scholarly journals Thiacalix[4]arene: New protection for metal nanoclusters

2016 ◽  
Vol 2 (8) ◽  
pp. e1600323 ◽  
Author(s):  
Zong-Jie Guan ◽  
Jiu-Lian Zeng ◽  
Zi-Ang Nan ◽  
Xian-Kai Wan ◽  
Yu-Mei Lin ◽  
...  
Keyword(s):  
Optical Properties ◽  
Silver Atom ◽  
Macrocyclic Ligands ◽  
Organic Ligands ◽  
Silver Nanoclusters ◽  
Metal Nanoclusters ◽  
Silver Nanocluster ◽  
Metal Nanocluster ◽  
Rigid Shell ◽  
Silver Core

Surface organic ligands are critical for the formation and properties of atomically precise metal nanoclusters. In contrast to the conventionally used protective ligands such as thiolates and phosphines, thiacalix[4]arene has been used in the synthesis of a silver nanocluster, [Ag35(H2L)2(L)(C≡CBut)16](SbF6)3, (H4L, p-tert-butylthiacalix[4]-arene). This is the first structurally determined calixarene-protected metal nanocluster. The chelating and macrocyclic effects make the thiacalix[4]arene a rigid shell that protects the silver core. Upon addition or removal of one silver atom, the Ag35 cluster can be transformed to Ag36 or Ag34 species, and the optical properties are changed accordingly. The successful use of thiacalixarene in the synthesis of well-defined silver nanoclusters suggests a bright future for metal nanoclusters protected by macrocyclic ligands.

A DFT study on an alkali atom doped decahedral silver nanocluster for potential application in opto-electronics and catalysis

RSC Advances ◽  
2015 ◽  
Vol 5 (10) ◽  
pp. 7665-7672 ◽  
Author(s):  
Shaikat Debnath ◽  
Suhana Mohd Said ◽  
Muhammad Faris Roslan ◽  
Mohd Faizul Mohd Sabri ◽  
Bui Duc Long
Keyword(s):  
Optical Properties ◽  
Potential Application ◽  
Alkali Metals ◽  
Alkali Atom ◽  
Silver Nanoclusters ◽  
Dft Study ◽  
Electronic And Optical Properties ◽  
Silver Nanocluster

Electronic and optical properties of silver–alkali metals alloys are explored and lithium doped silver nanoclusters are found to have excellent potential for opto-electronics and catalysis.

Facile preparation of silver nanocluster self-assemblies with aggregation-induced emission by equilibrium shifting

Nanoscale ◽  
2021 ◽  
Author(s):  
Lianyu Li ◽  
Weiyao Xi ◽  
Irshad Hussain ◽  
Meiling Chen ◽  
Bien Tan
Keyword(s):  
Self Assembly ◽  
Vibration Modes ◽  
Metal Nanoclusters ◽  
Aggregation Induced Emission ◽  
Silver Nanocluster ◽  
Metal Nanocluster ◽  
Facile Preparation

Aggregation-induced emission is a promising pathway to get high photoluminescence from metal nanocluster assemblies. Self-assembly of metal nanoclusters with regular morphologies can restrict the rotation and vibration modes of the...

scholarly journals Optical Properties of Multi-Component Antimony-Silver Nanoclusters Formed in Silica by Sequential Ion Implantation

1995 ◽  
Vol 396 ◽  
Author(s):  
R.A. Zuhr ◽  
R.H. Magruder ◽  
T.S. Anderson
Keyword(s):  
Optical Properties ◽  
Electronic Structure ◽  
Metal Ion ◽  
Nonlinear Optical ◽  
Nonlinear Response ◽  
Optical Measurements ◽  
Silver Nanoclusters ◽  
Single Element ◽  
Metal Nanoclusters ◽  
Linear And Nonlinear

AbstractThe linear and nonlinear optical properties of nanometer dimension metal colloids embedded in a dielectric depend explicitly on the electronic structure of the metal nanoclusters. The ability to control the electronic structure of the nanoclusters may make it possible to tailor the optical properties for enhanced performance. By sequential implantation of different metal ion species multi-component nanoclusters can be formed with significantly different optical properties than single element metal nanoclusters. We report the formation of multi-component Sb/Ag nanoclusters in silica by sequential implantation of Sb and Ag. Samples were implanted with relative ratios of Sb to Ag of 1:1 and 3:1. A second set of samples was made by single element implantations of Ag and Sb at the same energies and doses used to make the sequentially implanted samples. All samples were characterized using RBS and both linear and nonlinear optical measurements. The presence of both ions significantly modifies the optical properties of the composites compared to the single element nanocluster glass composites. In the sequentially implanted samples the optical density is lower, and the strong surface plasmon resonance absorption observed in the Ag implanted samples is not present. At the same time the nonlinear response of the these samples is larger than for the samples implanted with Sb alone, suggesting that the addition of Ag can increase the nonlinear response of the Sb particles formed. The results are consistent with the formation of multi-component Sb/Ag colloids.

scholarly journals Optical Properties of Multi-Component Cadmium-Silver Nanocluster Composites Formed in Silica by Sequential Ion Implantation

1996 ◽  
Vol 438 ◽  
Author(s):  
R. A. Zuhr ◽  
R. H. Magruder ◽  
T. S. Anderson
Keyword(s):  
Optical Properties ◽  
Effective Medium Theory ◽  
Single Element ◽  
Metal Nanoclusters ◽  
Medium Theory ◽  
Silver Nanocluster ◽  
Nominal Dose ◽  
Transmission Electron ◽  
Metal Colloid ◽  
Ion Species

AbstractThe formation and optical properties of nanometer dimension metal colloid composites formed by the sequential implantation of Cd then Ag and by single element implantations of Cd and Ag in silica were characterized by transmission electron microscopy (TEM) and optical spectroscopy. A nominal dose of 6×1016 ions/cm2 as determined by current integration was used for both ion species. The doses used for the sequential implantations were a 1 to 1 ratio of Cd to Ag. Sequential implantations of Cd and Ag led to the formation of both multi-component metal nanoclusters and elemental nanoclusters. The electron diffraction measurements indicated that the polycrystalline particles of Ag5Cd8 and elemental Ag were formed. The optical response was consistent with results expected from effective medium theory.

Silver nanocluster-lightened hybridization chain reaction

RSC Advances ◽  
2016 ◽  
Vol 6 (62) ◽  
pp. 57502-57506 ◽  
Author(s):  
Lin Liu ◽  
Qing Li ◽  
Li-Juan Tang ◽  
Ru-Qin Yu ◽  
Jian-Hui Jiang
Keyword(s):  
Nucleic Acid ◽  
Silver Nanoclusters ◽  
Hybridization Chain Reaction ◽  
Label Free ◽  
Chain Reaction ◽  
Silver Nanocluster ◽  
Turn On ◽  
Nucleic Acid Assays

A hybridization chain reaction (HCR) lightened by DNA-stabilized silver nanoclusters (AgNCs) as a label-free and turn on fluorescence platform for nucleic acid assays.

Tuning Structural and Optical Properties of Thiolate-Protected Silver Clusters by Formation of a Silver Core with Confined Electrons

2013 ◽  
Vol 117 (28) ◽  
pp. 14824-14831 ◽  
Author(s):  
Lars Gell ◽  
Alexander Kulesza ◽  
Jens Petersen ◽  
Merle I. S. Röhr ◽  
Roland Mitrić ◽  
...  
Keyword(s):  
Optical Properties ◽  
Silver Clusters ◽  
Structural And Optical Properties ◽  
Silver Core

Carbon nanopore and anchoring site–assisted general construction of encapsulated metal (Rh, Ru, Ir) nanoclusters for highly efficient hydrogen evolution in pH–universal electrolytes and natural seawater

2021 ◽  
Author(s):  
Rong Ding ◽  
Tingting Yan ◽  
Yi Wang ◽  
Yan Long ◽  
Guangyin Fan
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
General Construction ◽  
Natural Seawater ◽  
Metal Nanoclusters ◽  
Hydrogen Economy ◽  
Ligand Free ◽  
Metal Nanocluster ◽  
Substantial Interest ◽  
Free Metal

Metal–nanocluster–catalyzed hydrogen evolution through water splitting has received substantial interest toward the implementation of hydrogen economy. However, the general and efficient fabrication of well–defined and ligand–free metal nanoclusters (NCs) with...

scholarly journals Unusually large fluorescence quantum yield for a near-infrared emitting DNA-stabilized silver nanocluster

2020 ◽  
Vol 56 (47) ◽  
pp. 6384-6387
Author(s):  
Vlad A. Neacşu ◽  
Cecilia Cerretani ◽  
Mikkel B. Liisberg ◽  
Steven M. Swasey ◽  
Elisabeth G. Gwinn ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Fluorescence Quantum Yield ◽  
Near Infrared ◽  
Infrared Region ◽  
Silver Nanoclusters ◽  
Silver Nanocluster ◽  
Dna Strands ◽  
Near Infrared Region ◽  
High Fluorescence ◽  
High Fluorescence Quantum Yield

Silver nanoclusters stabilized by 5′-CCCGGAGAAG-3′ DNA strands display an unusually high fluorescence quantum yield in the near-infrared region.

Optical Properties of Diamond-Like Carbon Films Modified by Platinum

2013 ◽  
Vol 660 ◽  
pp. 47-50 ◽  
Author(s):  
Oleg Prikhodko ◽  
Nurlan Manabaev ◽  
Nazim Guseynov ◽  
Suyumbika Maksimova ◽  
Svetlana Mikhailova ◽  
...  
Keyword(s):  
Optical Properties ◽  
Plasmon Resonance ◽  
Carbon Films ◽  
Diamond Like Carbon ◽  
Metal Nanoclusters ◽  
Plasma Sputtering ◽  
Ion Plasma

ion plasma sputtering, carbon diamond-like films, modification, metal nanoclusters, optical properties, plasmon resonance.

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