Chiral Functionalization of an Atomically Precise Noble Metal Cluster: Insights into the Origin of Chirality and Photoluminescence

ACS Nano ◽  
2020 ◽  
Vol 14 (8) ◽  
pp. 9687-9700 ◽  
Author(s):  
Kumaranchira Ramankutty Krishnadas ◽  
Luca Sementa ◽  
Marco Medves ◽  
Alessandro Fortunelli ◽  
Mauro Stener ◽  
...  
Keyword(s):  
Noble Metal ◽  
Metal Cluster ◽  
Noble Metal Cluster ◽  
Origin Of Chirality

scholarly journals Application of noble metal cluster to PMMA resin and influence on mechanical properties and color

2015 ◽  
Vol 34 (6) ◽  
pp. 781-788 ◽  
Author(s):  
Yusuke AOYAGI ◽  
Taira MIYASAKA ◽  
Nobuo ANDO
Keyword(s):  
Mechanical Properties ◽  
Noble Metal ◽  
Metal Cluster ◽  
Noble Metal Cluster ◽  
Pmma Resin

Direct Imaging of Lattice Planes in Atomically Precise Noble Metal Cluster Crystals Using a Conventional Transmission Electron Microscope

2021 ◽  
Author(s):  
Ananthu Mahendranath ◽  
Biswajit Mondal ◽  
Sugi K. Shivan ◽  
T. Pradeep
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Noble Metal ◽  
Metal Cluster ◽  
Simple Method ◽  
Transmission Electron ◽  
Structural Details ◽  
Noble Metal Cluster ◽  
Lattice Planes ◽  
Conventional Transmission Electron Microscope

Imaging finer structural details of atomically precise noble metal cluster crystals has been difficult with electron microscopy, owing to their extreme beam sensitivity. Here we present a simple method whereby...

Properties of noble metal cluster ions Xpn (X = Cu, Ag, Au; n < 20; p = −1, + 1, + 2) investigated by LMIS technique

1985 ◽  
Vol 156 ◽  
pp. 451-456 ◽  
Author(s):  
P. Joyes ◽  
P. Sudraud
Keyword(s):  
Noble Metal ◽  
Metal Cluster ◽  
Cluster Ions ◽  
Noble Metal Cluster

[Au25(SR)18]22−: a noble metal cluster dimer in the gas phase

2016 ◽  
Vol 52 (54) ◽  
pp. 8397-8400 ◽  
Author(s):  
Ananya Baksi ◽  
Papri Chakraborty ◽  
Shridevi Bhat ◽  
Ganapati Natarajan ◽  
Thalappil Pradeep
Keyword(s):  
Mass Spectrometry ◽  
Electrospray Ionization ◽  
Gas Phase ◽  
Noble Metal ◽  
Ion Mobility ◽  
Electrospray Ionization Mass Spectrometry ◽  
Metal Cluster ◽  
Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Noble Metal Cluster

Dimeric and trimeric Au25(SR)18 have been detected experimentally by electrospray ionization mass spectrometry (ESI MS) and separated by ion mobility (IM).

Atomically Precise Noble Metal Cluster-Assembled Superstructures in Water: Luminescence Enhancement and Sensing

2020 ◽  
Vol 124 (40) ◽  
pp. 22298-22303
Author(s):  
Abhijit Nag ◽  
Papri Chakraborty ◽  
Athira Thacharon ◽  
Ganesan Paramasivam ◽  
Biswajit Mondal ◽  
...  
Keyword(s):  
Noble Metal ◽  
Metal Cluster ◽  
Luminescence Enhancement ◽  
Noble Metal Cluster

scholarly journals Polymer-Noble Metal Cluster Hybrids.

Kobunshi ◽  
1994 ◽  
Vol 43 (12) ◽  
pp. 852-855 ◽  
Author(s):  
Yukimichi Nakao
Keyword(s):  
Noble Metal ◽  
Metal Cluster ◽  
Noble Metal Cluster

scholarly journals Theoretical study of structural and optical properties of noble metal cluster–dipeptide hybrids at defect centers of MgO

2012 ◽  
Vol 14 (26) ◽  
pp. 9330 ◽  
Author(s):  
Alexander Kulesza ◽  
Roland Mitrić ◽  
Vlasta Bonačić-Koutecký
Keyword(s):  
Optical Properties ◽  
Noble Metal ◽  
Theoretical Study ◽  
Metal Cluster ◽  
Structural And Optical Properties ◽  
Defect Centers ◽  
Noble Metal Cluster

scholarly journals Rhodium Oxide Surface-Loaded Gas Sensors

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 892 ◽  
Author(s):  
Anna Staerz ◽  
Inci Boehme ◽  
David Degler ◽  
Mounib Bahri ◽  
Dmitry Doronkin ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Noble Metal ◽  
Noble Metals ◽  
Metal Cluster ◽  
Empirical Work ◽  
Oxide Surface ◽  
Metallic State ◽  
X Ray ◽  
Rhodium Clusters ◽  
Sensing Characteristics

In order to increase their stability and tune-sensing characteristics, metal oxides are often surface-loaded with noble metals. Although a great deal of empirical work shows that surface-loading with noble metals drastically changes sensing characteristics, little information exists on the mechanism. Here, a systematic study of sensors based on rhodium-loaded WO3, SnO2, and In2O3—examined using X-ray diffraction, high-resolution scanning transmission electron microscopy, direct current (DC) resistance measurements, operando diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy, and operando X-ray absorption spectroscopy—is presented. Under normal sensing conditions, the rhodium clusters were oxidized. Significant evidence is provided that, in this case, the sensing is dominated by a Fermi-level pinning mechanism, i.e., the reaction with the target gas takes place on the noble-metal cluster, changing its oxidation state. As a result, the heterojunction between the oxidized rhodium clusters and the base metal oxide was altered and a change in the resistance was detected. Through measurements done in low-oxygen background, it was possible to induce a mechanism switch by reducing the clusters to their metallic state. At this point, there was a significant drop in the overall resistance, and the reaction between the target gas and the base material was again visible. For decades, noble metal loading was used to change the characteristics of metal-oxide-based sensors. The study presented here is an attempt to clarify the mechanism responsible for the change. Generalities are shown between the sensing mechanisms of different supporting materials loaded with rhodium, and sample-specific aspects that must be considered are identified.

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