Please use this identifier to cite or link to this item:
Title: Formation of a tetra-σ-bonded intermediate in acetylethyne binding on Si(100)-2 × 1
Authors: Huang, H.G.
Cai, Y.H.
Huang, J.Y.
Tang, H.H.
Xu, G.Q. 
Issue Date: 12-Apr-2005
Citation: Huang, H.G., Cai, Y.H., Huang, J.Y., Tang, H.H., Xu, G.Q. (2005-04-12). Formation of a tetra-σ-bonded intermediate in acetylethyne binding on Si(100)-2 × 1. Langmuir 21 (8) : 3384-3388. ScholarBank@NUS Repository.
Abstract: The covalent binding of acetylethyne on Si(100)-2 × 1 has been investigated using high-resolution electron energy loss spectroscopy (HREELS) and X-ray photoelectron spectroscopy (XPS). The HREELS spectra of chemisorbed monolayers show the absence of the C=O, C=C, and C(sp)-H stretching modes coupled with the appearance of C=C (at 1580 cm -1) and C(sp 2)-H (at 3067 cm -1) stretching modes. This demonstrates that both of the C=O and C≡C groups of acetylethyne directly participate in binding with silicon surfaces to form C-O and C=C bonds, respectively, which is further confirmed by the XPS studies. A tetra-σ-binding configuration through two [2 + 2]-like cycloaddition reactions in acetylethyne binding on Si(100) is proposed to account for the experimental observation. The cycloadduct containing a C=C double bond may be employed as an intermediate for further in situ chemical syntheses of multilayer organic thin films or surface functionalization. © 2005 American Chemical Society.
Source Title: Langmuir
ISSN: 07437463
DOI: 10.1021/la047107a
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Jul 15, 2020


checked on Jul 15, 2020

Page view(s)

checked on Jul 12, 2020

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.