期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 33, 期 22, 页码 1927-1932出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201200368
关键词
direct arylation; low-bandgap conjugated polymers; organic photovoltaics; PCPDTBT
资金
- National Science Council of Taiwan
- Bangor University
Low-bandgap conjugated copolymers based on a donoracceptor structure have been synthesised via palladium-complex catalysed direct arylation polymerisation. Initially, we report the optimisation of the synthesis of poly(cyclopentadithiophene-alt-benzothiadiazole) (PCPDTBT) formed between cyclopentadithiophene and dibromobenzothiadiazole units. The polymerisation condition has been optimised, which affords high-molecular-weight polymers of up to Mn = 70 k using N-methylpyrrolidone as a solvent. The polymers are used to fabricate organic photovoltaic devices and the best performing PCPDTBT device exhibits a moderate improvement over devices fabricated using the related polymer via Suzuki coupling. Similar polymerisation conditions have also been applied for other monomer units.
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