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Donor‐acceptor copolymers from cyclopentannulation polymerizations with dicyclopenta[cd,jk]pyrene and dicyclopenta[cd,lm] perylene acceptors
Author(s) -
Uddin Ain,
Plunkett Kyle N.
Publication year - 2020
Publication title -
journal of polymer science
Language(s) - English
Resource type - Journals
eISSN - 2642-4169
pISSN - 2642-4150
DOI - 10.1002/pol.20200522
Subject(s) - perylene , thiophene , acceptor , copolymer , polymer chemistry , cyclic voltammetry , photochemistry , pyrene , polymerization , chemistry , polymer , materials science , molecule , organic chemistry , electrochemistry , physics , electrode , condensed matter physics
A series of donor‐acceptor copolymers with dicyclopenta[cd,jk]pyrene and dicyclopenta[cd,lm]perylene acceptor units was prepared via palladium catalyzed cyclopenta‐annulation reactions. The acceptor units were paired with diethynyl containing donor groups based on benzo[1,2‐b:4,5‐b’]dithiophene, thieno[3,2‐b]thiophene, and 4‐octyl‐4H‐dithieno[3,2‐b:2′,3′‐d]pyrrole to create six polymer variants. The cyclopentannulation polymerization resulted in copolymers with molecular weights (Mn) of 6–14 kDa and broad light absorption in the visible region with band gaps of 1.38–1.85 eV. The synthetic methodology, as well as optoelectronic properties, including thin‐film absorption and cyclic voltammetry, of the donor‐acceptor copolymers are presented.