Surface-enhanced Raman scattering and surface-enhanced infrared absorption spectroscopic studies of a metalloporphyrin monolayer film formed on pyridine self-assembled monolayer-modified gold

被引：50

作者：

Zhang, ZJ

Imae, T ^{[1
]}

Sato, H

Watanabe, A

Ozaki, Y

机构：

[1] Nagoya Univ, Res Ctr Mat Sci, Chikusa Ku, Nagoya, Aichi 4648602, Japan

[2] Kwansei Gakuin Univ, Sch Sci, Dept Chem, Nishinomiya, Hyogo 6628501, Japan

来源：

LANGMUIR | 2001年 / 17卷 / 15期

关键词：

D O I：

10.1021/la001700k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A self-assembled monolayer film (SAM) of 2,3,7,8,12,13,17, 18-octaethylporphinatozinc formed on a gold surface premodified with a SAM of 4-pyridinethiol was studied by means of surface-enhanced Raman scattering (SERS), surface-enhanced infrared absorption (SEIRA), and ultraviolet-visible (UV-vis) spectroscopies. The SERS spectrum of the porphyrin monolayer on the pyridine-modified Au surface shows bands only from the underlying pyridine group. The frequency shift and change in the relative intensity of the bands due to the pyridine group in the SERS spectra imply indirectly the binding of the metalloporphyrin to the pyridine group in the SAM. This is further supported by the SEIRA spectra of the porphyrin-pyridine SAM, in which vibrational bands arising from both the porphyrin moiety and the pyridyl group appear clearly. In addition, the UV-vis spectra also suggest the formation of the porphyrin-pyridine SAM and the weak porphyrin-porphyrin interactions in the SARI.

引用

页码：4564 / 4568

页数：5

共 34 条

[1] Surface enhanced vibrational spectra of thymine [J].