december 22, 2024

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2011, № 4

Ryuichi Kikkawa, Yoshiya Inokuchi, Takayuki Ebata, Hiroyuki Saigusa MASS SPECTROMETRY FOR NONVOLATILE FUNCTIONAL MOLECULES BY LASER DESORPTION/VACUUM-ULTRAVIOLET PHOTOIONIZATION METHODLaser desorption (LD)/vacuum ultraviolet (VUV) photoionization (PI) mass spectrometry (LD/VUVPI MS) is presented for nonvolatile bio-related aromatic molecules (tyramine, L-phenylalanine and L-tyrosine) and functional molecules (dibenzo-18-crwon-6-ether, calix[4]arene, calix[8]arene and calix[4]resorcinarene). A pellet of the sample mixed with graphite matrix was irradiated by IR laser for the desorption and the vaporized sample was ionized by a vacuum ultraviolet light at 10.5 eV, which was obtained by the high harmonic generation of Nd:YAG laser light. The ionized sample was mass analyzed by a time-of-flight mass spectrometer. LD/VUVPI mass spectrometry has been successfully carried out for the molecules examined. It was found that the bio-related aromatic molecules exhibit considerable fragmentation by the ionization at 10.5 eV, while those of the functional molecules show strong peak at the parent mass with less fragmentation.

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About this article

Authors: Nirouiki Saigisa, Ruiishi Kikkawa, Takauiki Ebata, Yoshiua Inokishi

Year: 2011

Editor-in-chief

Sergey Aleksandrovich
MIROSHNIKOV

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