Binding mechanisms of methacrylic acid and methyl methacrylate on si(111)-7 x 7 -- effect of substitution groups.
The interaction of methacrylic acid and methyl methacrylate with Si(111)-7 x 7 has been investigated using high-resolution electron energy loss spectroscopy (HREELS) and X-ray photoelectron spectroscopy (XPS). While methacrylic acid chemisorbs dissociatively through O-H bond cleavage, methyl methacrylate is covalently attached to the silicon surface via a [4+2] cycloaddition. The different reaction pathways of these two compounds on Si(111)-7 x 7 demonstrate that the substitution groups play an important role in determining the reaction channels for multifunctional molecules, leading to the desired flexibility in the organic modification of silicon surfaces.
Huang
Jing Yan
JY
Department of Chemistry, National University of Singapore, 10 Kent Ridge, Singapore 119260, Singapore.
Shao
Yan Xia
YX
Huang
Hai Gou
HG
Cai
Ying Hui
YH
Ning
Yue Sheng
YS
Tang
Hai Hua
HH
Liu
Qi Ping
QP
Alshahateet
Solhe F
SF
Sun
Yue Ming
YM
Xu
Guo Qin
GQ
D001895:Boron / Q000737:chemistry; D003500:Cyclization; D007202:Indicators and Reagents; D008689:Methacrylates / Q000737:chemistry*; D020366:Methylmethacrylate / Q000737:chemistry; D012828:Silicones / Q000737:chemistry*; D013052:Spectrometry, X-Ray Emission; D046590:Spectroscopy, Electron Energy-Loss; D013499:Surface Properties
D007202:Indicators and Reagents; D008689:Methacrylates; D012828:Silicones; D020366:Methylmethacrylate; C008384:methacrylic acid; D001895:Boron