D
Dorian S. N. Parker
Researcher at University of Hawaii at Manoa
Publications - 51
Citations - 1486
Dorian S. N. Parker is an academic researcher from University of Hawaii at Manoa. The author has contributed to research in topics: Crossed molecular beam & Reaction dynamics. The author has an hindex of 20, co-authored 51 publications receiving 1280 citations. Previous affiliations of Dorian S. N. Parker include University of Hawaii & University College London.
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Journal ArticleDOI
Low temperature formation of naphthalene and its role in the synthesis of PAHs (Polycyclic Aromatic Hydrocarbons) in the interstellar medium
Dorian S. N. Parker,Fangtong Zhang,Y. S. Kim,Ralf I. Kaiser,Alexander Landera,Vadim V. Kislov,Alexander M. Mebel,Alexander G. G. M. Tielens +7 more
TL;DR: It is shown that naphthalene can be formed in the gas phase via a barrierless and exoergic reaction between the phenyl radical (C6H5) and vinylacetylene (CH2 = CH-C ≡ CH) involving a van-der-Waals complex and submerged barrier in the entrance channel.
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Hydrogen abstraction/acetylene addition revealed.
TL;DR: By probing the phenylacetylene intermediate together with naphthalene under combustion-like conditions by photo-ionization mass spectrometry, the very first direct experimental evidence for the validity of the HACA mechanism which so far had only been speculated theoretically is reported.
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Competing ultrafast intersystem crossing and internal conversion in the "channel 3" region of benzene
TL;DR: Time-resolved photoelectron spectroscopy measurements allow us to unravel the evolution of the S(1, T(1) and T(2) components of the excited state population and support the earlier proposal that ultrafast intersystem crossing competes with internal conversion.
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Reaction dynamics in astrochemistry: low-temperature pathways to polycyclic aromatic hydrocarbons in the interstellar medium.
TL;DR: Investigations suggest that in the hydrocarbon reactant, the vinyl-type group must be in conjugation with a -C≡CH or -HC=CH2 group to form a resonantly stabilized free radical intermediate, which eventually isomerizes to a cyclic intermediate followed by hydrogen loss and aromatization (PAH formation).
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Ultrafast dynamics of the S1 excited state of benzene
TL;DR: In this article, the authors investigated the ultrafast intramolecular dynamics of electronically and vibrationally excited benzene using time-resolved photoelectron spectroscopy and quantum dynamics simulations.