SELECTIVE CLEAVAGE OF FUNCTIONAL GROUPS IN THE FUNCTIONALIZED ORGANIC MONOLAYERS BY SYNCHROTRON SOFT X-RAYS

Tai-Hee Kang, Ki-Jeong Kim, Chan-Cuk Hwang, Kyu-Wook Ihm, Hyun-Joon Shin, Min-Kyu Lee, Bongsoo Kim, Chong-Yun Park, Young-Hye La, Joong Ho Moon, Hyun Ju Kim and Joon Won Park
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Tai-Hee Kang: Beamline Research Division, Pohang Accelerator Laboratory, Pohang Institute of Science and Technology, Pohang, 790-784, Korea;
Ki-Jeong Kim: Beamline Research Division, Pohang Accelerator Laboratory, Pohang Institute of Science and Technology, Pohang, 790-784, Korea
Chan-Cuk Hwang: Beamline Research Division, Pohang Accelerator Laboratory, Pohang Institute of Science and Technology, Pohang, 790-784, Korea
Kyu-Wook Ihm: Beamline Research Division, Pohang Accelerator Laboratory, Pohang Institute of Science and Technology, Pohang, 790-784, Korea
Hyun-Joon Shin: Beamline Research Division, Pohang Accelerator Laboratory, Pohang Institute of Science and Technology, Pohang, 790-784, Korea;
Min-Kyu Lee: Beamline Research Division, Pohang Accelerator Laboratory, Pohang Institute of Science and Technology, Pohang, 790-784, Korea
Bongsoo Kim: Beamline Research Division, Pohang Accelerator Laboratory, Pohang Institute of Science and Technology, Pohang, 790-784, Korea;
Chong-Yun Park: Department of Physics and BK21, Sung Kyun Kwan University, Suwon, 440-746, Korea
Young-Hye La: Center for Integrated Molecular Systems, Department of Chemistry, Division of Molecular and Life Sciences, Pohang Institute of Science and Technology, 790-784, Korea
Joong Ho Moon: Center for Integrated Molecular Systems, Department of Chemistry, Division of Molecular and Life Sciences, Pohang Institute of Science and Technology, 790-784, Korea
Hyun Ju Kim: Center for Integrated Molecular Systems, Department of Chemistry, Division of Molecular and Life Sciences, Pohang Institute of Science and Technology, 790-784, Korea
Joon Won Park: Center for Integrated Molecular Systems, Department of Chemistry, Division of Molecular and Life Sciences, Pohang Institute of Science and Technology, 790-784, Korea

Surface Review and Letters (SRL), 2002, vol. 09, issue 01, 305-311

Abstract: Aminosilylated surface was treated with halide-substituted aromatic aldehydes, and the resulting molecular layers were examined with synchrotron X-ray photoelectron spectroscopy at the 2B1 SGM and 4B1 microscopy beamline in the Pohang Accelerator Laboratory. It was observed that the halide group of the film diminished upon the irradiation, but the other bands were constant in terms of the intensity and the shape. This observation indicates that the functional groups of the organic monolayers are cleaved selectively by soft X-rays. The cleavage rate was measured as a function of photon energy and normalized with photon flux. The cleavage is first-order to the concentration of the functional group. Its rate constant is sensitive to the molecular structure of the organic monolayers and the kind of substituents on the aromatic ring.

Keywords: 33.60Cv; 33.60Fy (search for similar items in EconPapers)
Date: 2002
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DOI: 10.1142/S0218625X02002233

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