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Gas phase electronic spectra of carbon chains Cn (n=6-9)

Chen, Xiaojing and Steglich, Mathias and Gupta, Varun and Rice, Corey A. and Maier, John P.. (2014) Gas phase electronic spectra of carbon chains Cn (n=6-9). Physical Chemistry, Chemical Physics, 16 (3). pp. 1161-1165.

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Official URL: http://edoc.unibas.ch/dok/A6205451

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Abstract

Ultraviolet electronic transitions of the linear carbon chains C6, C7, C8, and C9 were measured in the gas phase by a mass-resolved 1 + 1 resonant two-photon ionization technique using a picosecond laser. Broad absorptions with band maxima at 230.2 and 259.0 nm are identified as N3Σ−u − X3Σ−g (N < 3) transition of C6 and C8, respectively. Based on calculated Franck–Condon intensities, the band maxima are identified as origin bands. An upper limit of 30 ps is determined for the N3Σ−u excited state lifetime of C6. The 1Σ+u − X1Σ+g transition with band maximum at 238.5 nm was observed for C7 and at 279.0 nm for C9. The proposition that intramolecular processes in the excited electronic states of carbon chains can lead to broadening as in the diffuse interstellar absorptions is experimentally demonstrated.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Physikalische Chemie (Maier)
UniBasel Contributors:Maier, John Paul and Chen, Xiaojing and Steglich, Mathias and Gupta, Varun and Rice, Corey Allen
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Royal Society of Chemistry
ISSN:1463-9076
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:05 Dec 2016 12:27
Deposited On:31 Jan 2014 09:49

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