Comprehensive look at the photochemistry of Tolane

• Verfasst von: Krämer, Maximilian [VerfasserIn]
• Verfasst von: Bunz, Uwe H. F. [VerfasserIn]
• Verfasst von: Dreuw, Andreas [VerfasserIn]
• Titel: Comprehensive look at the photochemistry of Tolane
• Verf.angabe: Maximilian Krämer, Uwe H.F. Bunz, and Andreas Dreuw
• Umfang: 8 S.
• Fussnoten: Gesehen am 29.11.201
• Titel Quelle: Enthalten in: The journal of physical chemistry <Washington, DC> / A
• Jahr Quelle: 2017
• Band/Heft Quelle: 121(2017), 5, S. 946-953
• ISSN Quelle: 1520-5215
• DOI: doi:10.1021/acs.jpca.6b09596
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565866460

Abstract

Diphenylacetylene (tolane) exhibits a rich photochemistry that depends on the relative orientation of the phenyl rings and the external conditions. Here, state-of-the-art quantum chemical methods based on the algebraic diagrammatic construction scheme for a polarization propagator of second order are employed to investigate the luminescence properties of tolane and its derivatives. It is explained why different derivatives of tolane exhibit different absorption but practically identical fluorescence spectra, why the fluorescence quantum yield and the population of a “dark” state are temperature-dependent, and why initially twisted tolanophanes phosphoresce in glassy media at 77 K while planar ones do not.