Mono- and bis(pyrrolo)tetrathiafulvalene derivatives tethered to C60: synthesis, photophysical studies, and self-assembled monolayers

Marta Vico Solano, Eduardo Antonio Della Pia, Martyn Jevric, Christina Schubert, Xintai Wang, Cornelia van der Pol, Anders Kadziola, Kasper Nørgaard, Dirk M. Guldi, Mogens Brøndsted Nielsen, Jan Oskar Jeppesen

14 Citations (Scopus)

Abstract

A series of mono- (MPTTF) and bis(pyrrolo)tetrathiafulvalene (BPTTF) derivatives tethered to one or two C60 moieties was synthesized and characterized. The synthetic strategy for these dumbbell-shaped compounds was based on a 1,3-dipolar cycloaddition reaction between aldehyde-functionalized MPTTF/BPTTF derivatives, two different tailor-made amino acids, and C 60. Electronic communication between the MPTTF/BPTTF units and the C60 moieties was studied by a variety of techniques including cyclic voltammetry and absorption spectroscopy. These solution-based studies indicated no observable electronic communication between the MPTTF/BPTTF units and the C60 moieties. In addition, femtosecond and nanosecond transient absorption spectroscopy revealed, rather surprisingly, that no charge transfer from the MPTTF/BPTTF units to the C60 moieties takes place on excitation of the fullerene moiety. Finally, it was shown that the MPTTF-C 60 and C60-BPTTF-C60 dyad and triad molecules formed self-assembled monolayers on a Au(111) surface by anchoring to C 60.

Original languageEnglish
JournalChemistry: A European Journal
Volume20
Issue number32
Pages (from-to)9918-9929
Number of pages12
ISSN0947-6539
DOIs
Publication statusPublished - 4 Aug 2014

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