Air-Stable Gold Nanoparticles Ligated by Secondary Phosphine Oxides for the Chemoselective Hydrogenation of Aldehydes: Crucial Role of the Ligand

2014 ◽  
Vol 136 (6) ◽  
pp. 2520-2528 ◽  
Author(s):  
Israel Cano ◽  
Andrew M. Chapman ◽  
Atsushi Urakawa ◽  
Piet W. N. M. van Leeuwen
Keyword(s):  
Gold Nanoparticles ◽  
Crucial Role ◽  
Secondary Phosphine ◽  
Phosphine Oxides ◽  
Chemoselective Hydrogenation

Air-Stable Gold Nanoparticles Ligated by Secondary Phosphine Oxides as Catalyst for the Chemoselective Hydrogenation of Substituted Aldehydes: a Remarkable Ligand Effect

2015 ◽  
Vol 137 (24) ◽  
pp. 7718-7727 ◽  
Author(s):  
Israel Cano ◽  
Miguel A. Huertos ◽  
Andrew M. Chapman ◽  
Gerd Buntkowsky ◽  
Torsten Gutmann ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Secondary Phosphine ◽  
Phosphine Oxides ◽  
Ligand Effect ◽  
Chemoselective Hydrogenation

Accessibility in Calix[8]arene-Bound Gold Nanoparticles: Crucial Role of Induced-Fit Binding

2010 ◽  
Vol 114 (38) ◽  
pp. 16060-16070 ◽  
Author(s):  
Jeong-Myeong Ha ◽  
Andrew Solovyov ◽  
Alexander Katz
Keyword(s):  
Gold Nanoparticles ◽  
Crucial Role ◽  
Induced Fit

scholarly journals The Crucial Role of Charge in Thermoresponsive-Polymer-Assisted Reversible Dis/Assembly of Gold Nanoparticles

2018 ◽  
Vol 6 (8) ◽  
pp. 1701270 ◽  
Author(s):  
Vladimir A. Turek ◽  
Sean Cormier ◽  
Benjamin Sierra-Martin ◽  
Ulrich F. Keyser ◽  
Tao Ding ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Crucial Role ◽  
Thermoresponsive Polymer

scholarly journals Secondary Phosphine Oxide Functionalized Gold Clusters and their Application in Photoelectrocatalytic Hydrogenation Reactions

2021 ◽  
Author(s):  
Yu Wang ◽  
Xiao-He Liu ◽  
Rongbin Wang ◽  
Beatrice Cula ◽  
Zhe-Ning Chen ◽  
...  
Keyword(s):  
Phosphine Oxide ◽  
Crucial Role ◽  
Density Functional ◽  
Secondary Phosphine ◽  
Functional Theory ◽  
New Family ◽  
Type Semiconductor ◽  
Hydrogenation Reactions ◽  
P Type

Ligands in ligand-protected metal clusters play a crucial role, not only because of their interaction with the metal core, but also because of the functionality they provide to the cluster. Here, we report the utilization of secondary phosphine oxide (SPO), as a new family of functional ligands, for the preparation of an undecagold cluster Au11-SPO. Different from the common used phosphine ligand (i.e. triphenylphosphine, TPP), the SPOs in Au11-SPO work as electron-withdrawing anionic ligands. While coordinating to gold via the phosphorus atom, the SPO ligand keeps its O atom available to act as a nucleophile. Upon photoexcitation, the clusters are found to inject holes into p-type semiconductors (here bismuth oxide is used as a model), sensitizing the p-type semiconductor in a different way compared to the photosensitization of a n-type semiconductor. Furthermore, the Au11-SPO/Bi2O3 photocathode exhibits a much higher activity towards the hydrogenation of benzaldehyde than a TPP-protected Au 11 sensitized Bi2O3 photocathode. Control experiments and<br>density functional theory studies point to the crucial role of the cooperation between gold and the SPO ligands on the selectivity towards the hydrogenation of the C=O group in benzaldehyde.<br><br>

scholarly journals Secondary Phosphine Oxide Functionalized Gold Clusters and their Application in Photoelectrocatalytic Hydrogenation Reactions

2020 ◽  
Author(s):  
Yu Wang ◽  
Xiao-He Liu ◽  
Rongbin Wang ◽  
Beatrice Cula ◽  
Zhe-Ning Chen ◽  
...  
Keyword(s):  
Phosphine Oxide ◽  
Crucial Role ◽  
Density Functional ◽  
Secondary Phosphine ◽  
Functional Theory ◽  
New Family ◽  
Type Semiconductor ◽  
Hydrogenation Reactions ◽  
P Type

Ligands in ligand-protected metal clusters play a crucial role, not only because of their interaction with the metal core, but also because of the functionality they provide to the cluster. Here, we report the utilization of secondary phosphine oxide (SPO), as a new family of functional ligands, for the preparation of an undecagold cluster Au11-SPO. Different from the common used phosphine ligand (i.e. triphenylphosphine, TPP), the SPOs in Au11-SPO work as electron-withdrawing anionic ligands. While coordinating to gold via the phosphorus atom, the SPO ligand keeps its O atom available to act as a nucleophile. Upon photoexcitation, the clusters are found to inject holes into p-type semiconductors (here bismuth oxide is used as a model), sensitizing the p-type semiconductor in a different way compared to the photosensitization of a n-type semiconductor. Furthermore, the Au11-SPO/Bi2O3 photocathode exhibits a much higher activity towards the hydrogenation of benzaldehyde than a TPP-protected Au 11 sensitized Bi2O3 photocathode. Control experiments and<br>density functional theory studies point to the crucial role of the cooperation between gold and the SPO ligands on the selectivity towards the hydrogenation of the C=O group in benzaldehyde.<br><br>

scholarly journals Secondary Phosphine Oxide Functionalized Gold Clusters and their Application in Photoelectrocatalytic Hydrogenation Reactions

2020 ◽  
Author(s):  
Yu Wang ◽  
Xiao-He Liu ◽  
Rongbin Wang ◽  
Beatrice Cula ◽  
Zhe-Ning Chen ◽  
...  
Keyword(s):  
Phosphine Oxide ◽  
Crucial Role ◽  
Density Functional ◽  
Secondary Phosphine ◽  
Functional Theory ◽  
New Family ◽  
Type Semiconductor ◽  
Hydrogenation Reactions ◽  
P Type

Ligands in ligand-protected metal clusters play a crucial role, not only because of their interaction with the metal core, but also because of the functionality they provide to the cluster. Here, we report the utilization of secondary phosphine oxide (SPO), as a new family of functional ligands, for the preparation of an undecagold cluster Au11-SPO. Different from the common used phosphine ligand (i.e. triphenylphosphine, TPP), the SPOs in Au11-SPO work as electron-withdrawing anionic ligands. While coordinating to gold via the phosphorus atom, the SPO ligand keeps its O atom available to act as a nucleophile. Upon photoexcitation, the clusters are found to inject holes into p-type semiconductors (here bismuth oxide is used as a model), sensitizing the p-type semiconductor in a different way compared to the photosensitization of a n-type semiconductor. Furthermore, the Au11-SPO/Bi2O3 photocathode exhibits a much higher activity towards the hydrogenation of benzaldehyde than a TPP-protected Au 11 sensitized Bi2O3 photocathode. Control experiments and<br>density functional theory studies point to the crucial role of the cooperation between gold and the SPO ligands on the selectivity towards the hydrogenation of the C=O group in benzaldehyde.<br><br>

scholarly journals Concerted Chemoselective Hydrogenation of Acrolein on Secondary Phosphine Oxide Decorated Gold Nanoparticles

ACS Catalysis ◽  
2017 ◽  
Vol 7 (6) ◽  
pp. 3949-3954 ◽  
Author(s):  
Neyvis Almora-Barrios ◽  
Israel Cano ◽  
Piet W. N. M. van Leeuwen ◽  
Núria López
Keyword(s):  
Gold Nanoparticles ◽  
Phosphine Oxide ◽  
Secondary Phosphine ◽  
Chemoselective Hydrogenation
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