Experimental observation of guanine tautomers with VUV photoionization
Journal Article
·
· Journal of Physical Chemistry A
OSTI ID:945363
Two methods of preparing guanine in the gas phase, thermal vaporization and laser desorption, have been investigated. The guanine generated by each method is entrained in a molecular beam, single photon ionized with tunable VUV synchrotron radiation, and analyzed using reflectron mass spectrometry. The recorded photoionization efficiency (PIE) curves show a dramatic difference for experiments performed via thermal vaporization compared to laser desorption. The calculated vertical and adiabatic ionization energies for the eight lowest lying tautomers of guanine suggest the experimental observations arise from different tautomers being populated in the two different experimental methods.
- Research Organization:
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
- Sponsoring Organization:
- Chemical Sciences Division
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 945363
- Report Number(s):
- LBNL-1330E
- Journal Information:
- Journal of Physical Chemistry A, Journal Name: Journal of Physical Chemistry A
- Country of Publication:
- United States
- Language:
- English
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