Now showing items 1-10 of 576
Selective quenching of triplet excited states of pteridines
(Royal Society of Chemistry, 2014-06)
Steady-state and time-resolved studies on quenching of excited states of pterin (Ptr) and lumazine (Lum) in the presence of iodide in aqueous solution have been performed. In contrast to the typical iodide enhancement in ...
Triplet state energy of the carotenoid bixin determined by photoacoustic calorimetry
(Elsevier Sci LtdOxfordInglaterra, 2007)
Comparison of the Kinetics of Electron Transfer in the Diffusion Limit for the Singlet and Triplet Quenching of Eosin Y by Quinones
Electron transfer (ET) rate constants were determined by means of lifetime measurements for the fluorescence quenching and by laser flash photolysis for the triplet quenching of the dye eosin Y by benzoquinones in acetonitrile. ...
Caracterización espectroscópica y fotofísica del estado triplete de colorantes en sistemas heterogéneosPhotophysics and spectroscopic characterization of triplet state dyes in heterogeneous systems
(Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires, 2010)
Photophysics of thionine in AOT and BHDC reverse micelles. Quenching of the triplet state by aliphatic amines studied by transient absorption spectroscopy
(Elsevier Science Sa, 2017-09)
The photophysics of thionine (3,7-diamino-5-phenothiazinium) (Th+) was investigated in reverse micelles (RMs) of sodium bis(2-ethylhexyl)sulfosuccinate (AOT) and benzyldimethylhexadecylammonium chloride (BHDC) with special ...
Properties of singlet- and triplet-excited states of hemicyanine dyes
The fluorescence emission spectra and fluorescence quantum yields of hemicyanine dyes LDS 698, LDS 722, and LDS 730 were measured in different media. No transient species was detected in the laser flash-photolysis experiments ...
Effect of Concentration on the Formation of Rose Bengal Triplet State on Microcrystalline Cellulose: A Combined Laser-Induced Optoacoustic Spectroscopy, Diffuse Reflectance Flash Photolysis, and Luminescence Study
(American Chemical Society, 2014-08)
Laser-induced optoacoustic spectroscopy (LIOAS), diffuse reflectance laser flash photolysis (DRLFP), and laser-induced luminescence (LIL) have been applied in conjunction to the determination of triplet state quantum yields ...
Líquido iônico [bmim.PF6] como solvente: um meio conveniente para estudos por fotólise por pulso de laser
The spectroscopic behavior of thioxanthone and benzil (diphenylethanedione or dibenzoyl) in the ionic liquid [bmim.PF6] has been investigated employing the laser flash photolysis technique. Triplet-triplet absorption spectra ...