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Main Title: Assembly of carbon nanotubes and alkylated fullerenes: nanocarbon hybrid towards photovoltaic applications
Author(s): Shen, Yanfei
Reparaz, Juan Sebastián
Wagner, Markus Raphael
Hoffmann, Axel
Thomsen, Christian
Lee, Jeong-O
Heeg, Sebastian
Hatting, Benjamin
Reich, Stephanie
Saeki, Akinori
Seki, Shu
Yoshida, Kaname
Babu, Sukumaran Santhosh
Möhwald, Helmuth
Nakanishi, Takashi
Type: Article
Language Code: en
Abstract: Taking advantage of the non-covalent interaction between alkyl chains and the sidewalls of a single-walled carbon nanotube (SWCNT), a nanocarbon hybrid of SWCNT and a fullerene (C60) derivative with long alkyl chains was constructed as a donor–acceptor pair for photovoltaics and nanodevice investigations. It was found that SWCNT could be mostly unbundled by the alkylated C60 (1) and was well-dispersed in organic solvents. As a photoactive material, the resultant nanocarbon hybrid, 1-SWCNT, performed well in light-energy harvesting applications in photoelectrochemical cells and nanoscale field-effect transistors (FET). Moreover, the 1-SWCNT assembly exhibited superhydrophobicity, providing an interesting opportunity to fabricate nanocarbon-based waterproof optoelectronic devices. In order to understand the photoexcitation process, the 1-SWCNT assembly was electrochemically and spectroscopically characterized. The electrochemical results showed that the SWCNT facilitated electronic communication between 1 and the electrode. The steady-state and time-resolved fluorescence and the photoluminescence excitation studies suggested efficient quenching of the singlet excited state of C60. Nanosecond transient absorption data revealed the one-electron reduction of fullerene, C60˙−, thereby demonstrating the photoinduced electron transfer from SWCNT to the C60 unit in the 1-SWCNT assembly.
Issue Date: 2011
Date Available: 30-Jun-2016
DDC Class: 540 Chemie und zugeordnete Wissenschaften
Sponsor/Funder: DFG, EXC 314, Unifying Concepts in Catalysis
Journal Title: Chemical science
Publisher: Royal Society of Chemistry
Publisher Place: Cambridge
Volume: 2
Issue: 11
Publisher DOI: 10.1039/c1sc00360g
Page Start: 2243
Page End: 2250
EISSN: 2041-6539
ISSN: 2041-6520
Notes: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
Appears in Collections:Inst. Festkörperphysik » Publications

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