Multiphoton ionization and ab initio calculation studies of the hydrogen-bonded clusters C4H5N-(H20)n
Article Abstract:
A time-of-flight mass spectrometer and ab initio calculation were used to investigate the multiphoton ionization of the hydrogen-bonded clusters C4H5N-(H20)n at 355 and 532 nm wavelengths. Results showed that a series of C4H5N-(H20)n+ and C4H5N-(H20)nH+ can be obtained at both wavelengths. The proton in the protonated products obtained at 355 nm was found to preferably link with the alpha-C of pyrrole than with the N atom. Moreover, the protonated products obtained from 532 nm seem to be influenced by an intracluster penning ionization or a charge transfer reaction.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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Control of the photophysical properties of polyatomic molecules by substitution and solvation: the second excited singlet state of azulene
Article Abstract:
The dynamics of the second excited singlet (S2) state of 1-fluoroazulene, 1,3-difluoroazulene and their simple derivatives were characterized by measuring the S2 -> S0 fluorescence quantum yields and S2 lifetimes of several series of structurally related compounds in six solvents. Results showed that the substitution by alkyl groups increase the nonradiative decay rates. Moreover, the S2 decay rates increases through the substitution by bromine or chlorine.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
User Contributions:
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