Relative Quantum Yield Measurements of Coumarin Encapsulated in Core-Shell Silica Nanoparticles

The fluorescence quenching of 2-aminopurine and 2-phenylindole, acting a sensitizers, by 2- aminobenzophenon, acting as acceptor, in viscous solvents (Glycerol + 5% methanol) and its influence on the emission anisotropy (EA) of the sensitizer were investigated. It was found that the relation η/η0 - τ/τ0 (η/η0 the relative quantum yield and τ/τ0 the relative mean lifetime of the excited sensitizer) in this case is good fulfiled. The behaviour of the EA in the investigated acceptor concentration range is discussed.

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‘Excimer’ fluorescence I. Solution spectra of 1:2-benzanthracene derivatives

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1963.0150 ◽

1963 ◽

Vol 274 (1359) ◽

pp. 552-564 ◽

Cited By ~ 41

Keyword(s):

Quantum Yield ◽

Crystal Lattice ◽

Excited States ◽

Concentration Dependence ◽

Fluorescence Spectra ◽

Excimer Fluorescence ◽

Relative Quantum Yield ◽

Relative Quantum ◽

Different Types ◽

Excimer Formation

Observations have been made of the concentration dependence of the fluorescence spectra of solutions of 1:2-benzanthracene and fifteen of its hydrocarbon derivatives. All of the compounds, except the 9,10-dim ethyl derivative, exhibit dim er emission at higher concentrations. The lower excited states, 1 L b and 1 L a , satisfy Förster’s conditions for fluorescent dim er formation. The factors determining the relative quantum yield of excimer fluorescence are discussed. The different types of crystal fluorescence spectra shown by the compounds are explained in terms of excimer formation in the crystal lattice.

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Relative Quantum Yield for Photoemission from Thin Films of Xenon and Krypton

Physical Review Letters ◽

10.1103/physrevlett.17.919 ◽

1966 ◽

Vol 17 (17) ◽

pp. 919-921 ◽

Cited By ~ 24

Author(s):

J. F. O'Brien ◽

K. J. Teegarden

Keyword(s):

Thin Films ◽

Quantum Yield ◽

Relative Quantum Yield ◽

Relative Quantum

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Solvent Effect on the Relative Quantum Yield and Preferential Solvation of Biologically Active Coumarin Derivative

Macromolecular Symposia ◽

10.1002/masy.201800210 ◽

2019 ◽

Vol 387 (1) ◽

pp. 1800210

Author(s):

Varsha V. Koppal ◽

P. G. Patil ◽

Raveendra Melavanki ◽

Raviraj Kusanur ◽

N. R. Patil

Keyword(s):

Quantum Yield ◽

Solvent Effect ◽

Preferential Solvation ◽

Coumarin Derivative ◽

Biologically Active ◽

Relative Quantum Yield ◽

Relative Quantum

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Energieübertragung in Anthracen dotierten 2,3 Dimethyl- naphthalin-Einkristallen im Temperaturbereich 4K < T < 300 K / Energy Transfer in Anthracene Doped 2,3 Dimethylnaphthalene Single Crystals

Zeitschrift für Naturforschung A ◽

10.1515/zna-1975-1115 ◽

1975 ◽

Vol 30 (11) ◽

pp. 1462-1469 ◽

Cited By ~ 3

Author(s):

P. Ganz

Keyword(s):

Energy Transfer ◽

Quantum Yield ◽

Single Crystals ◽

Decay Time ◽

Fluorescence Spectra ◽

Theoretical Interpretation ◽

Impurity Molecule ◽

Relative Quantum Yield ◽

Light Pulses ◽

Relative Quantum

The fluorescence spectra and the decay time of emission bands of pure and anthracene doped 2,3 Dimethylnaphthalin single crystals excited by short light pulses were examined for temperatures of 4 to 300 K.On raising the temperature from 40 to 120 K the decay time and the relative quantum yield of 2,3 DN decreases, the emission is shifted by about 150 cm-1 to higher energies and simultanously the energy transfer to the anthracene impurity molecule increases.A model calculation is presented which allows a theoretical interpretation of the experimental results

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