Absolute quantum yield of O(1D2) in the photolysis of ozone in the hartley band

1979 ◽  
Vol 11 (6) ◽  
pp. 605-612 ◽  
Author(s):  
O. Kajimoto ◽  
R. J. Cvetanovi
Keyword(s):  
Quantum Yield ◽  
Absolute Quantum Yield ◽  
Hartley Band ◽  
Absolute Quantum

Manifestation of Сoncentration Quenching of Fluoroaluminate Glasses Doped with Erbium

2019 ◽  
Vol 822 ◽  
pp. 871-877
Author(s):  
Victor Klinkov ◽  
Aleksander Semencha ◽  
Evgenia Tsimerman ◽  
Artem Osipov ◽  
Margarita G. Dronova
Keyword(s):  
Quantum Yield ◽  
Decay Curve ◽  
Emission Spectra ◽  
Luminescence Spectra ◽  
Ion Energy ◽  
Maximum Value ◽  
Absolute Quantum Yield ◽  
Concentration Dependences ◽  
Yield Values ◽  
Absolute Quantum

Fluoroaluminate glasses of the composition 2Ва (РО3)2–98MgCaSrBaYAl2F14-xErF3, where x=0, 0.1, 0.5, 1.0 mol. % have been prepared by melt quenching technique and characterized by optical absorption, emission spectra and decay curve analysis. Measured transmission spectra indicate the high practical relevance of the composition of glasses under investigation for photonics and optoelectronics products. In the region of 500–700 nm, luminescence spectra with peaks at about 522, 550, and 665 nm were obtained. The positions of the luminescence bands have been described using an erbium ion energy scheme. The concentration dependences of the absolute quantum yield values for the series of Er3+-doped fluoroaluminate glasses were also established. The maximum value of absolute quantum yield was found for a sample with Er3+ concentration 0.21∙1020 сm-3. The main reason for reducing the values of absolute quantum yield is concentration quenching.

Absolute Quantum Yields for Exciplex Fluorescence

1990 ◽  
Vol 44 (1) ◽  
pp. 101-105 ◽  
Author(s):  
S. J. Hale ◽  
L. A. Melton
Keyword(s):  
Quantum Yield ◽  
Temperature Dependence ◽  
Room Temperature ◽  
Quantum Yields ◽  
Absolute Quantum Yield ◽  
The Absolute ◽  
Visualization Systems ◽  
Methyl Naphthalene ◽  
Absolute Quantum ◽  
Exciplex Fluorescence

The absolute quantum yields for exciplex fluorescence in four solutions which have potential as exciplex-based vapor/liquid visualization systems have been measured. The room-temperature absolute quantum yields for 10% dibutyl-aniline/0.4%, 1-cyanonaphthalene, 12.5% 1-methyl-naphthalene/0.5% N,N,N′,N′-tetramethyl- p-phenylenediamine (TMPD), 10% trihexylamine/1.0% 1-cyanonaphthalene, and 10% naphthalene/1.0% TMPD in hexadecane or cyclohexane are 0.03 ± 0.005, 0.05 ± 0.002 (308 nm), 0.02 ± 0.001, and 0.16 ± 0.021, respectively. The temperature dependence of the absolute quantum yield for the 10% naphthalene/1% TMPD in the hexadecane system was measured over the range of 23 to 260°C and was found to decrease by 20–30% at 260°C.

Absolute Quantum Yield Measurements of Near-Infrared Emission with Correction for Solvent Absorption

2019 ◽  
Vol 92 (1) ◽  
pp. 607-611 ◽  
Author(s):  
Ryosuke Hoshi ◽  
Kengo Suzuki ◽  
Naoya Hasebe ◽  
Toshitada Yoshihara ◽  
Seiji Tobita
Keyword(s):  
Quantum Yield ◽  
Near Infrared ◽  
Infrared Emission ◽  
Absolute Quantum Yield ◽  
Solvent Absorption ◽  
Near Infrared Emission ◽  
Absolute Quantum

scholarly journals Absolute quantum yield measurements of fluorescent proteins using a plasmonic nanocavity

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Daja Ruhlandt ◽  
Martin Andresen ◽  
Nickels Jensen ◽  
Ingo Gregor ◽  
Stefan Jakobs ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Fluorescent Proteins ◽  
Photophysical Properties ◽  
Dark State ◽  
Absolute Quantum Yield ◽  
Yield Values ◽  
Calibration Free ◽  
Protein Ensembles ◽  
Fluorescent Molecules ◽  
Absolute Quantum

AbstractOne of the key photophysical properties of fluorescent proteins that is most difficult to measure is the quantum yield. It describes how efficiently a fluorophore converts absorbed light into fluorescence. Its measurement using conventional methods become particularly problematic when it is unknown how many of the proposedly fluorescent molecules of a sample are indeed fluorescent (for example due to incomplete maturation, or the presence of photophysical dark states). Here, we use a plasmonic nanocavity-based method to measure absolute quantum yield values of commonly used fluorescent proteins. The method is calibration-free, does not require knowledge about maturation or potential dark states, and works on minute amounts of sample. The insensitivity of the nanocavity-based method to the presence of non-luminescent species allowed us to measure precisely the quantum yield of photo-switchable proteins in their on-state and to analyze the origin of the residual fluorescence of protein ensembles switched to the dark state.

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