
2FIC, namely 2-(5,6-Difluoro-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile, is electron deficient. It is used as a building block to prepare non-fullerene acceptors (NFAs) such as ITIC-2F, IHIC-2F, IEIC-2F, IXIC-2F for highly efficient organic photovoltaic devices.
Fluorination of the end groups can further extend the absorption of the targeted NFAs into near infrared (NIR) due to enhanced intramolecular charge transfer between the core of the NFAs and the end 2FIC groups.
2FIC is strong electron-withdrawing and the electron mobility of the NFAs can be promoted by such intermolecular interactions through forming noncovalent F···S and F···H bonds.
General Information
CAS number | 2083617-82-5 |
Chemical formula | C12H4F2N2O |
Molecular weight | 230.17 g/mol |
Full name | 2-(5,6-Difluoro-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile |
Synonyms | IC-2F, EG-2F, ID-F, 2-(5,6-Difluoro-2,3-dihydro-3-oxo-1H-inden-1-ylidene)propanedinitrile |
Classification / Family | Malononitrile, Indanone, Monomer and inermediates, ITIC, None-fullerene acceptors (NFAs), NFA-OSCs, printing electronics |
Chemical Structure

Product Details
Purity | >98% (by NMR) |
Melting point | n.a. |
Appearance | Pale yellow solid |
MSDS Documentation
2FIC MSDS Sheet
Literature and Reviews
- Design, Synthesis, and Photovoltaic Characterization of a Small Molecular Acceptor with an Ultra‐Narrow Band Gap, H. Yao et al., Angew. Chem. Int. Ed., 56, 3045 (2017); doi: 10.1002/anie.201610944.
- Molecular Optimization Enables over 13% Efficiency in Organic Solar Cells, W. Zhao et al., J. Am. Chem. Soc., 139(21), 7148-7151 (2017); doi: 10.1021/jacs.7b02677.
- A Twisted Thieno[3,4-b]thiophene-Based Electron Acceptor Featuring a 14-π-Electron Indenoindene Core for High-Performance Organic Photovoltaics, S. Xu et al., Adv. Mater., 1704510 (2017); DOI: 10.1002/adma.201704510.
- Naphthodithiophene-Based Nonfullerene Acceptor for High-Performance Organic Photovoltaics: Effect of Extended Conjugation, J. Zhu et al,, Adv. Mater., 30, 1704713 (2018); DOI: 10.1002/adma.201704713.
To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.
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我们产品注册的时候在安全性说明上标明了该仪器由专业人员操作,所以不考虑这条。但是药监局老师说应该考虑。请教各位,这个如果考虑的话,该怎么进行符合性证明?如果可以不考虑的话,请问有什么法规或文件支持?

