Non-covalent interactions involving π effect between organic cations in low-dimensional organic/inorganic hybrid perovskites

Low-dimensional organic/inorganic hybrid perovskites (OIHPs) are a promising class of materials with a wide range of potential applications in optoelectronics and other fields since these materials can synergistically combine individual features of organic molecules and inorganics into unique properties. Non-covalent interactions are commonly observed in OIHPs, in particular, p-effect interactions between the organic cations. Such non-covalent interactions can significantly influence important properties of the low-dimensional OIHPs, including dielectric confinement, bandgap, photoluminescence, quantum efficiency, charge mobility, trap density, stability, and chirality. This perspective reviews recent studies of non-covalent interactions involving the p systems of organic cations in low-dimensional OIHPs. The analysis of crystal structures of low-dimensional OIHPs offers significant insight into understanding such non-covalent interactions and their impacts on specific properties of these OIHPs. The developed structure-property relationships can be used to engineer non-covalent interactions in low-dimensional OIHPs for applications.

Automated summary

Low-dimensional organic/inorganic hybrid perovskites (OIHPs) combine the unique properties of organic molecules and inorganics, making them promising materials for optoelectronics and other applications. Non-covalent interactions, particularly p-effect interactions, have a significant impact on important properties of low-dimensional OIHPs including dielectric confinement, bandgap, photoluminescence, quantum efficiency, charge mobility, trap density, stability, and chirality. This perspective reviews recent studies on non-covalent interactions involving the p systems of organic cations in low-dimensional OIHPs, providing insight into understanding and engineering these interactions for specific applications.