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Issue 39, 2010
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Surface modification of semiconductor nanocrystals by a methanofullerene carboxylic acid

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Abstract

We report, for the first time, on successful binding of a fullerene derivative, namely 3,4-dihexyloxyphenyl-C61-butyric-acid (dPCBA) to PbS and CdSe nanocrystals (NCs). This molecule is an excellent candidate to serve as electroactive ligand for NCs and form novel complexes, which could be very promising building blocks for optoelectronic devices. The surface modification phenomenon was followed by steady-state and time-resolved photoluminescence (PL) experiments. The dramatic PL quenching in the case of both NCs indicates photoinduced charge transfer from NCs to dPCBA molecules as a result of effective coordination of dPCBA to the NC surface. The electrically active nature of the new complexes is proven by current–voltage measurements on thin films of the NC-dPCBA complexes.

Graphical abstract: Surface modification of semiconductor nanocrystals by a methanofullerene carboxylic acid

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Publication details

The article was received on 20 Jul 2010, accepted on 18 Aug 2010 and first published on 31 Aug 2010


Article type: Communication
DOI: 10.1039/C0JM02347G
Citation: J. Mater. Chem., 2010,20, 8470-8473
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    Surface modification of semiconductor nanocrystals by a methanofullerene carboxylic acid

    K. Szendrei, D. Jarzab, M. Yarema, M. Sytnyk, S. Pichler, J. C. Hummelen, W. Heiss and M. A. Loi, J. Mater. Chem., 2010, 20, 8470
    DOI: 10.1039/C0JM02347G

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