Results 1 to 10 of about 132,093 (201)

The rhodamine B intercalation of montmorillonite

Journal of Colloid and Interface Science, 2004
Using photometric methods the dissociation constants and weight fractions of rhodamine B dimer in water solutions at different concentrations were determined. The montmorillonite (SWy) samples were fully intercalated with rhodamine B (RhB) solutions at various monomer/dimer ratios.
Z, Klika, H, Weissmannová, P, Capková, M, Pospísil   +3 more
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Acute Exposure to Rhodamine B

Journal of Toxicology: Clinical Toxicology, 1987
Rhodamine B is a red colored dye that is used in cosmetic products. We report a case of 17 patients who were exposed to aerosolized Rhodamine B inside a maintenance shop. The mean duration of exposure was 26 minutes (range 2-65). Sixteen of the patients (94%) complained of acute symptoms including: burning of the eyes (82%), excessive tearing (47 ...
D J, Dire, J A, Wilkinson
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Mediation of rhodamine B photodegradation by biochar

Chemosphere, 2020
Significant degradation of organic contaminants in biochar sorption systems has recently been reported, demonstrating a promising potential application of biochar in pollution control. We hypothesized that the degradation of organic chemicals by biochar may be further enhanced under irradiation by UV light due to the photocatalytic activities of ...
Danping, Wu, Fangfang, Li, Quan, Chen, Min, Wu, Wenyan, Duan, Qing, Zhao, Bo, Pan, Baoshan, Xing   +7 more
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Studies of the metabolism of Rhodamine B

Toxicology and Applied Pharmacology, 1961
Abstract Rhodamine B (D & C Red No. 19) was metabolized identically in the dog, rat, and rabbit as evidenced by paper chromatograms and paper electrophoretograms of their urines and fecal extracts. The dye was extensively absorbed from the gastrointestinal tract at low dietary levels.
J M, WEBB, W H, HANSEN
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The photophysics of rhodamine B

Journal of Photochemistry, 1982
Abstract The effects of solvent viscosity and dielectric constant on the photophysics of rhodamine B in its protonated and zwitterion forms were studied. The internal conversion rate is dependent on the S 1 -S 0 energy separation and increases when this gap is lowered through rotation of the diethylamino groups. Comparison is made with rhodamine 640
M.J. Snare, F.E. Treloar, K.P. Ghiggino, P.J. Thistlethwaite   +3 more
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Application of solutions of Rhodamine B in dosimetry

Applied Radiation and Isotopes, 2014
Aqueous solutions of the organic dye Rhodamine B were found to be useful in measuring radiation doses in the range 0.1-2 kGy. Either spectrophotometric or spectrofluorometric measurements can be used. The dosimeter readout is unchanged for at least 60 days after irradiation if the solution is kept in the dark at room temperature.
W B, Beshir, S, Eid, S M, Gafar, S, Ebraheem   +3 more
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Electrooxidation of rhodamine B hydrazide

New Journal of Chemistry, 2023
The electrooxidation of rhodamine B hydrazide is shown to produce rhodamine B, a phenanthrenone derivative, and a phtalazinone derivative.
Nikita Belko, Hanna Maltanava, Anatol Lugovski, Sviatlana Fatykhava, Polina Shabunya, Anastasiya Tabolich, Michael Samtsov, Sergey Poznyak   +7 more
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On the aggregation of rhodamine B in ethanol

Chemical Physics Letters, 1988
Abstract The dimer and the trimer aggregation constants of the cationic form of rhodamine B are determined in very concentrated ethanolic solutions of the dye. The absorption spectrum, the geometrical structure and the association bonding of the aggregates are discussed and compared with those previously obtained in aqueous solution.
F.López Arbeloa, P.Ruiz Ojeda, I.López Arbeloa   +2 more
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Aggregation of Rhodamine B in Water

Russian Journal of Applied Chemistry, 2004
Protolytic and associative equilibria in aqueous solutions of rhodamine B were studied. The curves of potentiometric titration with NaOH solution of the dye hydrochloride within the 5 ×10-4-3 ×10-2 M range and at an ionic strength of 0.1 M (NaCl or KCl) were treated by chemometric methods of successive modification of the equilibrium system models with
N. O. Mchedlov-Petrosyan, Yu. V. Kholin
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Dimer spectra of rhodamine B

Chemical Physics Letters, 1973
Abstract The visible absorption fluorescence and phosporescence spectra and the polarized fluorescence and phosphorescence excitation spectra have been measured for the dimer form of rhodamine B. The rhodamine B dimer is somewhat unique in that it exhibits both fluorescence and phosphorescence whereas other dyes usually exhibit only phosphorescence ...
Takashi Kajiwara, Richard W. Chambers, David R. Kearns   +2 more
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