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Triptycene–Bis(aroyleneimidazole)s as Non‐Fullerene Acceptors: The Missing Links
Author(s) -
Menke Elisabeth H.,
Leibold David,
Berger Felix J.,
Rominger Frank,
Vaynzof Yana,
Mastalerz Michael
Publication year - 2017
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201700428
Subject(s) - triptycene , fullerene , organic solar cell , photovoltaic system , materials science , energy conversion efficiency , photovoltaics , chemistry , photochemistry , nanotechnology , organic chemistry , optoelectronics , polymer , electrical engineering , engineering
The syntheses of four triptycene‐bis(aroyleneimidazole)s—the missing links with respect to the previously reported triptycene–mono(aroyleneimidazole)s and triptycene–tris(aroyleneimidazole)s—are presented. Their optoelectronic properties and use as non‐fullerene acceptors in organic photovoltaics 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 a donor are described; these systems reach a maximum power conversion efficiency of 2 %. Furthermore, the effect of molecular symmetry on the photovoltaic device performance is discussed.