Reaction of 5-40 eV ions with self-assembled monolayers

X Qin, T Tzvetkov, DC Jacobs

Index: Qin, Xiangdong; Tzvetkov, Tochko; Liu, Xin; Lee, Dong-Chan; Yu, Luping; Jacobs, Dennis C. Journal of the American Chemical Society, 2004 , vol. 126, # 41 p. 13232 - 13233

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Citation Number: 13

Abstract

The reaction of 5-40 eV O+ and Ne+ ions with alkanethiolate and semifluorinated alkanethiolate self-assembled monolayers (SAMs) is studied under ultrahigh vacuum (UHV) conditions. Whereas Ne+ simply sputters fragments from the surface, O+ can also abstract surface atoms and break CC bonds in both the hydrocarbon and fluorocarbon SAM chains. Isotopic labeling experiments reveal that O+ initially abstracts hydrogen atoms from the ...