Dicyclopenta[cd,jk]pyrene based acceptors in conjugated polymersElectronic supplementary information (ESI) available. See DOI: 10.1039/c5py01582k

A series of reduced band gap donor-acceptor copolymers that contain electron accepting 1,2,6,7-tetra(4-dodecylphenyl)dicyclopenta[ cd , jk ]pyrene were prepared. The hydrocarbon acceptor relies on its cyclopenta-fused polycyclic aromatic hydrocarbon (CP-PAH) character to access a relatively reduced...

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Main Authors: Bheemireddy, Sambasiva R, Plunkett, Kyle N
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Summary:A series of reduced band gap donor-acceptor copolymers that contain electron accepting 1,2,6,7-tetra(4-dodecylphenyl)dicyclopenta[ cd , jk ]pyrene were prepared. The hydrocarbon acceptor relies on its cyclopenta-fused polycyclic aromatic hydrocarbon (CP-PAH) character to access a relatively reduced lowest unoccupied molecular orbital. The donor unit was varied between thiophene, bithiophene, and 1,4-diethynyl-2,5-bis(octyloxy)-benzene producing polymers with band gaps between 1.69-1.74 eV. The synthetic methodology as well as the optoelectronic properties of the donor-acceptor copolymers, including thin-film absorption and cyclic voltammetry, are presented. Reduced band gap materials via cyclopenta-fused polycyclic aromatic hydrocarbon inclusion in donor-acceptor copolymers.
ISSN:1759-9954
1759-9962
DOI:10.1039/c5py01582k