Synthesis and characterization of gold nanoparticles stabilized by palladium(II) phosphine thiol |
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Authors: | Floriana Vitale Rosa Vitaliano Ilaria Fratoddi Emanuela Piscopiello Maria Vittoria Russo |
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Institution: | a Department of Chemistry, University of Roma “Sapienza” P.le A. Moro, 5-00185 Roma, Italy b Department of Physics, INFM, INSTM and CISDiC Unit, University “Roma Tre”, Via della Vasca Navale, 84-00146 Rome, Italy c ENEA-Brindisi Research Centre, Department of Physics and Technology and New Materials (FIM), S.S. 7 Appia km.713, 72100 Brindisi, Italy |
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Abstract: | This work is focused on the synthesis of innovative hybrids made by linking gold nanoparticles to protected organometallic Pd(II) thiolate. The organometallic protected Pd(II) thiolate, i.e. trans-thioacetate-ethynylphenyl-bis(tributylphosphine)palladium(II) has been synthesized, in situ deprotected and linked to Au nanoparticles. In this way new hybrid, with a direct link between Pd(II) and Au nanoparticles through a single S bridge, has been isolated. The combination of the organometallic Pd(II) thiol with gold nanoparticles allows the enhancement and tailoring of electronic and optical properties of the new organic-inorganic nano-compound. Single-crystal gold nanoparticles, uniform in shape and size were obtained by applying a modified two-phase method (improved Brust-Schiffrin reaction). In addition, the chemical environment of the Au nanoparticles was investigated and a covalent bonding between Au nanoparticles and the organometallic thiols was observed. |
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Keywords: | Gold nanoparticles Organometallic thiolates Pd(II) complexes |
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