کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
190451 | 459699 | 2010 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Self-assembly of 2,6-naphthalenedicarboxylic acid and 4,4′-biphenyldicarboxylic acid on highly oriented pyrolytic graphite and Au(1 1 1) surfaces Self-assembly of 2,6-naphthalenedicarboxylic acid and 4,4′-biphenyldicarboxylic acid on highly oriented pyrolytic graphite and Au(1 1 1) surfaces](/preview/png/190451.png)
Self-assemblies of 2,6-naphthalenedicarboxylic acid (NDC) and 4,4′-biphenyldicarboxylic acid (BDC) molecules on the highly oriented pyrolytic graphite (HOPG) and reconstructed Au(1 1 1) surfaces has been, respectively, studied by using scanning tunneling microscopy (STM). The NDC molecules form an incommensurate structure, while BDC molecules form a commensurate structure on the HOPG surface. The aromatic rings take the same orientation with that of the underlying HOPG substrate to gain optimum adsorbate–substrate interactions. On the Au(1 1 1) surface, both molecules form incommensurate structures. The orientations of aromatic ring locate about 20° with respect to the gold rows, the 〈1 1 0〉 direction. On the HOPG surface, the whole carboxyl groups are invisible, while the carbon atoms of the carboxyl groups may appear bright on the gold surface.
Journal: Electrochimica Acta - Volume 55, Issue 27, 30 November 2010, Pages 8287–8292