Organic-skinned inorganic nanoparticles: surface-confined polymerization of 6-(3-thienyl) hexanoic acid bound to nanocrystalline TiO 2

Viswanathan S. Saji, Yimhyun Jo, Hoi Ri Moon, Yongseok Jun, Hyun Kon Song

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

There are many practical difficulties in direct adsorption of polymers onto nanocrystalline inorganic oxide surface such as Al 2O 3 and TiO 2 mainly due to the insolubility of polymers in solvents or polymer agglomeration during adsorption process. As an alternative approach to the direct polymer adsorption, we propose surface-bound polymerization of pre-adsorbed monomers. 6-(3-Thienyl)hexanoic acid (THA) was used as a monomer for poly[3-(5- carboxypentyl)thiophene-2,5-diyl] (PTHA). PTHA-coated nanocrystalline TiO 2/FTO glass electrodes were prepared by immersing THA-adsorbed electrodes in FeCl 3 oxidant solution. Characterization by ultraviolet/visible/infrared spectroscopy and thermal analysis showed that the monolayer of regiorandom-structured PTHA was successfully formed from intermolecular bonding between neighbored THA surface-bound to TiO 2. The anchoring functional groups (-COOH) of the surface-crawling PTHA were completely utilized for strong bonding to the surface of TiO 2.

Original languageEnglish
Article number521
Pages (from-to)1-5
Number of pages5
JournalNanoscale Research Letters
Volume6
DOIs
Publication statusPublished - 2011
Externally publishedYes

Keywords

  • Fecl
  • Nanocrystalline TiO
  • Surface-bound polymerization
  • Thiophenes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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