Functionalization of inorganic nanomaterials with pillar[n]arenes
Pillar[n]arenes, which consisting of hydroquinone units linked by -CH2- bridges at 2,5-positions, are a relatively new class of synthetic macrocycles since 2008. Their facile preparation and flexible modification properties make them ideal stabilizers for inorganic nanomaterials. What’s more, their symmetrical and columnar architectures, very rigid and π-rich cavities endow them rich host-guest properties. This Feature Article provides an overview of functionalization of inorganic nanomaterials with pillar[n]arenes and their applications. These inorganic nanomaterials are classified into three major classes according to the different type of composition: (1) novel metal nanomaterials; (2) hybrid metal nanomaterials; (3) porous materials. The applications of these nanomaterials, such as catalysis, drug delivery, cancer therapy, and sensing are comprehensively discussed.