Spectra and quantum yield of phosphorescence of rhodamine 6G solutions at 77�K

1974 ◽  
Vol 20 (5) ◽  
pp. 604-607 ◽  
Author(s):  
V. A. Kuznetsov ◽  
N. I. Kunavin ◽  
V. N. Shamraev
Keyword(s):  
Quantum Yield ◽  
Rhodamine 6G

Formation of Intensive Photoluminescence in Porous Silicon

1995 ◽  
Vol 405 ◽  
Author(s):  
V. A. Makara ◽  
M. S. Boltovets ◽  
O. V. Vakulenko ◽  
O. I. Datsenko ◽  
O. V. Rudenko
Keyword(s):  
Porous Silicon ◽  
Quantum Yield ◽  
Rhodamine 6G ◽  
Mechanical Stresses ◽  
Pl Spectra ◽  
Pl Intensity

AbstractPhotoluminescence (PL) spectra of porous silicon (PS) samples are studied. Effect of mechanical stresses in substrate on PL intensity is shown. The quantum yield (QY) of PS luminescence is estimated by comparing PL spectra of PS and rhodamine 6G.

Effect of soap on the fluorescent lifetime and quantum yield of rhodamine 6G in water

1973 ◽  
Vol 7 (3) ◽  
pp. 191-192 ◽  
Author(s):  
R.R. Alfano ◽  
S.L. Shapiro ◽  
W. Yu
Keyword(s):  
Quantum Yield ◽  
Rhodamine 6G

Preparation and Characterization of Rhodamine 6G/Alkyltrimethylammonium/Laponite Hybrid Solid Materials with Higher Emission Quantum Yield

2008 ◽  
Vol 113 (1) ◽  
pp. 415-421 ◽  
Author(s):  
Ryo Sasai ◽  
Takanori Itoh ◽  
Wataru Ohmori ◽  
Hideaki Itoh ◽  
Michiko Kusunoki
Keyword(s):  
Quantum Yield ◽  
Rhodamine 6G ◽  
Solid Materials ◽  
Emission Quantum Yield

SOLVENT EFFECT ON ABSOLUTE FLUORESCENCE QUANTUM YIELD OF RHODAMINE 6G DETERMINED USING TRANSIENT THERMAL LENS TECHNIQUE

1999 ◽  
Vol 13 (16) ◽  
pp. 563-576 ◽  
Author(s):  
C. V. BINDHU ◽  
S. S. HARILAL ◽  
V. P. N. NAMPOORI ◽  
C. P. G. VALLABHAN
Keyword(s):  
Quantum Yield ◽  
Thermal Lens ◽  
Fluorescence Quantum Yield ◽  
Rhodamine 6G ◽  
Excited State Absorption ◽  
Fluorescence Yield ◽  
Dual Beam ◽  
Yield Values ◽  
Transient Thermal ◽  
Absolute Fluorescence

Dual beam thermal lens technique is successfully employed for the determination of absolute fluorescence quantum yield of rhodamine 6G laser dye in different solvents. A 532 nm radiation from a Q-switched Nd:YAG laser was used for the excitation purpose. The fluorescence quantum yield values are found to be strongly influenced by environmental effects. It has been observed that fluorescence yield is greater for rhodamine 6G in ethylene glycol system than in water or in methanol. Our results also indicate that parameters like concentration of the dye solution, aggregate formation and excited state absorption affect the absolute values of fluorescence yield significantly.

scholarly journals Effect of Adsorption Characteristics of Rhodamine 6G Dye Solution in Fe3O4 Magnetic Nanoparticles on Fluorescence Quantum Yield

2019 ◽  
Vol 2019 ◽  
pp. 1-5 ◽  
Author(s):  
Suwaphit Phoemphoonthanyakit ◽  
Panpailin Seeharaj ◽  
Pattareeya Damrongsak ◽  
Kitsakorn Locharoenrat
Keyword(s):  
Magnetic Nanoparticles ◽  
Quantum Yield ◽  
Fluorescence Quantum Yield ◽  
Significant Contribution ◽  
Adsorption Mechanism ◽  
Dye Removal ◽  
Rhodamine 6G ◽  
Treatment Time ◽  
Hazardous Pollutants ◽  
Rhodamine 6G Dye

In this work, the use of Fe3O4 magnetic nanoparticles in the adsorption of rhodamine 6G solution was evaluated via absorbance and fluorescence spectroscopy using the UV-Vis spectrometer. The adsorption mechanism of rhodamine 6G on Fe3O4 was determined with respect to the adsorbent dosage (2.5–10 mg/L) and treatment time (0–150 min). The experimental data revealed that the fluorescence quantum yield of rhodamine 6G was inversely proportional to the percentage of dye removal. The highest efficiency of dye removal was obtained at 10 mg/L Fe3O4, and the adsorption capacity was about 150 mg/g, together with a reduced treatment time of 30 min, owing to active adsorption of Fe3O4. We believe that our study makes a significant contribution to the literature because Fe3O4 magnetic nanoparticles were found to be able to quench rhodamine 6G dye molecules, which will aid in eliminating toxic and hazardous pollutants from dye wastewater, which are otherwise detrimental to the environment and human health.

scholarly journals The Spectroscopic Behaviour of Rhodamine 6G in Liquid and Solid Solutions

2008 ◽  
Vol 5 (1) ◽  
pp. 107-114
Author(s):  
Baghdad Science Journal
Keyword(s):  
Quantum Yield ◽  
Dimethyl Sulfoxide ◽  
Solid Solutions ◽  
Rhodamine 6G ◽  
Radiative Lifetime ◽  
High Concentration ◽  
High Energies ◽  
Concentrated Solution ◽  
Chloroform Methanol ◽  
Rhodamine 6G Dye

Absorption, fluorescence, quantum yield and lifetime of rhodamine 6G in chloroform, methanol and dimethyl sulfoxide were measured. From a comparison of these quantities, with those for solid solutions (solid solutions are obtained by mixing constant volume proportions of dye at a concentration of 1*10-4M/l with different volume proportions from the concentrated solution of polymer in chloroform and dimethyl sulfoxide). The results showed that the addition of polymer to liquid concentrated solutions (1*10-4M/l )of rhodamine 6G dye from expecting [which leading to development active medium for laser dye at high concentration] increase the spectra shift toward high energies, and the luminescence quantum yield but decreasing radiative lifetime.

Investigations of the Reversible Energy Transfer in Concentrated Dye Solutions

1987 ◽  
Vol 42 (12) ◽  
pp. 1451-1455 ◽  
Author(s):  
C. Bojarski ◽  
G. Żurkowska
Keyword(s):  
Energy Transfer ◽  
Theoretical Model ◽  
Quantum Yield ◽  
Rhodamine B ◽  
Fluorescence Quantum Yield ◽  
Rhodamine 6G ◽  
Experimental Results ◽  
High Concentration ◽  
Concentration Region ◽  
Dye Solutions

In the system rhodamine 6G (donor)/rhodamine B (acceptor) the reverse energy transfer considerably increases the donor fluorescence quantum yield, particularly in the high concentration region. These experimental results confirm a theoretical model with no adjustable parameters.

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