Journal
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
Volume 2016, Issue 19, Pages 3233-3242Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.201600406
Keywords
Diketopyrrolopyrroles; Low band-gap; Polymers; Cross-coupling; Oligoether chains; Donor-acceptor systems; Pi interactions
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Funding
- Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR)
- Universita degli Studi di Bari Aldo Moro [prot. 2012A4Z2RY, PON02_00563_3316357, PON03PE_00004_1]
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We report herein general synthetic routes to novel TEG-functionalized DPP-based co-polymers (TEG = triethylene glycol; DPP = diketopyrrolopyrrole) that display alternating TEG-substituted DPP moieties with various functionalized donor units; donor units contain moieties such as polythiophene segments decorated with thermocleavable tertiary esters or additional TEG chains and alkoxy-substituted benzodithiophenes. The synthetic approaches are based on Stille coupling chemistry or, for the first time for TEG-substituted DPP-based polymers, on direct heteroarylation polymerizations. Spectroscopic and electrochemical characterization as well as preliminary tests in photovoltaic cells are also reported.
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