کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9575144 | 1504340 | 2005 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Molecular assemblies and redox reactions of zinc(II) tetraphenylporphyrin and zinc(II) phthalocyanine on Au(1Â 1Â 1) single crystal surface at electrochemical interface
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Adlayers of zinc(II) 5,10,15,20-tetraphenyl-21H,23H-porphine (ZnTPP) and zinc(II) phthalocyanine (ZnPc) were formed on Au(1Â 1Â 1) substrate by immersion in benzene solutions containing these molecules, and they were investigated in 0.1Â M HClO4 by using cyclic voltammetry and in situ scanning tunneling microscopy. Highly ordered epitaxial layers of ZnTPP and ZnPc molecules were obtained by controlling the immersion time. In particular, the epitaxial growth of ZnPc was found to be strongly influenced by the underlying ZnPc adlayer structure. Ordered monolayers of ZnTPP and ZnPc molecules were observed on reconstructed Au(1Â 1Â 1) surfaces. At negative electrode potentials, an individual ZnTPP molecule was composed of a set of bright spots in the highly ordered ZnTPP adlayer, showing that a redox reaction proceeded in the framework of TPP. The highly ordered ZnPc adlayers also revealed a structural change induced by the redox reaction in the framework of Pc at negative potentials. Electrochemical potential played a significant role in the redox reactions of ZnTPP or ZnPc molecules on the Au(1Â 1Â 1) surface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 319, Issues 1â3, 7 December 2005, Pages 147-158
Journal: Chemical Physics - Volume 319, Issues 1â3, 7 December 2005, Pages 147-158
نویسندگان
Soichiro Yoshimoto, Eishi Tsutsumi, Koji Suto, Yosuke Honda, Kingo Itaya,