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Two novel indacenodithiophene (IDT) based narrow band-gap polymers (PIDT-BDTDPP and PIDT-TDPP) with pendant diketopyrrolopyrrole (DPP) units onto different main chains were designed and synthesized. The structures and properties of these main chain donor-side chain acceptor D-A copolymers were fully characterized. The PIDT-TDPP with pendant DPP units onto thiophene (T) units exhibited better light-harvesting...
Two novel indacenodithiophene (IDT) based donor-acceptor (D-A) narrow band-gap polymers PIDTBDTID and PIDTBDT(ID)2 were designed and synthesized, where one/two isoindigo (ID) moieties were introduced into the backbone as the acceptor unit. The optical, thermal, electrochemical and photovoltaic properties have been investigated in detail. The PIDTBDTID containing one ID unit exhibited better light-harvesting...
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