Mechanistic aspects of ligand exchange in Au nanoparticles

2008 ◽  
Vol 10 (33) ◽  
pp. 5029 ◽  
Author(s):  
A. Caragheorgheopol ◽  
V. Chechik
Keyword(s):  
Ligand Exchange ◽  
Au Nanoparticles

Reduced Reactivity of Aged Au Nanoparticles in Ligand Exchange Reactions

2004 ◽  
Vol 126 (25) ◽  
pp. 7780-7781 ◽  
Author(s):  
Victor Chechik
Keyword(s):  
Ligand Exchange ◽  
Au Nanoparticles ◽  
Exchange Reactions

Probing the ligand exchange kinetics of phenynyl-based ligands on colloidal Au nanoparticles

2021 ◽  
Vol 5 (1) ◽  
pp. 465-471
Author(s):  
Ting Xiang ◽  
Jianpeng Zong ◽  
Wenjia Xu ◽  
Yuhua Feng ◽  
Hongyu Chen
Keyword(s):  
Real Time ◽  
Ligand Exchange ◽  
Au Nanoparticles ◽  
Relative Strength ◽  
Real Time Monitoring ◽  
Exchange Kinetics ◽  
Colloidal Au ◽  
Kinetics Of

We show that phenynyl ligand could readily bind to colloidal Au nanoparticles. By real-time monitoring the SERS during ligand exchange, the relative strength of phenynyls, thiols and PVP ligands, and different phenynyls were successfully ranked.

Modulating the Structure and Hydrogen Evolution Reactivity of Metal Chalcogenide Complexes through Ligand Exchange onto Colloidal Au Nanoparticles

ACS Catalysis ◽  
2020 ◽  
Vol 10 (22) ◽  
pp. 13305-13313
Author(s):  
Vamakshi Yadav ◽  
Jeffrey S. Lowe ◽  
Alexander J. Shumski ◽  
Eric Z. Liu ◽  
Jeffrey Greeley ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Ligand Exchange ◽  
Au Nanoparticles ◽  
Metal Chalcogenide ◽  
Colloidal Au

Chiral metal nanoparticles encapsulated by a chiral phosphine cavitand with the tetrakis-BINAP moiety: their remarkable stability toward ligand exchange and thermal racemization

2016 ◽  
Vol 45 (11) ◽  
pp. 4486-4490 ◽  
Author(s):  
Ryo Nishimura ◽  
Ryo Yasutake ◽  
Shota Yamada ◽  
Koji Sawai ◽  
Kazuki Noura ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Ligand Exchange ◽  
Au Nanoparticles

A chiral phosphine cavitand1induced the formation of chiral metal (Ru, Rh, Pd, Ag, Pt, and Au) nanoparticles (NPs). The ligand1of the chiral metal NPs prevents both thermal racemization and ligand exchange with a thiol.

scholarly journals Facile phase transfer of gold nanorods and nanospheres stabilized with block copolymers

2018 ◽  
Vol 9 ◽  
pp. 616-627 ◽  
Author(s):  
Yaroslav I Derikov ◽  
Georgiy A Shandryuk ◽  
Raisa V Talroze ◽  
Alexander A Ezhov ◽  
Yaroslav V Kudryavtsev
Keyword(s):  
Ligand Exchange ◽  
Au Nanoparticles ◽  
Phase Transfer ◽  
Hybrid Composites ◽  
Transmission Electron Microscopy Data ◽  
Optical Absorbance ◽  
Nanoparticle Surface ◽  
Transmission Electron ◽  
Fast Route ◽  
Microscopy Data

A fast route to transfer Au nanoparticles from aqueous to organic media is proposed based on the use of a high molecular mass diblock copolymer of styrene and 2-vinylpyridine for ligand exchange at the nanoparticle surface. The method enables the preparation of stable sols of Au nanorods with sizes of up to tens of nanometers or Au nanospheres in various organic solvents. By comparing the optical absorbance spectra of Au hydro- and organosols with the data of numerical simulations of the surface plasmon resonance, we find that nanoparticles do not aggregate and confirm the transmission electron microscopy data regarding their shape and size. The proposed approach can be effective in preparing hybrid composites without the use of strong thiol and amine surfactants.

ChemInform Abstract: Mechanistic Aspects of Ligand Exchange in Au Nanoparticles

ChemInform ◽  
2008 ◽  
Vol 39 (47) ◽  
Author(s):  
A. Caragheorgheopol ◽  
V. Chechik
Keyword(s):  
Ligand Exchange ◽  
Au Nanoparticles

scholarly journals Decoration of metal oxide surface with {111} form Au nanoparticles using PEGylation

RSC Advances ◽  
2018 ◽  
Vol 8 (33) ◽  
pp. 18442-18450 ◽  
Author(s):  
Cheon Woo Moon ◽  
Jongseong Park ◽  
Seung-Pyo Hong ◽  
Woonbae Sohn ◽  
Dinsefa Mensur Andoshe ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Exchange Reaction ◽  
Ligand Exchange ◽  
Au Nanoparticles ◽  
Phase Transfer ◽  
Oxide Surface ◽  
High Coverage ◽  
Oxide Semiconductors ◽  
Ligand Exchange Reaction ◽  
Metal Oxide Surface

Phase transfer in the ethanol-dichloromethane medium extinguished the limitation of the ligand exchange reaction on the gold (111) surface. High-coverage octahedral Au NP decoration on metal oxide semiconductors is achieved by the process.

One pot ligand exchange method for a highly stable Au–SBA-15 catalyst and its room temperature CO oxidation

2018 ◽  
Vol 54 (87) ◽  
pp. 12412-12415 ◽  
Author(s):  
Yogita Soni ◽  
I. Kavya ◽  
T. G. Ajithkumar ◽  
C. P. Vinod
Keyword(s):  
Co Oxidation ◽  
Ligand Exchange ◽  
Room Temperature ◽  
Au Nanoparticles ◽  
Fundamental Issue ◽  
One Pot ◽  
Exchange Method

A modified deposition precipitation (DP) method has been developed to address a fundamental issue of supporting well dispersed Au nanoparticles on silica.

Separation of fudosteine on an achiral C18column by HPLC with chiral ligand-exchange selectors as mobile phase additives

2008 ◽  
Vol 20 (4) ◽  
pp. 585-594 ◽  
Author(s):  
J. Ma ◽  
J. Cao ◽  
M. J. Ding ◽  
L. H. Yuan ◽  
M. J. Zhai ◽  
...  
Keyword(s):  
Ligand Exchange ◽  
Mobile Phase ◽  
Chiral Ligand ◽  
Mobile Phase Additives ◽  
Chiral Ligand Exchange

Synthesis and Photochemical Properties of Re(I) Tricarbonyl Complexes Bound to Thione and Thiazole-2-ylidene Ligands

2020 ◽  
Author(s):  
Matthew Stout ◽  
Brian Skelton ◽  
Alexandre N. Sobolev ◽  
Paolo Raiteri ◽  
Massimiliano Massi ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Ligand Exchange ◽  
Ligand Substitution ◽  
Bidentate Ligand ◽  
The Other ◽  
Ligand Exchange Reaction ◽  
Multiple Products ◽  
Ligand Charge Transfer ◽  
Photochemical Properties

<p>Three Re(I) tricarbonyl complexes, with general formulation Re(N^L)(CO)<sub>3</sub>X (where N^L is a bidentate ligand containing a pyridine functionalized in the position 2 with a thione or a thiazol-2-ylidene group and X is either chloro or bromo) were synthesized and their reactivity explored in terms of solvent-dependent ligand substitution, both in the ground and excited states. When dissolved in acetonitrile, the complexes bound to the thione ligand underwent ligand exchange with the solvent resulting in the formation of Re(NCMe)<sub>2</sub>(CO)<sub>3</sub>X. The exchange was found to be reversible, and the starting complex was reformed upon removal of the solvent. On the other hand, the complexes appeared inert in dichloromethane or acetone. Conversely, the complex bound to the thiazole-2-ylidene ligand did not display any ligand exchange reaction in the dark, but underwent photoactivated ligand substitution when excited to its lowest metal-to-ligand charge transfer manifold. Photolysis of this complex in acetonitrile generated multiple products, including Re(I) tricarbonyl and dicarbonyl solvato-complexes as well as free thiazole-2-ylidene ligand.</p>

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