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Issue 12, 2015
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A carbon–carbon hybrid – immobilizing carbon nanodots onto carbon nanotubes

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Abstract

The thrust of this work is to integrate small and uniformly sized carbon nanodots (CNDs) with single-walled carbon nanotubes (SWCNT) of different diameters as electron donors and electron acceptors, respectively, and to test their synergetic interactions in terms of optoelectronic devices. CNDs (denoted pCNDs, where p indicates pressure) were prepared by pressure-controlled microwave decomposition of citric acid and urea. pCNDs were immobilized on single-walled carbon nanotubes by wrapping the latter with poly(4-vinylbenzyl trimethylamine) (PVBTA), which features positively charged ammonium groups in the backbone. Negatively charged surface groups on the CNDs lead to attractive electrostatic interactions. Ground state interactions between the CNDs and SWCNTs were confirmed by a full-fledged photophysical investigation based on steady-state and time-resolved techniques. As a complement, charge injection into the SWCNTs upon photoexcitation was investigated by ultra-short time-resolved spectroscopy.

Graphical abstract: A carbon–carbon hybrid – immobilizing carbon nanodots onto carbon nanotubes

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Publication details

The article was received on 27 Jul 2015, accepted on 18 Aug 2015 and first published on 20 Aug 2015


Article type: Edge Article
DOI: 10.1039/C5SC02728D
Citation: Chem. Sci., 2015,6, 6878-6885
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    A carbon–carbon hybrid – immobilizing carbon nanodots onto carbon nanotubes

    V. Strauss, J. T. Margraf, T. Clark and D. M. Guldi, Chem. Sci., 2015, 6, 6878
    DOI: 10.1039/C5SC02728D

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