期刊
ANALYTICAL CHEMISTRY
卷 87, 期 16, 页码 8057-8062出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.analchem.5b02390
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资金
- National Natural Science Foundation of China [21205023]
- MOST, China [2012BAF14B03]
- National Institutes of Health [1R41GM113337-01]
- Robert M. Bass and Anne T. Bass Stanford Graduate Fellowship
- National Science Foundation
- Center for Molecular Analysis and Design
- University of Utah [10029173-S2]
- Air Force Office of Scientific Research [9550-12-1-04]
Ambient ionization mass spectrometry is achieved in a simple manner by loading a sample solution onto a corner of a microscope cover glass positioned in front of the inlet to a mass spectrometer and applying a high voltage to the sample. The resulting stream of charged droplets is stable, has no contamination from the substrate platform, and can be used repeatedly. The utility of droplet spray for in situ analysis and real-time monitoring of chemical reactions was demonstrated by the bis(cyclopentadienyl)zirconium dichloride (zirconocene dichloride) /methylaluminoxane, Cp2ZrCl2/MAO, homogeneously catalyzed polymerization of ethylene in various solutions. Reaction times ranged from seconds to minutes, and catalytically active species and polymeric products of ethylene were acquired and identified by tandem mass spectrometry.
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