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Title: Formation of pseudomorphic nanocages from Cu2O nanocrystals through anion exchange reactions.
Authors: Wu, Hsin-Lun
Sato, Ryota  kyouindb  KAKEN_id  orcid (unconfirmed)
Yamaguchi, Atsushi
Kimura, Masato
Haruta, Mitsutaka  kyouindb  KAKEN_id  orcid (unconfirmed)
Kurata, Hiroki  kyouindb  KAKEN_id  orcid (unconfirmed)
Teranishi, Toshiharu  kyouindb  KAKEN_id  orcid (unconfirmed)
Author's alias: 呉, 欣倫
佐藤, 良太
山口, 睦
木村, 仁士
治田, 充貴
倉田, 博基
寺西, 利治
Issue Date: 18-Mar-2016
Publisher: American Association for the Advancement of Science
Journal title: Science
Volume: 351
Issue: 6279
Start page: 1306
End page: 1310
Abstract: The crystal structure of ionic nanocrystals (NCs) is usually controlled through reaction temperature, according to their phase diagram. We show that when ionic NCs with different shapes, but identical crystal structures, were subjected to anion exchange reactions under ambient conditions, pseudomorphic products with different crystal systems were obtained. The shape-dependent anionic framework (surface anion sublattice and stacking pattern) of Cu2O NCs determined the crystal system of anion-exchanged products of CuxS nanocages. This method enabled us to convert a body-centered cubic lattice into either a face-centered cubic or a hexagonally close-packed lattice to form crystallographically unusual, multiply twinned structures. Subsequent cation exchange reactions produced CdS nanocages while preserving the multiply-twinned structures. A high-temperature stable phase such as wurtzite ZnS was also obtained with this method at ambient conditions.
Description: 常温・常圧でのイオン性ナノ結晶の結晶構造制御に成功 -新しい光エネルギー変換材料開発に期待-. 京都大学プレスリリース. 2016-03-18.
Rights: © 2016 American Association for the Advancement of Science. All rights Reserved.
This is not the published version. Please cite only the published version.
DOI(Published Version): 10.1126/science.aad5520
PubMed ID: 26989249
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