119th General Meeting of the KCS

Type Poster Presentation
Area 물리화학
Room No. 포스터발표장
Time 4월 20일 (목요일) 11:00~12:30
Code PHYS.P-43
Subject Formation and Structure of Benzeneselenolate Self-Assembled Monolayers on Au(111) Derived from Benzeneselenocyanate and Diphenyl Diselenide
Authors 한슬기, 이남경, 노재근*
한양대학교 화학과, Korea
Abstract Self-assembled monolayers (SAMs) of organic thiol on gold substrate have been extensively studied due to their various potential applications such as nanolithography, nanoscience, molecular recognition, bioscience, and electronics. Nowadays, thiosulfates, thiochlorides, thiocyanates, and selenium group are regarded as a promising material in the preparation of SAMs due to their higher oxidation stability than organic thiols. Molecules containing a pi-conjugated system have been much researched due to their useful as a molecular junction. In this work, we compared the formation and structure of SAMs on Au(111) from benzeneselenocyanate (BeSeCN) and diphenyl diselenide (DPDSe) by ambient-pressure deposition. The adsorption of BeSeCN and DPDSe on Au(111) results in the formation of benzeneselenolate SAMs on Au(111) through the cleavage of Se-CN and Se-Se bond, respectively. Both SAMs were composed of many adatom islands, as found in aromatic thiol SAMs. Scanning tunneling microscopy imaging revealed that the ordered domains of DPDSe and BeSeCN SAMs have a (3√2 ×√43) and (√3 ×√5) packing structure, respectively.
E-mail fhsk0105f@hanmail.net