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九州大学 先導研 外国人特別研究員 講演会
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講 師 ： 李忠均 先生（韓国忠南国立大学・教授）
日 時 ： 2014年2月13日(火)午後16:00～17:00
会 場 ： 筑紫キャンパス 先導研南棟112号室
講演題目 ： 「Organic Network of Trimesic acid on Au(111): Host-Guest Chemistry and Insertion of Metal Ion」
要 旨 ： Two dimensional organic network of trimesic acid (TMA) on Au(111) and its host-guest chemistry including formation of metal-organic coordination network (MOCN) is introduced. One of the carboxylates in TMA on Au(111) became de-protonated to carboxylate anion due to catalytic action of Au to form a crown-like primary hexamer, and the primary hexamers interconnect to each other to form a contoured network. There are two kinds of pores: one has six carboxylate anions (richer in negative charge) and the other has three anions (poorer in negative charge). Guest species (e.g. thiols and metal cations) were selectively hosted into the pores, depending on their charges. On the other hand, Zn2+ ions are inserted into the hydrogen bonds in the TMA network, not into the pores, to transform the organic network to a metal-organic coordination network. Based on the scanning tunneling microscopy observations, the chemistry of the TMA network on Au(111) will be explained.
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連絡先
Seong-Ho YOON
Professor
Institute for Materials Chemistry and Engineering, Kyushu University
6-1 Kasuga Koen, Kasuga, Fukuoka, Japan Zip: 816-8580
Tel: +81-92-583-7959 Fax: +81-92-583-7879