Perfluoroaryl⋯aryl interaction: The most important subset of π -hole⋯ π bonding

Abstract

The perfluoroaryl⋯aryl interaction, the most important subset of π-hole⋯π bonding, refers to the attractive stacking interaction between a perfluoroaryl group and an aryl group. In contrast to the aryl⋯aryl interaction with the same size, the much stronger perfluoroaryl⋯aryl interaction has its own characteristics and applications. A brief history of the development of the perfluoroaryl⋯aryl interaction was given first in this review, followed by an overview of the state-of-the-art of the nature of the perfluoroaryl⋯aryl interaction. Much attention was paid to the application of the perfluoroaryl⋯aryl interaction both in the traditional research fields such as crystal engineering and organic luminescent materials and in the hot research fields such as photovoltaics materials and biological engineering. It is believed that this timely and comprehensive review provides a foundation and guide for the future development and application of the perfluoroaryl⋯aryl interaction.