Title Synthesis, Structural and Association studies of Chiral Supramolecular Tectones Based on Bicyclo[3.3.1]nonane Framework /
Translation of Title Chiralinių supramolekulinių tektonų, turinčių biciklo[3.3.1]nonano fragmentą, sintezė, struktūros ir asociacijos tyrimai.
Authors Bagdžiūnas, Gintautas
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Pages 37
Keywords [eng] supramolecular chemistry ; exciton interaction ; DFT calculation ; nanoparticles ; circular dichroism
Abstract [eng] The supramolecular chemistry of assemblies composed of a limited or infinite number of the molecular tectons interacting with each other via noncovalent interactions was investigated with a special emphasize on the chirality of the building blocks. The following objectives were pursued in this work: 1) to determine the electronic structure of both conformationally rigid and labile chiral bicyclo[3.3.1]nonane compounds, the mutual orientation and distance of the chromophores and its impact on chiroptical properties, 2) to study the influence of chirality and structure of palladacycle and trisubstituted compounds, containing external bicyclo[3.3.1]nonanyl- and aromatic fragments of different size on the formation of various supramolecular structures. The chiral bicyclo[3.3.1]nonane compounds with chromophores of different electronic nature were synthesized. The possibilities of exciton interaction and charge transfer phenomena were studied in the obtained molecules. The influence of chirality and structure of trisubstituted compounds containing external bicyclo[3.3.1]nonanyl- and aromatic fragments of different size on supramolecular association in solution and on the surface was investigated. In solution, the trisubstituted compounds exist in the form of nanoparticles with regular supramolecular structure. It was shown that the V-shaped chiral and racemic dialkynbicyclo[3.3.1]nonenyl- ligands having coordinating pyridine moiety, form rhomb-shaped palladacycle. The racemic and chiral palladacycle exist, respectively, in the form of [2]catenanes and nanocrystallites in solution and on surface, with the dimension of about 100 nm.
Type Summaries of doctoral thesis
Language English
Publication date 2012