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Molecular doping is an of significance approach to reduce defects density of perovskite and to improve interfacial charge extraction in perovskite solar cells. Here, we show a new strategy for chemical doping of perovskite via an organic small molecule, which features a fused tricyclic core, showing strong intermolecular p-Pb 2+ interactions with under-coordinated Pb 2+ in perovskite. This p-Pb 2+ interactions could reduce defects density of the perovskite and suppress the nonradiative recombination, which was also confirmed by the density functional theory calculations. In addition, this doping via p-Pb 2+ interactions could deepen the surface potential and downshift the work function of the doped perovskite film, facilitating the hole extraction to hole transport layer. As a result, the doped device showed high efficiency of 21.41 % with ignorable hysteresis. This strategy of fused tricyclic corebased doping provides a new perspective for the design of new organic materials to improve the device performance.

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Two cyclization modes are realized to produce different nitrogen-containing heterocycles, i.e., quinazolin-4(3H)-imines and acridines by assembling o-cyanoanilines and diaryliodonium salts via tandem reaction pathways.

A modular method to synthesize acridine derivatives was developed with o‐acylanilines and diaryliodonium salts. The reactions proceeded smoothly under Cu‐catalyzed or metal‐free reaction conditions at elevated temperature through tandem arylation/Friedel–Crafts reactions.

A concise construction of polycyclic quinolines via intramolecular [2 + 2 + 2] annulation of ω-cyano-1-alkynes with diaryliodonium salts was realized. The process produced polycyclic quinolines in high yields with readily available staring materials and was tolerated with halogen substituents.

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This review focuses on recent advances in sacrificial anode-enabled organic electroreductions.