Design and Syntheses of Metal Ion Templated Self-Assemblies and Anion Recognition through Second Sphere Coordination

Abstract

Self-assembly is used to describe the process in which a disordered system of pre-existing components forms an organized structure or pattern as a consequence of non-covalent interactions among the components themselves, without external direction. Self-assembly suggests the distinction between ‘‘self’’ and ‘‘non-self,’’ with recognition and selection between the two during assembly. According to Lehn, supramolecular chemistry can be described as an information science in which molecular components that contain the necessary information, self-assemble into large specific structures.Consequently, self-assembly has been recognized as a powerful tool for the construction of supramolecular scaffolds, as established by several excellent contributions.To achieve self-assembled systematized architecture, the necessary instructions must be incorporated into the structures of the building blocks by chemical synthesis. Thus, molecules can be made to self-assemble spontaneously into multi-component complex structures when they are instructed to do so. The instructions exist in the form of the molecule’s shape, its chemical properties, and how well it fit into the space where the assembly takes place etc. Each step in the assembly process is reversible and dynamic, that means the complex product is constantly forming, dissipating and proceeds via an error correcting method. Over the last two decades, the field of metallo-supramolecular selfassembly has emerged as a promising area of research for the development of specific, three-dimensional structures of increasing complexity and functionality.The beginning of this area of research has been benefited from design principles that consist of the ligand geometry and metal coordination geometry, thus opening up routes towards rationally designed classical supramolecular architectures. The success of this melal assisted self-assembled supramolecular architectures lies in its wide range of applications. Metal ion mediated self-assembled helical compounds are one of the most important and remains a crucial area for research over the last two decades.The research was carried out under the supervision of Prof. Pradyut Ghosh, Inorganic Chemistry division under the SCS [School of Chemical Sciences]The research was conducted under CSIR fellowship and projec