نتایج جستجو برای: au13 nanocluster

تعداد نتایج: 1001  

Journal: :The Journal of Chemical Physics 2008

Journal: :Chemical communications 2016
Ye Teng Xiaofang Jia Shan Zhang Jinbo Zhu Erkang Wang

In this work, we developed a novel light-up nanocluster beacon (NCB) based on shuttling dark silver nanoclusters (NCs) to a bright scaffold through hybridization. The fluorescence enhancement was as high as 70-fold when the two templates were on the opposite sides of the duplexes, enabling sensitive and selective detection of DNA.

Journal: :Nanoscale 2014
Man-Bo Li Shi-Kai Tian Zhikun Wu

An active, recoverable, and recyclable nanocluster catalyst, Au25(SR)18(-), has been developed to catalyze the formation of α,β-unsaturated ketones or aldehydes from propargylic acetates. The catalytic process has been proposed to be initialized by an SN2' addition of OH(-). Moreover, a dramatic solvent effect was observed, for which a rational explanation was provided.

Journal: :Chemical communications 2015
Wei-Chao Chen Chao Qin Yang-Guang Li Hong-Ying Zang Kui-Zhan Shao Zhong-Min Su En-Bo Wang Hong-Sheng Liu

Two unprecedented tetrameric selenotungstates based on different Wells-Dawson-type fragments have been obtained: the {Sn7Se8W54} nanocluster exhibiting photocatalytic H2 evolution activity and the {Sn16Se11W56} chain, which are the first dimethyltin-functionalized selenotungstates reported and contain the unique {β-Se2W15} and {γ-Se2W14} building blocks, respectively.

Journal: :Journal of Materials Research 2022

Abstract The optoelectronic properties of several Ag 2 S/graphene and FeS /graphene nanostructures are examined through density functional theory calculations including dispersion forces. First, we analyzed the electronic structure S nanocluster models, as prototypes quantum dots, focusing on absorption spectra. In case nanoparticle, both ferro- antiferromagnetic arrangements were considered. T...

Journal: :Journal of the American Chemical Society 2013
Jon Ustarroz Joshua A Hammons Thomas Altantzis Annick Hubin Sara Bals Herman Terryn

The early stages of nanocrystal nucleation and growth are still an active field of research and remain unrevealed. In this work, by the combination of aberration-corrected transmission electron microscopy (TEM) and electrochemical characterization of the electrodeposition of different metals, we provide a complete reformulation of the Volmer-Weber 3D island growth mechanism, which has always be...

Journal: :Nanoscale 2012
Yukatsu Shichibu Kai Suzuki Katsuaki Konishi

Synthesis of molecular gold clusters through a post-synthetic scheme involving HCl-promoted nuclearity convergence was examined with various phosphine ligands. Systematic studies with a series of bis(diphenylphosphino) ligands (Ph(2)P-(CH(2))(m)-PPh(2)) using electrospray ionization mass spectrometry (ESI-MS) and electronic absorption spectroscopy demonstrated that the use of dppp (m = 3), dppb...

2017
Y. Qiang Sitaram Jaswal Yi Liu H. Haberland David J. Sellmyer D. J. Sellmyer

Journal: :Journal of materials chemistry. A, Materials for energy and sustainability 2021

Ultrafast synthesis of a robust Ag-nanocluster metal–organic framework composite with superior photocatalytic performances, even working under continuous flow in the removal emerging contaminants from water.

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