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A macrocycle-assisted nanoparticlization process for bulk Ag(2)S
We report herein a new nanoparticlization process for the bulk-to-nano transformation of Ag(2)S by incorporating both top-down and bottom-up approaches. Bulk Ag(2)S was dissolved in solution with the assistance of a macrocyclic ligand, hexamethylazacalix[6]pyridine (Py[6]), to produce polynuclear si...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Royal Society of Chemistry
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5491957/ https://www.ncbi.nlm.nih.gov/pubmed/28706632 http://dx.doi.org/10.1039/c4sc01884b |
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author | He, Xin Wang, Yuechao Gao, Cai-Yan Jiang, Hong Zhao, Liang |
author_facet | He, Xin Wang, Yuechao Gao, Cai-Yan Jiang, Hong Zhao, Liang |
author_sort | He, Xin |
collection | PubMed |
description | We report herein a new nanoparticlization process for the bulk-to-nano transformation of Ag(2)S by incorporating both top-down and bottom-up approaches. Bulk Ag(2)S was dissolved in solution with the assistance of a macrocyclic ligand, hexamethylazacalix[6]pyridine (Py[6]), to produce polynuclear silver sulfide cluster aggregates. All Ag–S cluster aggregates obtained in three crystalline complexes were protected by Py[6] macrocycles. Removing the protective Py[6] macrocycles by protonation led to the generation of unconventional Ag–S nanoparticles with a large energy gap. Theoretical calculations by a hybrid DFT method demonstrated that the silver sulfide clusters with high Ag/S ratio exhibited more localized HOMO–LUMO orbitals, which consequently enlarged their band gap energies. These experimental and theoretical studies broaden our understanding of the fabrication of nanomaterials by virtue of the advantages of both bottom-up and top-down methods and meanwhile provide a viable means of adjusting the band gap of binary nanomaterials independent of their size. |
format | Online Article Text |
id | pubmed-5491957 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-54919572017-07-13 A macrocycle-assisted nanoparticlization process for bulk Ag(2)S He, Xin Wang, Yuechao Gao, Cai-Yan Jiang, Hong Zhao, Liang Chem Sci Chemistry We report herein a new nanoparticlization process for the bulk-to-nano transformation of Ag(2)S by incorporating both top-down and bottom-up approaches. Bulk Ag(2)S was dissolved in solution with the assistance of a macrocyclic ligand, hexamethylazacalix[6]pyridine (Py[6]), to produce polynuclear silver sulfide cluster aggregates. All Ag–S cluster aggregates obtained in three crystalline complexes were protected by Py[6] macrocycles. Removing the protective Py[6] macrocycles by protonation led to the generation of unconventional Ag–S nanoparticles with a large energy gap. Theoretical calculations by a hybrid DFT method demonstrated that the silver sulfide clusters with high Ag/S ratio exhibited more localized HOMO–LUMO orbitals, which consequently enlarged their band gap energies. These experimental and theoretical studies broaden our understanding of the fabrication of nanomaterials by virtue of the advantages of both bottom-up and top-down methods and meanwhile provide a viable means of adjusting the band gap of binary nanomaterials independent of their size. Royal Society of Chemistry 2015-01-01 2014-09-11 /pmc/articles/PMC5491957/ /pubmed/28706632 http://dx.doi.org/10.1039/c4sc01884b Text en This journal is © The Royal Society of Chemistry 2014 https://creativecommons.org/licenses/by-nc/3.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial 3.0 Unported License (http://creativecommons.org/licenses/by-nc/3.0/ (https://creativecommons.org/licenses/by-nc/3.0/) ) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Chemistry He, Xin Wang, Yuechao Gao, Cai-Yan Jiang, Hong Zhao, Liang A macrocycle-assisted nanoparticlization process for bulk Ag(2)S |
title | A macrocycle-assisted nanoparticlization process for bulk Ag(2)S
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title_full | A macrocycle-assisted nanoparticlization process for bulk Ag(2)S
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title_fullStr | A macrocycle-assisted nanoparticlization process for bulk Ag(2)S
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title_full_unstemmed | A macrocycle-assisted nanoparticlization process for bulk Ag(2)S
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title_short | A macrocycle-assisted nanoparticlization process for bulk Ag(2)S
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title_sort | macrocycle-assisted nanoparticlization process for bulk ag(2)s |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5491957/ https://www.ncbi.nlm.nih.gov/pubmed/28706632 http://dx.doi.org/10.1039/c4sc01884b |
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