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Showing 1 to 20 of 53 for “"rhodamine b"”.
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Zeolites and Polymer Thin Films as Media for Structuring Light-Induced Electron Transfer Reactions (Rhodamine B, Forster, Energy Migration)
Zeolites are characterized as structural templates for light-induced electron transfer reactions. The main emphasis is on factors affecting loading of Ruthenium tris(bipyridine) (Ru(bpy)(,3)('+2)) into the lattice and explaining luminescent decay data in terms of the molecular environment.
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Energy Transfer Among Fluorescent Molecules Dispersed in Thin Films of Polymer or Protein (Rhodamine B, Sulforhodamine 101, Polyvinyl, Poly (Vinyl Alcohol) Bovine Serum Albumin, Time-Correlated Photon Counting, Lifetimes)
… fluorescence techniques has shown that because rhodamine B (RHB) has an appreciable overlap of absorption and emission spectra, a system of RHB molecules dispersed in poly(vinyl alcohol) (PVOH) can collect light energy and transfer the energy of the excited state, or exciton, among the RHB …
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Micrometer-scale chemical analysis using heated AFM cantilever and mass spectrometer
… In the present work, a caffeine sample and rhodamine B sample were successfully analyzed. The caffeine sample was detected by MALDI mass spectrometry, and rhodamine B sample was detected by fluorescence microscopy.
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The distribution of different fluorescence dyes in the egg and embryo of the zebrafish (Danio rerio)
… better assessment of the effects of side chains, rhodamine b and fluorescein were chosen as basic fluorochromes, which were then modified by diverse substituents that differed in their partition coefficient, molecular size and charge. The substances tested were rhodamine b, sulforhodamine b, …
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Fabrication and applications of fluorescent polymer fibres
… thesis. Polystyrene fibres, doped with either Rhodamine B or polyfluorene, have been produced; Rhodamine B doped fibres were successfully deposited from DMF while the polymer blends required mixed solvents. Suspended PVK fibres have been collected through the use of a custom substrate from …
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Metal oxide heterostructured films with controlled architecture for enhanced photocatalytic properties
… performance of these films for pollutant (Rhodamine B) degradation. In parallel, we explored the inter- action of water with heterostructured (NiO/ZnO) photocatalysts, to interpret the surface reactions and their influence on interfacial band bending, a strategy for understanding the …
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Effects of Metallic Nanoalloys on Dye Fluorescence
… with three fluorophores: rose bengal, rhodamine B, and fluorescein sodium. Depending upon the dye quantum yield and its concentration in solution, enhancement or quenching of fluorescence was obtained. Thus, a three to five times increase in fluorescence intensity was observed in a 2.0 …
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Producing Data to Support the Detection and Understanding of Early On-Set Corrosion in Accelerated Weathering
… aluminum corrosion. The second molecular probe, rhodamine B, was utilized to better understand the direct and differential fluorescent behavior of fluorescein through fluorescence resonance energy transfer (FRET). The polymeric materials were selected to capture a broad range of material types, …
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CLINICAL APPLICATIONS OF CHEMILUMINESCENCE DETECTION
… a high water component in the measurement were rhodamine B in Tris buffer adjusted to pH 8.00, 10('-3) M bis(2,4,6-trichlorophenyl) oxalate (TCPO) in ethyl acetate and 10('-3) M hydrogen peroxide in acetonitrile in the ratio 5:2:3. Under these conditions, the detection limit for rhodamine B is …
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Chemical sensors based on swellable polymer microparticles and molecular imprinted polymers
… o-acrylate/methacryloxethyl thiocarbonyl rhodamine B fluorophore pairs. The particles were cross-linked using between 5--8% N, N-methylenebisacrylamide (MBA) and stabilized in acetonitrile using poly (styrene-co-acrylonitrile). The microparticles were suspended in pH 6 MOP buffer with …
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Synthesis, physico-chemical properties and potential applications of colloidal gel particles
… responsive p(NIPAM-co-5% acrylic acid)-rhodamine B particles were studied. The results confirm the attachment of rhodamine B to the microgel particles. The long chains attached to the particles caused the particles to be poly-dispersed which suggests non-uniformity of particle size and …
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The testing of semiconductor-based adsorption modified photosensitive sensors for their response to a volatile organic compound, oxygen, humidity, and heating
… microns) of a cadmium sulfide layer coated with Rhodamine B fluorescent dye on a glass substrate, were tested for change in photoconductivity due to exposure to different concentrations of gaseous organic molecules in the parts-per-million (ppm) range. It was theorized that the gaseous organic …
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Supramolecular hydrogels based on 1,3,5‐benzene tricarboxamides
… potential even at very low concentrations of rhodamine B, a red dye that acted as model guest compound. The adsorption data were analyzed using different isothermal and kinetic models. The results indicate a favorable and strong but slow adsorption. Furthermore, the hydrogel system fulfills …
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Preparation and Characterization of Spray Dried Fluorescent Micro particles for Controlled Release in the Lungs.
… cellulose and chitosan and two fluorescent dyes, Rhodamine B and Evans blue. The four formulations were prepared by spray drying polymer and dye solutions. Physicochemical characterization of the resulting powders was carried out and included particle yield, encapsulation efficiency, moisture …
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Development of an optical fibre array fluorosensor for monitoring in the aqueous environment.
… M and 10-8 M respectively for Fluorescein and Rhodamine ‘B’. The OFAF offers an alternative and inexpensive method of monitoring and measuring pollutants in the aqueous environment using fluorescence techniques.
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Surface Enhanced Raman Spectroscopy as a Tool for Waterborne Pathogen Testing
… with organic dye molecules. The dye molecules, rhodamine B isothiocyanate (RBITC) and malachite green isothiocyanate (MGITC) were surface enhanced by the gold nanoparticles resulting in unique fingerprint SERS spectra. The SERS label method was successful in detecting G. lamblia and C. parvum …
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Investigation on Light-driven Photocatalyst-based Materials for Wastewater Cleaning and Environmental Remediation
… by degradations of methyl orange (MO) and rhodamine B (RhB) organic dyes. The effects of pH values and stabilities on photocatalytic performance are studied as well. The results reveal that the tube-like Ag3PO4 exhibits greatly high activities for the degradation of RhB solution under …
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Elucidation of chemically-induced transdermal transport processes
… three-dimensional spatial distributions of rhodamine B hexyl ester (RBHE), a model hydrophobic fluorescent probe, and of sulforhodamine B (SRB), a model hydrophilic fluorescent probe, based on a sampling of 4 to 6 different skin sites per skin sample. The fluorescent probe intensity …
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Enhancement of wastewater and sludge treatment processes by hydrodynamic cavitation
… of a toxic and carcinogenic pollutant dye (Rhodamine B, RhB) in waste dye aqueous solutions and on (ii) the improvement of activated sludge solubilisation and aerobic sludge biodegradability in the field of biological wastewater treatments. In order to better understand the fluid dynamics …
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Applications of pump-probe and two-photon techniques in time-resolved fluorescence miscroscopy and spectroscopy
… and rotational correlation time of aqueous rhodamine B are presented. Furthermore, timeresolved, microscopic images deomonstrate this technique's capabilities in obtaining lifetimes and time-resolved polarization information of fluorescent molecules in mouse fibroblast (STO) cells. …
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