Selective Cleavage of the Nitro Group from a Nitrophenyl Monolayer by Synchrotron Soft X-ray†

作者: Joong Ho Moon , Ki-Jeong Kim , Tai-Hee Kang , Bongsoo Kim , Heon Kang

DOI: 10.1021/LA980349O

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摘要: A synchrotron radiation source was utilized for X-ray photoelectron spectroscopic analysis of a nitrobenzaldimine-formed monolayer. The N(1s) peak intensity the nitro group becomes reduced upon irradiation, while C(1s) and O(1s) peaks are invariant. This observation indicates that is cleaved selectively, leaving phenyl ring intact in layer. cleavage rate measured as function photon energy normalized with flux. first-order to concentration group. constant independent incident energy, suggesting not associated direct photoexcitation atomic core electrons. Electrons ejected by proposed most viable cause bond cleavage. molecules remaining on irradiated surface were analyzed gas chromatography−mass spectrometry coupled solid-phase microextraction method after hydrolyzing imine bond. It found amou...

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