COTIC-4F
COTIC-4F, NFA for responsive organic solar cells and organic photodetectors
Narrow bandgap n-type semiconductor with absorption range near infrared, available to buy online
COTIC-4F has a molecular configuration of A−D'−D−D'−A that is based on an electron rich internal core of cyclopentadithiophene (CPDT) as the central donor unit flanked with alkoxythienyl units, terminated with two 2-(5,6-difluoro-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile (IC-2F) acceptor units.
COTIC-4F is a narrow bandgap n-type molecular semiconductors extending its absorption from 700 nm to near infrared range (about 1100 nm) with an optical bandgap of ~1.1 eV. COTIC-4F can be used as active layer material for near infrared (NIR) responsive organic solar cells (OSCs ) and organic photodetectors (OPDs ).
Chemical Structure
Literature and Reviews
- Bandgap Narrowing in Non-Fullerene Acceptors: Single Atom Substitution Leads to High Optoelectronic Response Beyond 1000 nm, J. Lee et al., Adv. Energy Mater., 8 (24), 1801212 (2018); doi: 10.1002/aenm.201801212.
- Side Chain Engineering of Non Fullerene Acceptors for Near Infrared Organic Photodetectors and Photovoltaics, J. Lee et al., ACS Energy Lett., 4 (6); 1401–1409 (2019); DOI: 10.1021/acsenergylett.9b00721.
- Near-infrared organic photoelectric materials for light harvesting systems: Organic photovoltaics and organic photodiodes, B. Xie et al., InfoMat., 2, 57–91 (2020); DOI: 10.1002/inf2.12063.
- High brightness NIR-II nanofluorophores based on fused-ring acceptor molecules, X. Zhu et al., Nano Res., 13(9): 2570–2575 (2020); doi: 10.1007/s12274-020-2901-y.
General Information
| CAS Number | N/A |
| Chemical Formula | C75H78F4N4O4S4 |
| Purity | >99% (1H NMR) |
| Full Name | 2,2'-((2Z,2'Z)-(((4,4-bis(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b']dithiophene-2,6-diyl)bis(4-(2-ethylhexyloxy)thiophene-5,2-diyl))bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile |
| Molecular Weight | 1303.73 g/mol |
| Absorption | λmax 875 nm (in chloroform); 990 nm (Film) |
| HOMO / LUMO | HOMO = -5.26 eV, LUMO = -4.17 eV [1] |
| Solubility | Chloroform, chlorobenzene |
| Form | Dark blue powder/crystals |
| Synonyms | COTIC-4F |
| Classification / Family | NFAs, n-type non-fullerene electron acceptors, Organic semiconducting materials, Low band-gap small molecule, Small molecular acceptor, Organic photovoltaics, Polymer solar cells, NF-PSCs |
MSDS Documentation
COTIC-4F MSDS Sheet
Pricing
| Batch | Quantity | Price |
| M2246A1 | 100 mg | £400 |
| M2246A1 | 250 mg | £800 |
| M2246A1 | 500 mg | £1400 |
| M2246A1 | 1 g | £2500 |
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we stock a wide range of non-fullerene acceptors (NFAs). Please contact us if you cannot find what you are looking for.
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