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 ).
|Purity||>99% (1H NMR)|
|Form||Dark blue powder/crystals|
|CAS number||Not Available|
|Molecular weight||1303.73 g/mol|
|Absorption||λmax 875 nm (solution); 975 nm (Film)|
|HOMO / LUMO||HOMO = -5.26 eV, LUMO = -4.17 eV |
|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 DocumentationCOTIC-4F MSDS Sheet
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.
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