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Vibrational and electronic spectra of matrix-isolated pentacene cations and anions

โœ Scribed by Jan Szczepanski; Christine Wehlburg; Martin Vala

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
557 KB
Volume
232
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

Pentacene cations and anions have been formed by electron bombardment of a vapor phase mixture of pentacene, Ar and CC14 and trapped in an argon matrix. The electronic and infrared spectra of both ions have been recorded. Increasing concentrations of CC14 resulted in the eventual disappearance of the anion spectrum. The intensity distributions of the IR spectra of the ions are similar but differ markedly from the distribution of neutral pentacene. The ion intensities resemble the distribution of the so-called interstellar 'unidentified infrared' bands. The visible bands of neutral, cationic and anionic pentacene are compared with the diffuse interstellar bands.

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