The Construction And Performance Study Of Supramolecular Nano Or Micro-sized Structure Based On Platinum Chemistry

With the development of supramolecular chemistry, a variety of nano or micrometer structures were constructed via multiple intermolecular weak interactions. Coordination-driven self-assembly provides a facile means of synthesizing well-defined metallacycles of predetermined size and geometry. Functionalization of the component acceptor or donor building blocks allows for the preparation of multifunctional supramolecular materials wherein the stoichiometry and position of individual functional moieties can be precisely controlled. Recently, metal centres have been incorporated into organic-based gelators that can integrate the interesting and unique properties of metal complexes into gelator molecules that can hardly be achieved by pure organic compounds.We have studied the self-assembly behaviour at different scale based on platinum chemistry. On the nanoscale, a series of functionalized supramolecular metallacycles were prepared. With the introduction of multiple non-covalent intermolecular interactions, supramolecular self-assembly with multiple simple building blocks can effectively form complex higher order dendrimer system. A series of multiple triphenylamine metallacycles were synthesized, some of these can form electropolymerized films, and the films have size-selective guest transport characteristics. A series of multiple porphyrin metallacycles were synthesized, and they can enhance the solubility of carbon nanotubes in organic solvents and purify carbon nanotubes with specific size.On the other hand, a series of new platinum-acetylide complexes containing ethynyl-pyrene moieties as the main skeleton were synthesized and characterized. Moreover, the gelation properties and luminescent behavior of these complexes were investigated. In addition, we designed and synthesized a series of new rod-coil complexes, in which we have introduced azo-benzene groups onto the platinum-acetylide frameworks. The trans-to-cis transformation of these compounds both in solution and gel state were measured. The gelators exhibited highly ordered honeycomb patterns on a large-scale, and intermolecular hydrogen bonding play an essential role during the formation of supramolecular aggregates. A series of branched platinum-acetylide porphyrin derivatives were successfully prepared via a modified method and their self-assembly behaviour both in solution and on the surface was explored.