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Novel Conjugated Polymer/Silica Nanocomposites with Tunable Mesostructure Synthesized by a Robust Pd Catalyst

Published online by Cambridge University Press:  10 February 2011

Byron McCaughey
Affiliation:
300 Lindy Boggs, Chemical Engineering Department, Tulane University, New Orleans, LA 70118
Chris Costello
Affiliation:
2015 Percival Stern, Chemistry Department, Tulane University, New Orleans, LA 70118
J. Eric Hampsey
Affiliation:
300 Lindy Boggs, Chemical Engineering Department, Tulane University, New Orleans, LA 70118
Donghai Wang
Affiliation:
300 Lindy Boggs, Chemical Engineering Department, Tulane University, New Orleans, LA 70118
Chaojun Li
Affiliation:
2015 Percival Stern, Chemistry Department, Tulane University, New Orleans, LA 70118
Yunfeng Lu
Affiliation:
300 Lindy Boggs, Chemical Engineering Department, Tulane University, New Orleans, LA 70118
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Abstract

Conjugated poly(2,5-thienylene ethynylene) (PTE)/silica nanocomposites with cubic and lamellar mesostructures have been synthesized. Surfactant directed assembly coorganized 2,5-diiodothiophene monomer and palladium-based catalyst within a silica matrix. Subsequent polymerization initiated by exposing the monomer/catalyst/silica nanostructures to acetylene gas resulted in the formation of an ordered, mesostructured poly(2,5-thienylene ethynylene)/silica nanocomposite as determined by XRD, UV-vis, FTIR, and TEM experiments. Mesostructured PTE with 287m2/g surface area is obtained after silica removal. Further polymerization of PTE oligomers occurs after exposure to acetylene gas due to active Pd catalyst attached to the polymer chains. This novel approach provides a unique route to synthesize mesostructured conjugated polymer/inorganic nanocomposites and porous mesostructured PTE.

Type
Research Article
Copyright
Copyright © Materials Research Society 2003

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