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An Electron‐Accepting Chromophore Based on Fluorene and Naphthalenediimide Building Blocks for Solution‐Processable Bulk Heterojunction Devices
Author(s) -
Gupta Akhil,
Wang Xizu,
Srivani Doli,
Alford Ben,
Chellappan Vijila,
Bilic Ante,
Patil Hemlata,
Jones Lathe A.,
Bhosale Sidhanath V.,
Sonar Prashant,
Bhosale Sheshanath V.
Publication year - 2015
Publication title -
asian journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.846
H-Index - 44
eISSN - 2193-5815
pISSN - 2193-5807
DOI - 10.1002/ajoc.201500112
Subject(s) - fluorene , moiety , chemistry , chromophore , thermal stability , electron acceptor , heterojunction , solubility , photochemistry , acceptor , polymer chemistry , polymer , chemical engineering , organic chemistry , materials science , optoelectronics , physics , condensed matter physics , engineering
We have designed, synthesized and utilized a new non‐fullerene electron acceptor, 9,9′‐(9,9‐dioctyl‐9 H ‐fluorene‐2,7‐diyl)bis(2,7‐dioctyl‐4‐(octylamino)benzo[ lmn ][3,8]phenanthroline‐1,3,6,8(2 H ,7 H )‐tetraone) ( B2 ), for use in solution‐processable bulk‐heterojunction devices. B2 is based on a central fluorene moiety, which was capped at both ends with an electron‐accepting naphthalenediimide functionality. B2 exhibited excellent solubility (>30 mg mL −1 in chloroform), high thermal and photochemical stability, and appropriate energy levels for use with the classical polymer donor regioregular poly(3‐hexylthiophene). A power conversion efficiency of 1.16 % was achieved for primitive bulk‐heterojunction devices with a high fill factor of approximately 54 %.