Zhang, Qian-Qian; Li, Yaokai; Wang, Di; Chen, Zeng; Li, Yuhao; Li, Shuixing; Zhu, Haiming; Lu, Xinhui; Chen, Hongzheng; Li, Chang-Zhi published the artcile< Intrinsically Chemo- and Thermostable Electron Acceptors for Efficient Organic Solar Cells#>, Computed Properties of 6942-39-8, the main research area is organic solar cell acceptor dnor stille coupling.
The traditional preparation of non-fullerene acceptors (NFAs) via Knoevenagel condensation reaction (KCR) of aldehyde and active methylene leaves vulnerable and reversible exocyclic vinyl bonds in structures, which undermine the intrinsic chemo- and photostability of NFAs. In this work, we demonstrate a new access to acceptor-donor-acceptor (A-D-A) NFAs via Stille coupling between new electron deficient groups and classic donor core in over 90% yield, wherein the robust carbon-carbon bonds, replacing the exocyclic double bonds from traditional KCR, result in stable A-D-A acceptors, Q1-XF (X representing 0, 2 and 4 fluorine atoms, resp.). Among the three studied examples, Q1-4F exhibits improved optoelectronic and electron transport properties, leading to the best photovoltaic performance with optimal charge kinetics for Q1-4F based OSCs. Overall, this strategy can lead to a new way for developing stable photovoltaic materials.
Bulletin of the Chemical Society of Japan published new progress about Coupling reaction. 6942-39-8 belongs to class bromides-buliding-blocks, and the molecular formula is C8H6BrFO2, Computed Properties of 6942-39-8.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary