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Title: Reduction-Triggered Self-Assembly of Nanoscale Molybdenum Oxide Molecular Clusters

Abstract

The understanding of the formation mechanism of giant molecular clusters is an essential requirement for rational design and synthesis of cluster-based nano-materials with required morphologies and functionalities. Here, typical synthetic reactions of a 2.9 nm spherical molybdenum oxide cluster, {Mo132} (Formula: [MoVI72MoV60O372(CH3COO)30(H2O)72]42-) with systematically varied reaction parameters have been fully explored for the morphologies and concentration of products, reduction of metal centers, and chemical environments of organic ligands. The growth of these clusters shows a typical sigmoid curve, suggesting a general multi-step self-assembly mechanism for the formation of giant molecular clusters. The reaction starts with a lag phase period when partial MoVI centers of molybdate precursors are reduced to form {MoV2(acetate)} structures under the coordination effect of the acetate groups. Once the concentration of {MoV2(acetate)} reaches a critical value, it triggers the co-assembly of MoV and MoVI species into the giant clusters.

Authors:
 [1];  [2];  [3];  [1];  [1];  [3];  [4];  [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Inst. Max Von Laue Paul Langevin, Grenoble (France)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS); Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1324096
Alternate Identifier(s):
OSTI ID: 1368099
Grant/Contract Number:  
AC05-00OR22725; AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the American Chemical Society
Additional Journal Information:
Journal Volume: 138; Journal Issue: 33; Journal ID: ISSN 0002-7863
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Yin, Panchao, Wu, Bin, Li, Tao, Bonnesen, Peter V., Hong, Kunlun, Seifert, Soenke, Porcar, Lionel, Do, Changwoo, and Keum, Jong Kahk. Reduction-Triggered Self-Assembly of Nanoscale Molybdenum Oxide Molecular Clusters. United States: N. p., 2016. Web. doi:10.1021/jacs.6b05882.
Yin, Panchao, Wu, Bin, Li, Tao, Bonnesen, Peter V., Hong, Kunlun, Seifert, Soenke, Porcar, Lionel, Do, Changwoo, & Keum, Jong Kahk. Reduction-Triggered Self-Assembly of Nanoscale Molybdenum Oxide Molecular Clusters. United States. https://doi.org/10.1021/jacs.6b05882
Yin, Panchao, Wu, Bin, Li, Tao, Bonnesen, Peter V., Hong, Kunlun, Seifert, Soenke, Porcar, Lionel, Do, Changwoo, and Keum, Jong Kahk. Tue . "Reduction-Triggered Self-Assembly of Nanoscale Molybdenum Oxide Molecular Clusters". United States. https://doi.org/10.1021/jacs.6b05882. https://www.osti.gov/servlets/purl/1324096.
@article{osti_1324096,
title = {Reduction-Triggered Self-Assembly of Nanoscale Molybdenum Oxide Molecular Clusters},
author = {Yin, Panchao and Wu, Bin and Li, Tao and Bonnesen, Peter V. and Hong, Kunlun and Seifert, Soenke and Porcar, Lionel and Do, Changwoo and Keum, Jong Kahk},
abstractNote = {The understanding of the formation mechanism of giant molecular clusters is an essential requirement for rational design and synthesis of cluster-based nano-materials with required morphologies and functionalities. Here, typical synthetic reactions of a 2.9 nm spherical molybdenum oxide cluster, {Mo132} (Formula: [MoVI72MoV60O372(CH3COO)30(H2O)72]42-) with systematically varied reaction parameters have been fully explored for the morphologies and concentration of products, reduction of metal centers, and chemical environments of organic ligands. The growth of these clusters shows a typical sigmoid curve, suggesting a general multi-step self-assembly mechanism for the formation of giant molecular clusters. The reaction starts with a lag phase period when partial MoVI centers of molybdate precursors are reduced to form {MoV2(acetate)} structures under the coordination effect of the acetate groups. Once the concentration of {MoV2(acetate)} reaches a critical value, it triggers the co-assembly of MoV and MoVI species into the giant clusters.},
doi = {10.1021/jacs.6b05882},
journal = {Journal of the American Chemical Society},
number = 33,
volume = 138,
place = {United States},
year = {Tue Jul 26 00:00:00 EDT 2016},
month = {Tue Jul 26 00:00:00 EDT 2016}
}

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