Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/13965
Title: Reactions of alcohols and thiols on the silicon (100) surface
Authors: DAI YUJING
Keywords: alcohols, thiols, Si (100), XPS, HREELS, UPS
Issue Date: 12-May-2004
Source: DAI YUJING (2004-05-12). Reactions of alcohols and thiols on the silicon (100) surface. ScholarBank@NUS Repository.
Abstract: We have investigated the simple alcohols, bifunctional alcohols and thiols adsorbed on Si (100)-2i?'1 using X-ray photoelectron spectroscopy (XPS), High-resolution electron energy loss spectroscopy (HREELS), Ultraviolet photoelectron spectroscopy (UPS) and DFT calculations. Methanol, ethanol, isopropanol and ethanethiol are dissociatively chemisorbed on the Si (100)-2x1. The theoretical results are consistent with our experimental results. In alkynol/Si and allyl mercaptan/Si systems, the experimental results strongly suggest the [2+2]-like cycloadduct through the C=C or Ca?!C with Si-dimers, consistent with the results of DFT calculations. The experimental results demonstrate that the attachment of alkenols involves mainly the [2+2]-like cycloadditions of the C=C group to the silicon dimers, forming a di-I? bonded intermediate. However, this is not consistent with our DFT calculations.
URI: http://scholarbank.nus.edu.sg/handle/10635/13965
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