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Issue 1, 2013
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Synthesis and properties of all-benzene carbon nanocages: a junction unit of branched carbon nanotubes

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Abstract

The first synthesis of an all-benzene carbon nanocage 1, which represents a junction unit of branched carbon nanotubes, has been achieved. A stepwise assembly of six L-shaped units [cis-di(p-bromophenyl)cyclohexane derivative] and two three-way units (1,3,5-triborylbenzene) by cross-coupling and homocoupling provided the unstrained cyclic precursor. Acid-mediated aromatization of cyclohexane moieties in the precursor resulted in the formation of carbon nanocage 1. Photophysical measurements and DFT studies revealed the unique properties of 1, such as D3 symmetry with degenerate HOMO/HOMO − 1 and LUMO/LUMO + 1, high fluorescence quantum yield (ΦF = 0.87), and a relatively large two-photon absorption cross section (500 GM at 590 nm), which are attractive for various applications.

Graphical abstract: Synthesis and properties of all-benzene carbon nanocages: a junction unit of branched carbon nanotubes

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Publication details

The article was received on 22 Aug 2012, accepted on 25 Aug 2012 and first published on 29 Aug 2012


Article type: Edge Article
DOI: 10.1039/C2SC21322B
Citation: Chem. Sci., 2013,4, 84-88
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    Synthesis and properties of all-benzene carbon nanocages: a junction unit of branched carbon nanotubes

    K. Matsui, Y. Segawa, T. Namikawa, K. Kamada and K. Itami, Chem. Sci., 2013, 4, 84
    DOI: 10.1039/C2SC21322B

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