Self-assembled architectures with segregated donor and acceptor units of a dyad based on a monopyrrolo-annulated TTF-PTM radical.

Autor: Souto M; Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de Bellaterra, 08193 Barcelona (Spain)., Solano MV; Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, 5230 Odense M (Denmark)., Jensen M; Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, 5230 Odense M (Denmark)., Bendixen D; Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, 5230 Odense M (Denmark)., Delchiaro F; Dipartimento di Chimica, Parma University/INSTM-UdR Parma, 43124 Parma (Italy)., Girlando A; Dipartimento di Chimica, Parma University/INSTM-UdR Parma, 43124 Parma (Italy)., Painelli A; Dipartimento di Chimica, Parma University/INSTM-UdR Parma, 43124 Parma (Italy)., Jeppesen JO; Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, 5230 Odense M (Denmark)., Rovira C; Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de Bellaterra, 08193 Barcelona (Spain)., Ratera I; Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de Bellaterra, 08193 Barcelona (Spain)., Veciana J; Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de Bellaterra, 08193 Barcelona (Spain). vecianaj@icmab.es.
Jazyk: angličtina
Zdroj: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2015 Jun 08; Vol. 21 (24), pp. 8816-25. Date of Electronic Publication: 2015 May 01.
DOI: 10.1002/chem.201500497
Abstrakt: An electron donor-acceptor dyad based on a polychlorotriphenylmethyl (PTM) radical subunit linked to a tetrathiafulvalene (TTF) unit through a π-conjugated N-phenyl-pyrrole-vinylene bridge has been synthesized and characterized. The intramolecular electron transfer process and magnetic properties of the radical dyad have been evaluated by cyclic voltammetry, UV/Vis spectroscopy, vibrational spectroscopy, and ESR spectroscopy in solution and in the solid state. The self-assembling abilities of the radical dyad and of its protonated non-radical analogue have been investigated by X-ray crystallographic analysis, which revealed that the radical dyad produced a supramolecular architecture with segregated donor and acceptor units in which the TTF subunits were arranged in 1D herringbone-type stacks. Analysis of the X-ray data at different temperatures suggests that the two inequivalent molecules that form the asymmetric unit of the crystal of the radical dyad evolve into an opposite degree of electronic delocalization as the temperature decreases.
(© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)
Databáze: MEDLINE
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