Molecular Capsules Based on Metal Complexes with Resorcin[4]arenes and Pyrogallol[4]arenes

Abstract

Metal‐organic nanocapsules (MONCS) have generated widespread interest in recent years because of potential applications in a number of areas, including catalysis, pharmaceutical delivery and information storage. The focus of this chapter is metal complexes for which upper rim hydroxyl groups of resorcin[4]arenes or pyrogallol[4]arenes are ligated to the metal. The stereostructures of the arene macrocycles are discussed in terms of the effect of the R group on the thermodynamic stability of the crown conformation preferred for capsule formation. Studies on hydrogen‐bonded capsules that led to the development of the MONCS are described. Finally, the structures and properties of the MONCs are compared and contrasted with respect to choice of macrocycle, metal, R group, guest, and size.

Aminomethylated Calix[4]resorcinarenes as Modifying Agents for Glycidyl Methacrylate (GMA) Rigid Copolymers Surface

“…As a result of these efforts, studies have recently been initiated with the calix[4]resorcinarenes macrocycles as modifiers of polymeric surfaces, mainly because they possess a variety of functional groups that allow selective functionalization, increasing the degree of interaction with the analytes [9]. The versatility of the functionalization of calix[4]resorcinarenes has led to potential applications in other fields, such as chiral nuclear magnetic resonance solvating agents [10,11], chemical receptors for molecules and ions [12,13,14], molecular encapsulation [15,16,17], selective complexation of metal ions and neutral substances [18,19,20], catalysis [21,22], and liquid crystals [23], among others.…”