title: Supramolecular hybrid of gold nanoparticles and semiconducting single-walled carbon nanotubes wrapped by a porphyrin-fluorene copolymer.
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 ~10(5). The transport properties of the TFT changed after coordination of the AuNPs with the SWNTs/copolymer 1.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, Motooka744, Nishi-ku, Fukuoka 819-0395, Japan.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Ozawa
authors.forename: Xun
authors.initials: X
authors.lastname: Yi
authors.forename: Tsuyohiko
authors.initials: T
authors.lastname: Fujigaya
authors.forename: Yasuro
authors.initials: Y
authors.lastname: Niidome
authors.forename: Tanemasa
authors.initials: T
authors.lastname: Asano
authors.forename: Naotoshi
authors.initials: N
authors.lastname: Nakashima