Tandem intercalation strategy for single-layer nanosheets as an effective alternative to conventional exfoliation processes

Sohee Jeong; Dongwon Yoo; Minji Ahn; Pere Miro; Thomas Heine; Jinwoo Cheon

doi:10.1038/ncomms6763

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Tandem intercalation strategy for single-layer nanosheets as an effective alternative to conventional exfoliation processes

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Tandem intercalation strategy for single-layer nanosheets as an effective alternative to conventional exfoliation processes

Sohee Jeong, Dongwon Yoo, Minji Ahn, Pere Miro, Thomas Heine and Jinwoo Cheon

Nature communications, Vol.6(1), pp.5763-5763

01/09/2015

DOI: 10.1038/ncomms6763

PMID: 25575047

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Abstract

Simple and effective generation of transition metal chalcogenides (TMCs) in a single-layer form has been a challenging task. Here we present a tandem molecular intercalation (TMI) as a new exfoliation concept for producing single-layer TMCs from multi-layer colloidal TMC nanostructures in solution phase. TMI requires tandem Lewis base intercalates, where short 'initiator' molecules first intercalate into TMCs to open up the interlayer gap, and the long 'primary' molecules then bring the gap to full width so that a random mixture of intercalates overcomes the interlayer force. Spontaneous exfoliation then yields single-layer TMCs. The TMI process is uniquely advantageous because it works in a simple one-step process under safe and mild conditions (that is, room temperature without sonication or H-2 generation). With the appropriate intercalates, we have successfully generated single-layer nanostructures of group IV (TiS2, ZrS2), group V (NbS2) and VI (WSe2, MoS2) TMCs.

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Title: Subtitle: Tandem intercalation strategy for single-layer nanosheets as an effective alternative to conventional exfoliation processes
Creators: Sohee Jeong - Yonsei University
Dongwon Yoo - Yonsei University
Minji Ahn - Yonsei University
Pere Miro - Constructor University
Thomas Heine - Constructor University
Jinwoo Cheon - Yonsei University
Resource Type: Journal article
Publication Details: Nature communications, Vol.6(1), pp.5763-5763
DOI: 10.1038/ncomms6763
PMID: 25575047
NLM abbreviation: Nat Commun
ISSN: 2041-1723
eISSN: 2041-1723
Publisher: Springer Nature
Number of pages: 7
Grant note: 2010-0018286 / National Creative Research Initiatives Program; Ministry of Education, Science & Technology (MEST), Republic of Korea
Language: English
Date published: 01/09/2015
Academic Unit: Chemistry
Record Identifier: 9984618525702771

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