Supramolecular hybrid of gold nanoparticles and semiconducting single-walled carbon nanotubes wrapped by a porphyrin-fluorene copolymer

Hiroaki Ozawa, Xun Yi, Tsuyohiko Fujigaya, Yasuro Niidome, Tanemasa Asano, Naotoshi Nakashima

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

We describe the design, synthesis, and characterization of a supramolecular hybrid of gold nanometals and semiconducting single-walled carbon nanotubes (SWNTs) wrapped by a porphyrin-fluorene copolymer (1), as well as fabrication of a thin-film transistor (TFT) device using the hybrid. Photoluminescence mapping revealed that the copolymer selectively dissolved SWNTs with chirality indices of (8,6), (8,7), (9,7), (7,6), and (7,5); dissolution of (8,6), and (8,7) SWNTs was especially efficient. The solubilized SWNTs were connected to gold nanoparticles (AuNPs) via a coordination bond to prepare a supramolecular hybrid composed of AuNPs/copolymer 1-wrapped SWNTs, which were studied by atomic force and scanning and transmission electron microscopies. A fabricated TFT device using the semiconducting SWNTs/copolymer 1 shows evident p-type transport with an On/Off ratio of ∼105. The transport properties of the TFT changed after coordination of the AuNPs with the SWNTs/copolymer 1.

Original languageEnglish
Pages (from-to)14771-14777
Number of pages7
JournalJournal of the American Chemical Society
Volume133
Issue number37
DOIs
Publication statusPublished - Sep 21 2011

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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