Development of new nanocatalysts for fuel generation and catalytic applications

In this thesis study; perfluoroalkylated (-C8F17) C2 symmetric chiral N-substituted phosphoramidite and P-substituted aminophosphine ligands with a binaphthyl skeleton were synthesized and chiral palladium nanoparticles (PdNPs) in seven different structures were prepared using these ligands as stabilizers. The characterization of organic intermediates and ligands was made with various spectroscopic techniques (1H, 13C, 31P and 19F NMR and MS), the enantiopurities of ligands and some starting compounds were determined by HPLC analyses, and optical rotations of all organic compounds were also determined by polarimeter analyses. Particle distributions and average particle sizes of chiral PdNPs were determined by transmission electron microscopy (TEM) and crystal structures and atom arrays were measured with X-ray diffractometry (XRD) and X-ray photoelectron spectroscopy (XPS) analyses. The catalytic behavior of chiral nanoparticles in asymmetric Suzuki C-C coupling reaction was extensively investigated in organic solvent and supercritical carbon dioxide (ScCO2). Both asymmetric synthesis was performed for the first time in the presence of phosphoramidite and aminophosphine stabilized PdNPs, it also has the feature of being the first asymmetric C-C coupling reactions which carried out in ScCO2 and organic solvent. During these two asymmetric syntheses, the catalytic behavior of the chiral PdNPs has been demonstrated in detail by some techniques such as hot filtration and Hg(0) and CS2 poisioning tests. In addition, the recovery and reusability of PdNPs in catalytic reactions were also investigated. All nanoparticles were used as catalyst in the presence of sterically hindered and bulky substrates, and the scope of the catalytic reactions was expanded. The results revealed that phosphoramidite and aminophosphine stabilized PdNPs are ideal catalysts with high stability, very small and narrow size, can maintain their morphological structure, do not lose their chirality, can be reused many times, and provide high catalytic efficiency and enantioselectivity.