期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 141, 期 5, 页码 1838-1841出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.8b10942
关键词
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资金
- U.S. National Science Foundation [CHE-1665532]
- States of Jersey Postgraduate Bursary
- German Research Foundation (DFG) within the Collaborative Research Center (SFB) 1109
- DFG [SE 2253/3-1]
- Czech Ministry of Education
- EU [CZ.02.2.69/0.0/0.0/16_027/0008477]
- Czech Science Foundation [P208/12/G016]
- Czech Ministry of Education, Youth and Sports from the Large Infrastructures for Research, Experimental Development and Innovations project IT4Innovations National Supercomputing Center [LM2015070]
- [Primus16/SCI/27/247019]
Photoelectron spectroscopy of microjets expanded into vacuum allows access to orbital energies for solute or solvent molecules in the liquid phase. Microjets of water, acetonitrile and alcohols have previously been studied; however, it has been unclear whether jets of low temperature molecular solvents could be realized. Here we demonstrate a stable 20 mu m jet of liquid ammonia (-60 degrees C) in a vacuum, which we use to record both valence and core-level band photoelectron spectra using soft X-ray synchrotron radiation. Significant shifts from isolated ammonia in the gas-phase are observed, as is the liquid phase photoelectron angular anisotropy. Comparisons with spectra of ammonia in clusters and the solid phase, as well as spectra for water in various phases potentially reveal how hydrogen bonding is reflected in the condensed phase electronic structure.
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