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Photochemical site-selective synthesis of [70]methanofullerenes

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Vidal, Sara and Izquierdo, Marta and Kit Law, Wai and Jiang, Kui and Filippone, Salvatore and Perles, Josefina and Yan, He and Martín, Nazario (2016) Photochemical site-selective synthesis of [70]methanofullerenes. Chemical Communications, 52 . pp. 12733-12736. ISSN 1359-7345

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Official URL: http://pubs.rsc.org/en/content/articlepdf/2016/cc/c6cc06072b



Abstract

Methanofullerenes such as the well-known [70]PCBM are commonly synthesized under harsh conditions to obtain the product as a mixture of site-isomers (namely a, b and minor c) due to the D5h symmetry of the C70 cage. We report the first site-selective synthesis of [70]methanofullerenes under light irradiation and low temperatures, thus avoiding time-consuming and highly expensive HPLC separations. Pure major site-isomers a-[70]PCBM and a-[70]DPM have been thus efficiently prepared including the crystal structure of 5b. Photovoltaic preliminary results revealed a slightly beneficial performance for a-pure [70]PCBM site-isomer devices.


Item Type:Article
Uncontrolled Keywords:crystal structure; irradiation; isomer; low temperature; synthesis
Subjects:Sciences > Chemistry > Chemistry, Organic
ID Code:41726
Deposited On:08 Mar 2017 11:45
Last Modified:01 Nov 2017 00:01

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