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The extraordinary electrochemistry and the tunability of their energy levels allows the use of fulleropyrazolines in photovoltaics and charge-transfer systems. Here we show that substitution in position 1 tunes photolytic stability; electron-donating groups facilitate 1,3-dipolar cycloreversion to fullerene. This discovery has implications not only for photovoltaic stability but also highlights a potential strategy for photo-controlled fullerene release systems ('photo-caged'/'photo-activated' fullerene).

Original publication

DOI

10.1039/c4cc03859b

Type

Journal article

Journal

Chem Commun (Camb)

Publication Date

21/10/2014

Volume

50

Pages

12297 - 12299