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C60 dimers connected through pleiadene bridges: Fullerenes talking to each other

Title
C60 dimers connected through pleiadene bridges: Fullerenes talking to each other
Authors
Sastre-Santos A.Parejo C.Martin-Gomis L.Ohkubo K.Fernandez-Lazaro F.Fukuzumi S.
Ewha Authors
Shunichi Fukuzumi
SCOPUS Author ID
Shunichi Fukuzumiscopus
Issue Date
2011
Journal Title
Journal of Materials Chemistry
ISSN
0959-9428JCR Link
Citation
vol. 21, no. 5, pp. 1509 - 1515
Indexed
SCOPUS WOS scopus
Abstract
New C60 dimers 1, 2 and 3 that differ in the distance between the two balls, connected through pleiadene bridges have been synthesized. Different synthetic strategies have been used to prepare C60 dimers 1-3. A diastereoisomeric mixture was obtained for C60 dimer 1, which was separated by column chromatography and characterized by NMR. By CV measurements, no interaction between the two balls was found in the ground state in any type of C60 dimer. By reduction with dimeric benzylnicotinamide [(BNA)2], a two electron reductant, the interaction between both C60 units has been analyzed using electron paramagnetic resonance (EPR). For C60 dimer 3, upon addition of 1 equivalent (BNA)2 no electronic interaction in the C 60 --C60 - was observed due to the long distance between the C60 balls (20 Å). However, for C 60 dimer 1, where the distance between radicals is shorter, 10 Å, the electronic interaction in the di(radical anion), C 60 --C60 - in the presence of 1 equivalent of (BNA)2 was observed by EPR, corresponding to a triplet biradical. © 2011 The Royal Society of Chemistry.
DOI
10.1039/c0jm02635b
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자연과학대학 > 화학·나노과학전공 > Journal papers
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