Intrinsic fluorescence properties of rhodamine cations in gas-phase: triplet lifetimes and dispersed fluorescence spectra

2013 ◽  
Vol 15 (21) ◽  
pp. 8162 ◽  
Author(s):  
Jean-François Greisch ◽  
Michael E. Harding ◽  
Mattias Kordel ◽  
Wim Klopper ◽  
Manfred M. Kappes ◽  
...  
Keyword(s):  
Gas Phase ◽  
Fluorescence Spectra ◽  
Intrinsic Fluorescence ◽  
Fluorescence Properties ◽  
Dispersed Fluorescence

Fluorescence of BODIPY Dyes in Gas Phase at near Ambient Conditions

2020 ◽  
Author(s):  
Kseniya A. Mariewskaya ◽  
Denis Larkin ◽  
Yuri Samoilichenko ◽  
Vladimir Korshun ◽  
Alex Ustinov
Keyword(s):  
Gas Phase ◽  
Molecular Interactions ◽  
Atmospheric Pressure ◽  
Fluorescence Spectra ◽  
Visible Range ◽  
Intrinsic Properties ◽  
Ambient Conditions ◽  
Ideal Model ◽  
Molecular Fluorescence ◽  
Tesla Coil

Molecular fluorescence is a phenomenon that is usually observed in condensed phase. It is strongly affected by molecular interactions. The study of fluorescence spectra in the gas phase can provide a nearly-ideal model for the evaluation of intrinsic properties of the fluorophores. Unfortunately, most conventional fluorophores are not volatile enough to allow study of their fluorescence in the gas phase. Here we report very bright gas phase fluorescence of simple BODIPY dyes that can be readily observed at atmospheric pressure using conventional fluorescence instrumentation. To our knowledge, this is the first example of visible range gas phase fluorescence at near ambient conditions. Evaporation of the dye in vacuum allowed us to demonstrate organic molecular electroluminescence in gas discharge excited by electric field produced by a Tesla coil.

Excitation and dispersed fluorescence spectra of the 1B2(V)-1Σg+(X̄) transition of jet-cooled CS2

1984 ◽  
Vol 86 (1-2) ◽  
pp. 173-188 ◽  
Author(s):  
Hiroshi Kasahara ◽  
Naohiko Mikami ◽  
Mitsuo Ito ◽  
Suehiro Iwata ◽  
Isao Suzuki
Keyword(s):  
Fluorescence Spectra ◽  
Dispersed Fluorescence

The Acetylene S0Surface: From Dispersed Fluorescence Spectra to Polyads to Dynamics

1995 ◽  
Vol 99 (3) ◽  
pp. 555-560 ◽  
Author(s):  
Stephani Ann B. Solina ◽  
Jonathan P. O'Brien ◽  
Robert W. Field ◽  
William F. Polik
Keyword(s):  
Fluorescence Spectra ◽  
Dispersed Fluorescence

scholarly journals Electronic Spectra of 1-Phenylethylamine and its Derivatives in Supersonic Jets

1990 ◽  
Vol 10 (3) ◽  
pp. 169-175
Author(s):  
Seiji Yamamoto ◽  
Taeko Niwa ◽  
Mitsuo Ito
Keyword(s):  
Relaxation Process ◽  
Electronic Spectra ◽  
Fluorescence Spectra ◽  
Phenyl Group ◽  
Nonradiative Relaxation ◽  
Excitation Spectra ◽  
Fluorescence Excitation ◽  
Fluorescence Excitation Spectra ◽  
Dispersed Fluorescence ◽  
Asymmetric Carbon

The S1←S0 fluorescence excitation spectra and dispersed fluorescence spectra of jet-cooled (+)-, (-)- and (±)-1-phenylethylamine and their derivatives (amides) have been observed. The 0-0 band of the amine locates at 37,641 cm-1. The amides which were synthesized from (+)-amine or (-)-amine with (+)-tartaric acid are diastereomers. It was found that the two diastereomers give the identical spectra with the 0-0 band at 34,757 cm-1. No difference in the spectrum indicates that the excitation is localized in the phenyl group which is far from the asymmetric carbon causing diastereoism. It was also found that 1-phenylethylamine has a fast nonradiative relaxation process in the Sstate, but such a process is removed by the formation of the amide.

scholarly journals Tissue Intrinsic Fluorescence Spectra-Based Digital Pathology of Liver Fibrosis by Marker-Controlled Segmentation

2018 ◽  
Vol 5 ◽  
Author(s):  
Takashi Saitou ◽  
Sota Takanezawa ◽  
Hiroko Ninomiya ◽  
Takao Watanabe ◽  
Shin Yamamoto ◽  
...  
Keyword(s):  
Liver Fibrosis ◽  
Fluorescence Spectra ◽  
Digital Pathology ◽  
Intrinsic Fluorescence
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