Abstract
AbstractThe effects of replacing one of the outer phenyl rings of triphenylamine by 2‐anthryl and 9‐anthryl groups of triphenylamine (TPA) have been investigated on two small push‐pull molecules consisting of a triarylamine donor block connected to a dicyanovinyl acceptor via a thienyl spacer. UV‐Vis absorption, cyclic voltammetry and theoretical calculations show that the mode of linkage of the anthryl group has a limited influence on the electronic properties of the molecule compared to reference compound based on TPA. However experimental and theoretical results show that this simple structural modification exerts a major impact on the hole‐mobility of the resulting materials and thus on their efficiency as donor in planar heterojunction solar cells.
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