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Formation of Nickel Clusters Wrapped in Carbon Cages: Toward New Endohedral Metallofullerene Synthesis

TitleFormation of Nickel Clusters Wrapped in Carbon Cages: Toward New Endohedral Metallofullerene Synthesis
Publication TypeJournal Article
Year of Publication2017
AuthorsSinitsa, A. S., Chamberlain T. W., Zoberbier T., Lebedeva I. V., Popov A. M., Knizhnik A. A., McSweeney R. L., Biskupek J., Kaiser U., & Khlobystov A. N.
Keywordscarbon nanotube; electron irradiation; Endohedral metallofullerenes; molecular dynamics; transmission electron microscopy
Abstract

Despite the high potential of endohedral metallofullerenes (EMFs) for application in biology, medicine and molecular electronics, and recent efforts in EMF synthesis, the variety of EMFs accessible by conventional synthetic methods remains limited and does not include, for example, EMFs of late transition metals. We propose a method in which EMF formation is initiated by electron irradiation in aberration-corrected high-resolution transmission electron spectroscopy (AC-HRTEM) of a metal cluster surrounded by amorphous carbon inside a carbon nanotube serving as a nanoreactor and apply this method for synthesis of nickel EMFs. The use of AC-HRTEM makes it possible not only to synthesize new, previously unattainable nanoobjects but also to study in situ the mechanism of structural transformations. Molecular dynamics simulations using the state-of-the-art approach for modeling the effect of electron irradiation are performed to rationalize the experimental observations and to link the observed processes with conditions of bulk EMF synthesis.

JournalNANO LETTERS
Volume17
Pagination1082-1089
DOI10.1021/acs.nanolett.6b04607
Date PublishedFEB
Type of ArticleArticle
Citation Key ISI:000393848800067