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Crucial Role of Anions on Arrangement of Cu 2 S Nanocrystal Superstructures
Author(s) -
Xiong Yansong,
Deng Ke,
Jia Yuying,
He Liangcan,
Chang Lin,
Zhi Linjie,
Tang Zhiyong
Publication year - 2014
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201303434
Subject(s) - nanocrystal , nanowire , ion , materials science , copper , thermal decomposition , nanoparticle , superlattice , chemical engineering , nanotechnology , decomposition , inorganic chemistry , crystallography , chemistry , organic chemistry , metallurgy , optoelectronics , engineering
Both of the arrays of Cu 2 S nanowires and the superlattices of Cu 2 S nanoparticles are obtained by the solventless thermolysis of copper thiolate in the presence of laurate. For the first time, the types of anions in the reaction system, which are generally neglected in previous studies, are found to determine the structure of the final assembly products. Furthermore, experimental results shows in the presence of Cl ‐ ions, Cl ‐ ions participate in the self‐assembly process and promote the formation of Cu 2 S nanowire arrays. Finally, the content of Cl‐ ions is gradually decreased with assembly reaction proceeding. Therefore, duiring the process, Cl ‐ ions play a role of ‘catassembly’ in the formation of Cu 2 S nanocrystal superstructures.