オノダ　ジョウ   小野田　穣    所属   福岡教育大学  教育学部 理科教育研究ユニット    職種   講師
言語種別	英語
発行・発表の年月	2017/04
形態種別	研究論文
査読	査読あり
標題	Electronegativity determination of individual surface atoms by atomic force microscopy
執筆形態	共著
掲載誌名	Nature Communications
掲載区分	国外
出版社・発行元	Nature Publishing Group
巻・号・頁	8,pp.15155
総ページ数	6
担当区分	筆頭著者,責任著者
国際共著	国際共著
著者・共著者	Jo Onoda, Martin Ondráček, Pavel Jelínek, Yoshiaki Sugimoto
概要	Electronegativity is a fundamental concept in chemistry. Despite its importance, the experimental determination has been limited only to ensemble-averaged techniques. Here, we report a methodology to evaluate the electronegativity of individual surface atoms by atomic force microscopy. By measuring bond energies on the surface atoms using different tips, we find characteristic linear relations between the bond energies of different chemical species. We show that the linear relation can be rationalized by Pauling’s equation for polar covalent bonds. This opens the possibility to characterize the electronegativity of individual surface atoms. Moreover, we demonstrate that the method is sensitive to variation of the electronegativity of given atomic species on a surface due to different chemical environments. Our findings open up ways of analysing surface chemical reactivity at the atomic scale.
DOI	10.1038/ncomms15155