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2,6-dibromo-4,4-bis(2-ethylhexyl)-4H-cyclopenta[1,2-b:5,4-b']dithiophene, with two thiophene units confined to one plane, cyclopenta[2,1-b;3,4-b′]dithiophene compounds allow more effective conjugation if embedded into semiconducting polymers which in turn will have a lower band gap. Furthermore, the planar structure will have greater effect on the morphology for the thin film devices to allow a well packed polymer to polymer backbones which will bring the third-dimension into play. Take PCPDTBT for example, the planar structure improves the hole mobility of the device to 1 x 10-3 cm2/Vs.
2,6-dibromo-4,4-bis(2-ethylhexyl)-4Hcyclopenta[1,2-b:5,4-b']dithiophene can be targeted by reacting 4,4-bis(2-ethylhexyl)-4Hcyclopenta[1,2-b:5,4-b']dithiophene with N-Bromosuccinimide in dimethylformamide.
|Molecular weight||560.49 g/mol|
|Classification / Family||Dithiophene, Cyclopentadithiophene, Organic semiconducting materials, Semiconductor synthesis, Building blocks|
|Melting point||No data available|
MSDS Documentation2,6-dibromo-4,4-bis(2-ethylhexyl)-4H-cyclopenta[1,2-b:5,4-b']dithiophene MSDS Sheet
Literature and Reviews
- Cyclopentadithiophene-benzothiadiazole oligomers and polymers; synthesis, characterisation, field-effect transistor and photovoltaic characteristics, M. Horie et al., J. Mater. Chem., 22, 381 (2012)
- Copolymers of Cyclopentadithiophene and Electron-Deficient Aromatic Units Designed for Photovoltaic Applications, J.C. Bijleveld et al., Adv. Funct. Mater., 19, 3262-3270 (2009)
- Synthesis and Characterization of Bridged Bithiophene-Based Conjugated Polymers for Photovoltaic Applications: Acceptor Strength and Ternary Blends, C.-H. Chen, Macromolecules, 43 (2), 697-708 (2010)
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