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  • 한국과학기술정보연구원(KISTI) 서울분원 대회의실(별관 3층)
  • 2024년 07월 03일(수) 13:30
 

  • P-ISSN2233-4203
  • E-ISSN2093-8950
  • ESCI, SCOPUS, KCI

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  • P-ISSN 2233-4203
  • E-ISSN 2093-8950

Rapid Surface Heating Promotes Laser Desorption Ionization of Thermally Labile Molecules from Surfaces

Mass Spectrometry Letters / Mass Spectrometry Letters, (P)2233-4203; (E)2093-8950
2016, v.7 no.4, pp.91-95
https://doi.org/10.5478/MSL.2016.7.4.91
Sang Yun Han (Gachon University)
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Abstract

In recent years, matrix-free laser desorption ionization (LDI) for mass spectrometry of thermally labile molecules has been an important research subject in the pursuit of new ionization methods to serve as alternatives to the conventional matrixassisted laser desorption ionization (MALDI) method. While many recent studies have reported successful LDI of thermally labile molecules from various surfaces, mostly from surfaces with nanostructures, understanding of what drives the LDI process still requires further study. This article briefly reviews the thermal aspects involved in the LDI mechanism, which can be characterized as rapid surface heating. The thermal mechanism was supported by observed LDI and postsource decay (PSD) of peptide ions produced from flat surfaces with special thermal properties including amorphous Si (a-Si) and tungsten silicide (WSix). In addition, the concept of rapid surface heating further suggests a practical strategy for the preparation of LDI sample plates, which allows us to choose various surface materials including crystalline Si (c-Si) and Au tailorable to specific applications.

keywords
Laser desorption ionization (LDI), Rapid surface heating, Thermal mechanism, Matrix-assisted laser desorption ionization (MALDI), Surface-assisted laser desorption ionization (SALDI)


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투고일Submission Date
2016-12-03
수정일Revised Date
2016-12-16
게재확정일Accepted Date
2016-12-19
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