Poly(thiophene) nanoparticles prepared by Fe3+-catalyzed oxidative polymerization: A size-dependent effect on photoluminescence property

Sun Jong Lee, Jung Min Lee, Hak Ze Cho, Won-Gun Koh, In Woo Cheong, Jung-Hyun Kim

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Poly(thiophene) (PTh) nanoparticles with various sizes were directly prepared by Fe3+-catalyzed oxidative polymerization of thiophene with varying hydrogen peroxide (H2O2) concentrations. In the polymerization, the FeCl3/H2O2 (catalyst/oxidant) combination system was used as an initiator couple. Under the optimized reaction condition, percentage monomer conversions were >90%. With increasing H2O2 molar concentration from 2.35 to 5.88 M, the average sizes of the PTh nanoparticles decreased from. 51 to 12 nm, and their photoemission wavelengths shifted from red to blue color at the maximum excitation wavelength (λUVmax = 400 nm). However, the molecular weights of all PTh nanoparticles were ∼3500 g/mol. As a result, we could tune the emitting colors that resulted from variations of the effective conjugation chain length by manipulating the size of PTh nanoparticles.

Original languageEnglish
Pages (from-to)2484-2489
Number of pages6
JournalMacromolecules
Volume43
Issue number5
DOIs
Publication statusPublished - 2010 Mar 9

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Thiophenes
Thiophene
Photoluminescence
Polymerization
Nanoparticles
Initiators (chemical)
Color
Wavelength
Photoemission
Chain length
Oxidants
Hydrogen peroxide
Hydrogen Peroxide
Monomers
Molecular weight
Catalysts

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

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Poly(thiophene) nanoparticles prepared by Fe3+-catalyzed oxidative polymerization : A size-dependent effect on photoluminescence property. / Lee, Sun Jong; Lee, Jung Min; Cho, Hak Ze; Koh, Won-Gun; Cheong, In Woo; Kim, Jung-Hyun.

In: Macromolecules, Vol. 43, No. 5, 09.03.2010, p. 2484-2489.

Research output: Contribution to journalArticle

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AU - Lee, Sun Jong

AU - Lee, Jung Min

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AU - Kim, Jung-Hyun

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AB - Poly(thiophene) (PTh) nanoparticles with various sizes were directly prepared by Fe3+-catalyzed oxidative polymerization of thiophene with varying hydrogen peroxide (H2O2) concentrations. In the polymerization, the FeCl3/H2O2 (catalyst/oxidant) combination system was used as an initiator couple. Under the optimized reaction condition, percentage monomer conversions were >90%. With increasing H2O2 molar concentration from 2.35 to 5.88 M, the average sizes of the PTh nanoparticles decreased from. 51 to 12 nm, and their photoemission wavelengths shifted from red to blue color at the maximum excitation wavelength (λUVmax = 400 nm). However, the molecular weights of all PTh nanoparticles were ∼3500 g/mol. As a result, we could tune the emitting colors that resulted from variations of the effective conjugation chain length by manipulating the size of PTh nanoparticles.

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