tailieunhanh - Báo cáo hóa học: " Synthesis and Microstructural Investigations of Organometallic Pd(II) Thiol-Gold Nanoparticles Hybrids"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Synthesis and Microstructural Investigations of Organometallic Pd(II) Thiol-Gold Nanoparticles Hybrids | Nanoscale Res Lett 2008 3 461-467 DOI s11671-008-9181-x NANO EXPRESS Synthesis and Microstructural Investigations of Organometallic Pd II Thiol-Gold Nanoparticles Hybrids Floriana Vitale Rosa Vitaliano Chiara Battocchio Ilaria Fratoddi Cinzia Giannini Emanuela Piscopiello Antonella Guagliardi Antonio Cervellino Giovanni Polzonetti Maria Vittoria Russo Leander Tapfer Received 16 July 2008 Accepted 17 September 2008 Published online 10 October 2008 to the authors 2008 Abstract In this work the synthesis and characterization of gold nanoparticles functionalized by a novel thiol-organometallic complex containing Pd II centers is presented. Pd II thiol trans trans- dithiolate-dibis tributylphosphine dipalladium II -4 4 -diethynylbiphenyl was synthesized and linked to Au nanoparticles by the chemical reduction of a metal salt precursor. The new hybrid made of organometallic Pd II thiol-gold nanoparticles shows through a single S bridge a direct link between Pd II and Au nanoparticles. The size-control of the Au nanoparticles diameter range 2-10 nm was achieved by choosing the suitable AuCl4- thiol molar ratio. The size strain shape and crystalline structure of these functionalized nanoparticles were determined by a full-pattern X-ray powder diffraction analysis high-resolution TEM and X-ray photoelectron F. Vitale E. Piscopiello L. Tapfer Department of Advanced Physics Technology New Materials FIM Brindisi Research Center ENEA . Appia Brindisi 72100 Italy F. Vitale R. Vitaliano I. Fratoddi H M. V. Russo Department of Chemistry University of Roma La Sapienza Roma 5 - 00185 Italy e-mail C. Battocchio G. Polzonetti Department of Physics INSTM and CISDiC Unit University Roma Tre Via della Vasca Navale Rome 84 - 00146 Italy C. Giannini A. Guagliardi Institute of Crystallography CNR via Amendola 122 O Bari 70126 Italy A. Cervellino Laboratory for Neutron Scattering ETH Zurich and PSI Villigen Villigen PSI CH-5232 .