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    Synthesis, Characterization and Study of the Optical Properties of Gold(I) Complexes Bearing Vinyl Pyridine and 1,8-Naphtyridine Ligands

    , M.Sc. Thesis Sharif University of Technology Alizadeh Kurdestani, Niyaz (Author) ; Jamali, Sirous (Supervisor)
    The reaction of AuCl(SMe2) with two equiv of 2-vinylpyridine(2-Vpy) and one equiv of AgOTf gave the gold(I) complex [Au(2-Vpy)2], 1. Also the cationic gold(I) complex [Au(1,8-Naph)2][NTf2], 2, in which NTf2 is Bis(trifluoromethanesulfonyl)imide, has been prepared from the reaction of AuCl(SMe2), two equiv 1,8-naphthyridine and one equiv Ag(NTf2). The partial replacement of the NTf2 counter ion by PF6 using the reaction of 2 with one equiv TlPF6 leads to formation of the gold(I) complex [Au(1,8-Naphthyridine)2]〖"[NTf2]" 〗_("1" ⁄"3" ) 〖"[PF6]" 〗_("2" ⁄"3" ), 3. The solid state structure of 3 was determined using X-ray crystallography and its optical properties have been studied at room... 

    Synthesis and Characterization of a New Metallomacrocycle Complex of Au(I) Containing 4,4ˊ-Azopyridine Ligand

    , M.Sc. Thesis Sharif University of Technology Abdolrahimi, Amin (Author) ; Jamali, Sirous (Supervisor)
    Gold(I) complex of [Au2(μ-PAnP)Cl_2] (1) (PAnP = 9,10-bis(diphenylphosphino)anthracene) has been prepared from the reaction of AuCl(SMe2) with PAnP in a 2:1 molar ratio. The structure of 1 was determined using 1H NMR and 31P{1H} NMR spectroscopy in solution. The tetranuclear metallomacrocycle [Au4(μ-PAnP)2 (μ-4,4 AzoPy)2]OTf4 (2) (4,4 AzoPy = 4,4-Azopyridine) has been prepared from the reaction of complex 1 with AgOTf and 4,4-Azopyridine in a 1:2:1 molar ratio. The structure of 2 was characterized using X-ray crystallography in solid state, 1H NMR and 31P{1H} NMR spectroscopy, UV-Vis spectroscopy and photoluminescence spectroscopy in solution state. The 1 has bright green emission in solid... 

    Self-assembly of tryptophan-capped gold nanoparticles onto DNA network template

    , Article Journal of Dispersion Science and Technology ; Volume 30, Issue 2 , 2009 , Pages 254-258 ; 01932691 (ISSN) Sheikholeslami, Z ; Vosoughi, M ; Alemsadeh, I ; Sharif University of Technology
    In this study, a simple route to the formation of DNA-gold complex has been reported, using immobilized DNA as a template. The nanoporous gold films have been prepared by the electrostatic self assembly of gold nanoparticles capped with tryptophan. Tryptophan would improve surface properties of gold nanoparticles for strongly attaching to DNA. Fourier transform infrared spectroscopy confirmed that gold nanoparticles have been capped by tryptophan. Also measured zeta potential shows that there are positive charges on the surface of gold nanoparticles. Investigations by atomic force microscopy substantially confirm that tryptophan-capped gold nanoparticles can be bonded to DNA template...