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 journalArticlepeer-review

39 Citations (Scopus)


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
Issue number5
Publication statusPublished - 2010 Mar 9

All Science Journal Classification (ASJC) codes

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


Dive into the research topics of 'Poly(thiophene) nanoparticles prepared by Fe<sup>3+</sup>-catalyzed oxidative polymerization: A size-dependent effect on photoluminescence property'. Together they form a unique fingerprint.

Cite this