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Oligothiophene cruciform with a Germanium spiro center: A promising material for organic photovoltaics
journal contributionposted on 16.06.2017, 08:40 authored by Iain Wright, Alexander L. Kanibolotsky, Joseph Cameron, Tell Tuttle, Peter J. Skabara, Simon J. Coles, Calvyn T. Howells, Stuart A. J. Thomson, Salvatore Gambino, Ifor D. W. Samuel
X marks the spot! A fascinating packing motif is observed in a novel cruciform oligothiophene containing a Ge (violet; see picture) spiro center. Long-range interchain interactions between molecules and strong electronic coherence between orthogonal chains within the molecules are present. Such ordering is advantageous for bulk charge transport, as demonstrated by high short-circuit currents in bulk heterojunction organic solar cells. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.