Results 151 to 160 of about 5,137 (171)

Fluorescence quenching of rhodamine 6G in methanol at high concentration

Chemical Physics, 1986
Abstract The fluorescence lifetime of rhodamine 6G dissolved in methanol is measured over a wide concentration region from 10 −5 to 0.6 mol/l. The rapid reduction of fluorescence lifetime above 10 −2 mol/l is found to be mainly due to energy transfer to quenching centers.
Penzkofer, Alfons, Lu, Y.
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Molecular-dynamics simulations of pyronine 6G and rhodamine 6G dimers in aqueous solution

Journal of Molecular Modeling, 2006
We have carried out molecular-dynamics (MD) simulations on dimers of the positively charged laser dyes pyronine 6G (P6G) and rhodamine 6G (R6G) in aqueous solution, generating trajectories of 2.5 ns for various computational protocols. We discuss how the choice of atomic partial charges and the length of the trajectories affect the predicted structures
Khatcharin Siriwong, Khatcharin Siriwong, Parawan Chuichay, Parawan Chuichay, Supot Hannongbua, Notker Rösch, Egor Vladimirov   +6 more
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Optical properties of Rhodamine B and Rhodamine 6G on silver surfaces

Pramana, 1988
The transmission spectra of Rhodamine B and Rhodamine 6G dyes coated on silver island films for various thickness were recorded. A strong coupling between the silver particle plasma resonance and the dye molecules is observed. The absorption of dye molecules increases when the absorption band of individual dyes and silver particles overlaps.
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Fluorescence spectroscopy of Rhodamine 6G: Concentration and solvent effects

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2014
Rhodamine 6G (R6G), also known as Rhodamine 590, is one of the most frequently used dyes for application in dye lasers and as a fluorescence tracer, e.g., in the area of environmental hydraulics. Knowing the spectroscopic characteristics of the optical emission is key to obtaining high conversion efficiency and measurement accuracy, respectively.
Dubravka Pokrajac, John R. Gilchrist, Florian M. Zehentbauer, Johannes Kiefer, Johannes Kiefer, Katherine L. Richard, Claudia Moretto, Thangavel Thevar, Ryan Stephen   +8 more
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Photocatalytic activity of ZnO composites against rhodamine B and rhodamine 6G

Fibers and Polymers, 2015
The development of nanostructures based on interaction of organic matrix and metal oxide particles (such as polypyrrole/zinc oxide composites) introduces interesting advantages due to synergistic/complementary photocatalytic activity of resulting material.
Helinando P. de Oliveira, Ericleiton R. Macedo, Mário César Albuquerque de Oliveira, Keyte Nayara da S. Nascimento, Patricia S. Oliveira   +4 more
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Spectrophotometric determination of uranium with anthranilic acid and rhodamine 6G

Talanta, 1980
The reaction of the uranium-anthranilic acid complex to form an ion-association complex with Rhodamine 6G provides a means for its estimation. The anionic primary complex is suggested to be a mixed-ligand complex of uranium with anthranilic acid and its oxidation products. The method is sensitive ( = 6.25 x 10(4) 1.mole(-1).cm(-1) at 575 nm) and fairly
T.V. Ramakrishna, R.S.Shreedhara Murthy
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Sono-electrocoagulation of wastewater polluted with Rhodamine 6G

Separation and Purification Technology, 2014
Abstract In the present work, coagulation, electrocoagulation and sono-electrocoagulation were compared for the treatment of synthetic wastewater, which consists of a solution of Rhodamine 6G (used as a model of dye). The results are discussed in the light of the well-known coagulation mechanism of dyes.
Alexandra Raschitor, Carmen María Fernández, Pablo Cañizares, Igor Cretescu, Manuel A. Rodrigo   +4 more
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Diffusion of alcohol-rhodamine 6G in polymethyl methacrylate

Journal of Materials Science, 1986
Rhodamine 6G (Rh6G) is impregnated in polymethyl methacrylate by concentration difference diffusion method. The diffusion behaviour of ethanoic and methanoic Rh6G in polymethyl methacrylate at temperatures between 35 and 70° C were studied. The following results were obtained: (a) Visually observed sharp boundary, characteristic of Case II transport ...
Shigeki Tajika, Jun'ichiro Muto
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Degradation of rhodamine 6G in the peroxyoxalate chemiluminescent reaction

Journal of Photochemistry and Photobiology A: Chemistry, 1995
Abstract The degradation process of rhodamine 6G in the peroxyoxalate chemiluminescent system was monitored for the first time. A preferential degradation of rhodamine 6G dimers was suggested and identified spectroscopically. The influence of light irradiation or H 2 O 2 oxidation on dye degradation was insignificant according to our observations ...
Xinqi Song, Fuqun Zhao, Yong Qiu, Yingwu Tang, Fushi Zhang   +4 more
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Emission of Au nanoparticles with and without rhodamine 6G dye

The Journal of Chemical Physics, 2007
We have observed Stokes and anti-Stokes emission of Au nanoparticles suspended in methanol and rhodamine 6G dye solution. Photoluminescence of Au nanoparticles is a three-step process involving single-photon or three-photon excitation of electron-hole pairs, relaxation of excited electrons and holes, and emission from electron-hole recombination ...
V. I. Gavrilenko, Guohua Zhu, M. A. Noginov   +2 more
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