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Status: Bibliographieeintrag

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Verfasst von:Haberhauer, Gebhard [VerfasserIn]   i
 Gleiter, Rolf [VerfasserIn]   i
 Burkhart, Christoph [VerfasserIn]   i
Titel:Planarized intramolecular charge transfer
Titelzusatz:a concept for fluorophores with both large stokes shifts and high fluorescence quantum yields
Verf.angabe:Gebhard Haberhauer, Rolf Gleiter, and Christoph Burkhart
E-Jahr:2016
Jahr:08 January 2016
Umfang:8 S.
Fussnoten:Gesehen am 02.09.2020
Titel Quelle:Enthalten in: Chemistry - a European journal
Ort Quelle:Weinheim : Wiley-VCH, 1995
Jahr Quelle:2016
Band/Heft Quelle:22(2016), 3, Seite 971-978
ISSN Quelle:1521-3765
Abstract:Abstract Fluorophores were successfully used in several areas of chemistry and biochemistry. For many purposes, however, it is necessary that the fluorescence compound features a high fluorescence quantum yield as well as a large Stokes shift. The latter is, for example, achieved by the use of a twisted intramolecular charge-transfer (TICT) compound, which shows a twisted geometry in the excited state. However, the higher the twisting is, the lower becomes in general the fluorescence quantum yield as the resulting emission from the twisted state is forbidden. In order to escape this dilemma, we propose the model of planarized intramolecular charge-transfer (PLICT) states. These compounds are completely twisted in the ground states and planar in the excited states. By means of quantum chemical calculations (time-dependent (TD)-B3LYP and CC2) and experimental studies, we could demonstrate that 1-aminoindole and its derivatives form photoinduced PLICT states. They show both very large Stokes shifts ( =9000?13?500?cm?1, i.e., ?=100?150?nm) and high fluorescence quantum yields. These characteristics and their easy availability starting from the corresponding indoles, make them very attractive for the use as optical switches in various fields of chemistry as well as biological probes.
DOI:doi:10.1002/chem.201503927
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext ; Verlag: https://doi.org/10.1002/chem.201503927
 Volltext: https://chemistry-europe.onlinelibrary.wiley.com/doi/full/10.1002/chem.201503927
 DOI: https://doi.org/10.1002/chem.201503927
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:ab initio calculations
 absorption
 density functional calculations
 fluorescence
 heterocycles
 nitrogen
K10plus-PPN:1728588790
Verknüpfungen:→ Zeitschrift

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