Conjugated alternating copolymers containing both donor and acceptor moieties in the main chain
Literature Information
Ming Zhang, Changduk Yang, Ashok K. Mishra, Wojciech Pisula, Gang Zhou, Bruno Schmaltz, Martin Baumgarten, Klaus Müllen
A straightforward synthesis toward two conjugated alternating copolymers consisting of 2,7-linked carbazole donor (2,7-Cz) and ladderized pentaphenylene with diketone bridge (LPPK) acceptor chromophores is reported: the copolymers differ by the repeat unit ratio between the 2,7-Cz and LPPK units within the backbone; energy and charge transfer properties and supramolecular organizations of donor–acceptor moieties in these copolymers have been studied via optical spectroscopy and two-dimensional wide-angle X-ray scattering (2D-WAXS); preliminary results such as the efficient energy and charge transfer and π-stacking character in the solid state suggest that the copolymers are potentially useful for photovoltaic devices.
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