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Effects of Anthryl Groups on the Charge Transport and Photovoltaic Properties of Small Triarylamine‐Based Donor‐Acceptor Molecules: A Joint Experimental and Theoretical Study
Author(s) -
Jiang Yue,
Cabanetos Clément,
Jungsuttiwong Siriporn,
Alberga Domenico,
Adamo Carlo,
Roncali Jean
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201701305
Subject(s) - triphenylamine , acceptor , cyclic voltammetry , molecule , materials science , photochemistry , homo/lumo , small molecule , planar , heterojunction , organic solar cell , chemistry , electrochemistry , electrode , optoelectronics , polymer , organic chemistry , physics , computer graphics (images) , computer science , condensed matter physics , biochemistry , composite material
Abstract The 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.