BBT-2C6ThBr, namely 4,8-bis(5-bromo-4-hexylthiophene)-benzo[1,2-c;4,5-c']bis[1,2,5] thiadiazole, has been used as a building block for the synthesis of extremely low-band-gap OFET polymers such as PBBTSD and PBBTPD which extend the absorption to 1200 nm with onset at 2030 nm.
With two electron withdrawing benzothiadiazoles, BBT-2C6ThBr is extremely electron deficient to forming ambipolar low band-gap polymers, allowing both electrons and holes to be easily injected.
|Chemical formula||C26H28Br2 N4S4|
|Molecular weight||684.61 g/mol|
|Full name||4,8-bis(5-bromo-4-hexylthiophene)-benzo[1,2-c;4,5-c']bis[1,2,5] thiadiazole|
|Classification / Family||Benzo[1,2-c;4,5-c']bis[1,2,5] thiadiazole (BBT) derivatives, Organic intermediates and building blocks, Semiconductor Synthesis, Low band gap polymers, Organic Photovoltaics.|
|Boiling point||Not available|
|Appearance||Blueish green solid
Literature and Reviews
- Ambipolarity in Benzobisthiadiazole-Based Donor–AcceptorConjugated Polymers, J. D. Yuen et al., Adv. Mater., 23, 3780–3785 (2011); DOI: 10.1002/adma.201101134.
- Benzothiadiazole and its π-extended, heteroannulated derivatives: useful acceptor building blocks for high-performance donor–acceptor polymers in organic electronics, Y. Wang et al., J. Mater. Chem. C, 4, 6200 (2016); DOI: 10.1039/c6tc01860b.
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