期刊
E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY
卷 7, 期 -, 页码 93-96出版社
SURFACE SCI SOC JAPAN
DOI: 10.1380/ejssnt.2009.93
关键词
Gold nanoparticles; Laser desorption/ionization; Surface plasmon; Surface-enhanced Raman scattering; Charge transfer effect
We researched contribution of a charge transfer (CT) effect to desorption/ionization mechanism in our ultra-high sensitive laser desorption/ionization mass spectrometry based on surface plasmon (SP) excitation (SPLDI-MS). A quantity of CT electrons between a metal surface and sample molecules estimated from Raman measurement is correlated to a mass signal intensity of sample molecule in our SPLDI-MS method. A sample system with a larger quantity of CT electrons gave a higher mass signal intensity. Efficient use of the CT effect would lead to development of a higher sensitive SPLDI-MS and this development would contribute to advancement of various fields.
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