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Rigid Conjugated Twisted Truxene Dimers and Trimers as Electron Acceptors
Author(s) -
Zhang Gang,
Lami Vincent,
Rominger Frank,
Vaynzof Yana,
Mastalerz Michael
Publication year - 2016
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201511532
Subject(s) - conjugated system , homo/lumo , solubility , organic solar cell , organic electronics , electron acceptor , photochemistry , materials science , electron , chemistry , polymer chemistry , crystallography , polymer , organic chemistry , molecule , transistor , physics , quantum mechanics , voltage
Abstract A new class of rigid twisted truxenone oligomers with an enlarged π backbone has been established by oxidative dimerization reactions. The resulting extended conjugated systems have large extinction coefficients and low‐lying LUMO levels and show good solubility in common organic solvents, thus making them attractive compounds as new electron acceptors in organic electronics. Their suitability as electron acceptors has been demonstrated in bulk‐heterojunction organic solar cells with poly({4,8‐bis[(2‐ethylhexyl)oxy]benzo[1,2‐b:4,5‐b′]dithiophene‐2,6‐diyl}{3‐fluoro‐2‐[(2‐ethylhexyl)carbonyl]thieno[3,4‐b]thiophenediyl}) (PTB7) as the donor material.