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Electronic Spectra of Protonated Fluoranthene in a Neon Matrix and Gas Phase at 10 K

Chakraborty, Arghya and Rice, Corey Allen and Hardy, François-Xavier and Fulara, Jan and Maier, John P.. (2016) Electronic Spectra of Protonated Fluoranthene in a Neon Matrix and Gas Phase at 10 K. Journal of Physical Chemistry A, 120 (27). pp. 4805-4811.

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Abstract

Four electronic systems with origin bands at 759.5, 559.3, 476.3, and 385.5 nm are detected in a 6 K neon matrix following deposition of mass-selected protonated fluoranthene C16H11+ produced from a reaction of neutral vapor and ethanol in a hot-cathode ion source. Two cationic isomers are identified as the carriers of these band systems. The 559.3, 476.3, and 385.5 nm absorptions are assigned to 4,3,2 1A′ ← X 1A′ transitions of isomer E+ (γ−) and the 2 1A′ ← X 1A′ system at 759.5 nm is of isomer C+ (α−) of protonated fluoranthene on the basis of theoretical predictions. The electronic spectrum of E+ was also recorded in the gas phase using a resonant 1 + 1 two-photon excitation–dissociation technique in an ion trap at vibrational and rotational temperatures of 10 K. The 3,2 1A′ ← X 1A′ transitions have origin band maxima at 558.28 ± 0.01 and 474.92 ± 0.01 nm. Both the 2 1A′ and 3 1A′ excited states have a distinct vibrational pattern with lifetimes on the order of 1 ps.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Physikalische Chemie (Maier)
UniBasel Contributors:Maier, John Paul and Chakraborty, Arghya and Rice, Corey Allen and Hardy, François-Xavier and Fulara, Jan
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Chemical Society
ISSN:1089-5639
e-ISSN:1520-5215
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:19 Jan 2018 14:32
Deposited On:05 Jan 2018 13:13

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