hulvat, James F. Liquid crystal-templated conducting organic polymers. United States: N. p., 2004. Web.
Stupp, Samuel I., & Hulvat, James F. Liquid crystal-templated conducting organic polymers. United States.
Stupp, Samuel I., and Hulvat, James F. 2004. "Liquid crystal-templated conducting organic polymers". United States. doi:. https://www.osti.gov/servlets/purl/1174693.
@article{osti_1174693,
title = {Liquid crystal-templated conducting organic polymers},
author = {Stupp, Samuel I. and Hulvat, James F.},
abstractNote = {A method of preparing a conductive polymeric film, includes providing a liquid crystal phase comprising a plurality of hydrophobic cores, the phase on a substrate, introducing a hydrophobic component to the phase, the component a conductive polymer precursor, and applying an electric potential across the liquid crystal phase, the potential sufficient to polymerize the said precursor.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2004,
month = 1
}

Patent:

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  • According to the present invention, an improved method of coating electrodes with conductive polymer films and/or preselected catalysts is provided. The charge-conductive polymer is covalently or coordinatively attached to the electrode surface to strengthen the adhesion characteristics of the polymer to the electrode surface or to improve charge-conductive properties between the conductive polymer and the electrode surface. Covalent or coordinative attachment is achieved by a number of alternative methods including covalently or coordinatively attaching the desired monomer to the electrode by means of a suitable coupling reagent and, thereafter, electrochemically polymerizing the monomer in situ.
  • According to the present invention, an improved method of coating electrodes with conductive polymer films and/or preselected catalysts is provided. The charge conductive polymer is covalently or coordinatively attached to the electrode surface to strengthen the adhesion characteristics of the polymer to the electrode surface or to improve charge conductive properties between the conductive polymer and the electrode surface. Covalent or coordinative attachment is achieved by a number of alternative methods including covalently or coordinatively attaching the desired monomer to the electrode by means of a suitable coupling reagent and, thereafter, electrochemically polymerizing the monomer in situ.
  • According to the present invention, an improved method of coating electrodes with conductive polymer films and/or preselected catalysts is provided. The charge-conductive polymer is covalently or coordinatively attached to the electrode surface to strengthen the adhesion characteristics of the polymer to the electrode surface or to improve charge-conductive properties between the conductive polymer and the electrode surface. Covalent or coordinative attachment is achieved by a number of alternative methods including covalently or coordinatively attaching the desired monomer to the electrode by means of a suitable coupling reagent and, thereafter, electrochemically polymerizing the monomer in situ.
  • Characteristics of various electrochemical light-emitting devices having a configuration such as, for example, Al/MEH-PPV+TBATS/ITO (where TBATS = tetrabutylammonium p-toluenesulfonate) are reported and compared with similar devices using different electrolytes and different electrode materials. Flexible, {open_quotes}completely organic{close_quotes} polymer dispersed liquid crystal light valves have been fabricated from transparent plastic substrates on which a conducting film of polypyrrole has been deposited from an aqueous solution of polymerizing pyrrole. A new concept, {open_quotes}microcontact printing{close_quotes}, is investigated for patterning polypyrrole deposited on plastic and glass substrates. The smallest polypyrrole features produced to date have {approximately}20-30 {mu}m dimensions. The electronic spectra of the polypyrrole ismore » critically dependent on the degree of hydrophilicity/hydrophobicity of the substrate surface.« less
  • A novel metal-organic framework (MOF) templated process for the synthesis of highly porous inorganic sorbents for removing radionuclides, actinides, and heavy metals is disclosed. The highly porous nature of the MOFs leads to highly porous inorganic sorbents (such as oxides, phosphates, sulfides, etc) with accessible surface binding sites that are suitable for removing radionuclides from high level nuclear wastes, extracting uranium from acid mine drainage and seawater, and sequestering heavy metals from waste streams. In some cases, MOFs can be directly used for removing these metal ions as MOFs are converted to highly porous inorganic sorbents in situ.