Luminiscent dye Rhodamine 6G doped monolithic and transparent TEOS silica xerogels and spectral properties
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Luminiscent dye Rhodamine 6G doped monolithic and transparent TEOS silica xerogels and spectral properties
Sol–gel process was used for the preparation of Rhodamine 6G (R6G) doped silica xerogels, using tetraethylorthosilicate [TEOS, Si(OC2H5)4] as the precursor for the silica network. Silica alcosol was prepared by hydrolysis and polycondensation of ethanol (EtOH) diluted TEOS in the presence of citric acid (CTA) catalyst. The ethanolic R6G was added to the alcosol to trap R6G molecules inside the ...
متن کاملPreparation and Spectroscopic Studies of Rhodamine 6G Doped Polystyrene
In the present work, polys tyrene (Ps) doped with Rhodamine 6G was prepared. The infrared absorption spectra were obtained and dis c u s s e d in the range (400-4000 cm ). A new band appeared -1 2 at 3300 cm due to NH in the spectra of PSRhodamine 6G. In the spectra of Ps – Rhodamine 6 -1 G this band appeared at 1599 ass igned to C = O s tretching vibration. This is due to interaction between t...
متن کاملEXAFS study of Tb-doped silica xerogels.
Francesco Rocca, a• Francesca Monti, b Alexei Kuzmin, c Alberto Dalmaso a'd and Donatella Pasqualini d particular, we are interested in characterising the strong distortion produced during the final process of the xerogels preparation: the long time high temperature treatment, in fact, results in an overall relaxation of the silica network and in the elimination of the wet components, from prec...
متن کاملDynamics of molecular diffusion of rhodamine 6G in silica nanochannels.
We describe a method to study diffusion of rhodamine 6G dye in single silica nanochannels using arrays of silica nanochannels. Dynamics of the molecules inside single nanochannel is found from the change of the dye concentration in solution with time. A 10(8) decrease in the dye diffusion coefficient relative to water was observed. In comparison to single fluorescent molecule studies, the prese...
متن کاملReciprocal passive mode locking of a rhodamine 6G dye laser and the Ar(+) pump laser.
A rhodamine 6G dye laser, internally pumped within the extended cavity of an Ar(+)-ion laser, is mode locked when its cavity length is matched to half that of the pump laser: the 5145-A argon laser line is passively mode locked by the combination of the saturable absorption and the lasing action of the dye, which is in turn synchronously pumped and mode locked. Tunable (5650-5950-A) ~10 psec pu...
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ژورنال
عنوان ژورنال: Science and Technology of Advanced Materials
سال: 2003
ISSN: 1468-6996,1878-5514
DOI: 10.1016/s1468-6996(02)00042-6