CAS Number 2328118-91-6
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 ).
| CAS Number | 2328118-91-6 |
| 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 |
Chemical structure of COTIC-4F
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