Journal article
Hexagonal Transition-Metal Chalcogenide Nanoflakes with Pronounced Lateral Quantum Confinement
Angewandte Chemie (International ed.), Vol.53(46), pp.12624-12628
11/10/2014
DOI: 10.1002/anie.201404704
PMID: 25213643
Abstract
Transition-metal chalcogenide (TMC) nanoflakes of composition MX2 (where M=Ti, Zr and Hf; X=S and Se) crystallize preferentially in equilateral hexagons and exhibit a pronounced lateral quantum confinement. The hexagonal shape of octahedral (1T) TMC nanoflakes is the result of charge localization at the edges/vertices and the resulting Coulomb repulsion. Independent of their size, all nanoflakes have the MnX2n-2 stoichiometry and thus an unoxidized metal center which results in dopant states. These states become relevant for small nanoflakes and lead to metallic character, but for larger nanoflakes (>6nm) the 2D monolayer properties dominate. Finally, coordination of Lewis bases at the nanoflake edges has no significant effect on the electronic structure of these species confirming the viability of colloidal synthetic approaches.
Details
- Title: Subtitle
- Hexagonal Transition-Metal Chalcogenide Nanoflakes with Pronounced Lateral Quantum Confinement
- Creators
- Pere Miro - Constructor UniversityJae Hyo Han - Yonsei UniversityJinwoo Cheon - Yonsei UniversityThomas Heine - Constructor University
- Resource Type
- Journal article
- Publication Details
- Angewandte Chemie (International ed.), Vol.53(46), pp.12624-12628
- Publisher
- Wiley
- DOI
- 10.1002/anie.201404704
- PMID
- 25213643
- ISSN
- 1433-7851
- eISSN
- 1521-3773
- Number of pages
- 5
- Grant note
- N62909-13-1-N222 / Office of Naval Research Global; Office of Naval Research GA 251149; GA 317451 / European Commission; European Union (EU); European Commission Joint Research Centre 2010-0018286 / KRF Creative Research Initiative of Korea BAA-AFOSR-2013-0001-BRI-1 / Air Force Office of Scientific Research; United States Department of Defense; Air Force Office of Scientific Research (AFOSR) HE 3543/18-1 / German Research Council (Deutsche Forschungsgemeinschaft); German Research Foundation (DFG)
- Language
- English
- Date published
- 11/10/2014
- Academic Unit
- Chemistry
- Record Identifier
- 9984618642602771
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