Physical properties of aliphatic monolayer on indium-tin oxide and SnO 2(110) relevant to thermal stability of soft-landed Cr(benzene) 2

Shuhei Nagaoka, Kazuki Horiuchi, Masaya Shikishima, Atsushi Nakajima

研究成果: Article査読

3 被引用数 (Scopus)

抄録

The physical properties of surface modified indium-tin oxide (ITO) and SnO 2(110) with an adsorbed aliphatic chain monolayer were studied by soft-landing experiments coupled with infrared (IR) spectroscopy, temperature programmed desorption (TPD) spectroscopy, and scanning probe microscopy. The IR spectra showed that the aliphatic chains of palmitic acid on both the metal oxide surfaces form a crystalline-phase monolayer with an all-trans conformation at room temperature. Gas-phase synthesized Cr(benzene) 2 cations deposited with a hyperthermal energy (20 eV) were used to probe the surface morphology. The IR spectrum after deposition showed that the cations soft-landed after being neutralized and oriented to cant the molecular axes far from the surface normal direction through penetration into the monolayer matrix. The TPD spectrum showed that the desorption activation energy of Cr(benzene) 2 from an aliphatic monolayer on ITO is much lower than that from the aliphatic monolayer on SnO 2 or a self-assembled monolayer of alkanethiol on Au(111). The lower thermal stability of Cr(benzene) 2 on the aliphatic monolayer on ITO can be ascribed to considerable surface roughness of the ITO itself, which can be characterized by scanning probe microscopy.

本文言語English
ページ(範囲)24215-24220
ページ数6
ジャーナルJournal of Physical Chemistry C
115
49
DOI
出版ステータスPublished - 2011 12 15

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • エネルギー(全般)
  • 物理化学および理論化学
  • 表面、皮膜および薄膜

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「Physical properties of aliphatic monolayer on indium-tin oxide and SnO <sub>2</sub>(110) relevant to thermal stability of soft-landed Cr(benzene) <sub>2</sub>」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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