Dynamic supramolecular template

Fig. 9 Cation-template resolution of a dynamic supramolecular guanine system in which G-quartet is reversibly exchanging with linear ribbons followed by a secondary irreversible sol-gel selection of G-quadruplex hybrid materials...

J. Am. Chem. Soc., 126, 16280-16281 Zelder, F.H. and Rebek, J. Jr. (2006) Cavitand templated catalysis of acetylcholine. Chem. Commun., 753-754 Purse, B.W. and Rebek, J. Jr. (2005) Supramolecular structure and dynamics special feature Functional cavitands Chemical reactivity in structured environments. Proc. Nail. Acad. Sci. U.S.A., 102, 10777-10782. 

The principal motivation for studying these sugar-based microemulsion glasses came from the observation that water-oil-surfactant mixtures are extensively for nanomaterials synthesis with the central idea of switching dynamic self-assembly into chemically and mechanically stable supramolecular materials. Template polymerisations are classified as synergistic or transcriptive templating depending on whether the template itself participates in the reaction. 

Abstract This review presents an overview of the area of anion-templated synthesis of molecules and supramolecular assemblies. The review is divided into two main sections the first part deals with anion-templated systems where the final products are linked by bonds that are not reversible under the conditions of the experiment Several recent examples of macrocycles, cages and interlocked species are presented in this section. The second part of the chapter, presents a discussion of anion-templation in systems containing reversible bonds that give rise to dynamic combinatorial libraries (either by formation of coordination metal-ligand bonds or by reversible covalent bonds). 

This chapter aims to provide an update on the role of anions as templates. The review is divided in two main sections (a) anion-templated synthesis of assemblies linked together by irreversible bonds (or bonds that are inert under mild experimental conditions) (b) anion templates in systems where the bonds linking the components are reversible and lead to anion-controlled dynamic combinatorial libraries. Since some comprehensive reviews in the area of anion temptation have appeared over the past few years [5-7], this chapter will mainly focus on papers published recently and will aim to show the principles of anion temptation rather than being a comprehensive account of the literature. In addition, the scope of the chapter will be restricted to finite assemblies (molecular or supramolecular) and not polymeric (for a review on molecularly imprinted polymers using anions see Steinke s chapter in this volume). 

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