Laser Desorption Time-of-Flight Mass Spectrometry of Inorganic Nanoclusters: An Experiment for Physical Chemistry or Advanced Instrumentation Laboratories

• Autores: Timothy M. Ayers, Scott T. Akin, Collin J. Dibble, Michael A. Duncan
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 91, Nº 2, 2014, págs. 291-296
• Idioma: inglés
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• Resumen

  • New experiments for the undergraduate laboratory are described using laser desorption time-of-fight (TOF) mass spectrometry to produce and analyze a variety of inorganic nanoclusters. Laser vaporization of solid powder samples of sulfur, phosphorus, and bismuth all produce gas-phase cluster ions with unusual mass spectral patterns. This experiment provides an introduction to TOF mass spectrometry and ultrasmall nanoclusters, as well as hands-on experience in vacuum systems, lasers, oscilloscopes, and pulsed electronics. New concepts in chemical bonding for inorganic materials are explored.