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Novel photovoltaic polymers constructed from alternative donor and acceptor units having one mother structure

This work presents a new strategy for the preparation of donor–acceptor conjugated copolymers, in which both donor and acceptor units derive from one mother structure. Benzo[1,2-b:4,5-b′]dithiophene-4,8-dione (BQDT) is an electron-deficient unit. From BQDT, benzo[1,2-b:4,5-b′]dithiophene (BDT) and b... Full description

Contained in: Polymer. The international Journal for the Science and Technology of Polymers and Biopolymers Vol. 54, No. 9 (2013), p. 2278-2284
Journal Title: Polymer. The international Journal for the Science and Technology of Polymers and Biopolymers
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Links: Additional Link (dx.doi.org)
Additional Keywords: ABSORPTIONSSPEKTRUM
BUTTERSAEUREESTER
COPOLYMER
ELEKTRON
ENERGIEUMWANDLUNG
HETEROUEBERGANG
ORGANISCHE-SOLARZELLE
ORGANISCHER-HALBLEITER
SOLARZELLE
STOFFGEMISCH
DOI: 10.1016/j.polymer.2013.02.036
Notes: Copyright: Metadaten: TEMA, Copyright WTI-Frankfurt eG
Copyright: (C) Alle Rechte beim Herausgeber
Physical Description: 7 Seiten, 25 Quellen
ID (e.g. DOI, URN): 10.1016/j.polymer.2013.02.036
PPN (Catalogue-ID): WTI054359880
Note: WTI TEMA DB
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520 |a This work presents a new strategy for the preparation of donor–acceptor conjugated copolymers, in which both donor and acceptor units derive from one mother structure. Benzo[1,2-b:4,5-b′]dithiophene-4,8-dione (BQDT) is an electron-deficient unit. From BQDT, benzo[1,2-b:4,5-b′]dithiophene (BDT) and benzo[1,2-b:4,5-b′]dithiophene-4,8-dione dioxime (BXDT) can be easily derived and serve as electron-donating and another electron-accepting unit, respectively. Based on these three units, poly(BDT-alt-BQDT) (PBQ-C24, with 2-decyltetradecyl side chains) and poly(BDT-alt-BXDT) (PBX-C8, with 2-ethylhexyl side chains) have been designed and synthesized. Their thermal, optical and electrochemical properties have been investigated. PBQ-C24 has a broad absorption spectrum in the range of 300–700 nm, while PBX-C8 can only harvest the light from 300 to 600 nm. However, the bulk heterojunction cell based on the blend of PBX-C8 and [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) displays a better performance with a power conversion efficiency of 0.51%. [Copyright Elsevier B.V. Reproduced with permission.] 
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