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Inorganic Molecular Chain Nb 2 Se 9 : Synthesis of Bulk Crystal and One‐Atom‐Thick Level Exfoliation
Author(s) -
Oh Seungbae,
Chae Sudong,
Kim Bum Jun,
Siddiqa Akhtar J.,
Choi Kyung Hwan,
Jang WooSung,
Lee Keun Ho,
Kim Hyo Yeol,
Lee Dong Kyu,
Kim YoungMin,
Yu Hak Ki,
Choi JaeYoung
Publication year - 2018
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201800451
Subject(s) - dangling bond , exfoliation joint , materials science , covalent bond , atom (system on chip) , dispersion (optics) , crystal (programming language) , niobium , crystallography , thermal stability , chain (unit) , crystal structure , phase (matter) , nanotechnology , chemistry , metallurgy , silicon , graphene , organic chemistry , programming language , physics , astronomy , computer science , optics , embedded system
A novel one‐dimensional (1D) inorganic material, Nb 2 Se 9 , which can be separated into atomic‐level, is synthesized through chemical reaction between Nb and Se sources. Nb 2 Se 9 and Se crystals are formed under an excess Se condition to avoid other phase such as NbSe 3 , and the residual Se can be removed by heat treatment; thus, high‐purity Nb 2 Se 9 crystals can be obtained. The one‐atom‐thick level Nb 2 Se 9 nanochains are successfully obtained by mechanical exfoliation and dispersion in a solvent. The covalently bonded Nb 2 Se 9 chain, when isolated from its three‐dimensional bulk material, is expected to have unique physical properties based on electron confinement in the 1D chain structure and the absence of dangling bonds. In addition, it has excellent thermal stability (up to 500 °C) and can be widely used in various fields.