Luminescent visible emitters

Emission spectra have been recorded for four aryl-substituted isoindoles rmder conditions of electrochemical stimulation. Electrochemiluminescence, which was easily visible in daylight, was measured at a concentration of 2-10 mM of emitter in V jV-dimethylformamide with platinum electrodes. Emission spectra due to electrochemi-luminescence and to fluorescence were found to be identical, and quantum yields for fluorescence were obtained by irradiation with a calibrated Hght source. Values are given in Table X. As with peak potentials determined by cyclic voltammetry, the results of luminescence studies are interpreted in terms of radical ion intermediates. ... 

The most important one is the efficient luminescence in the near infrared and the whole visible range. In addihon, PS is an active host for rare earth emitters, for example, Nd of Er, as well as dye solutions. 

Monocyclic Phosphoranes - A study of the spectral composition of luminescence and of the kinetics of attenuation of chemiluminescence during the thermal decomposition of triphenylphosphite ozonide, has shown that the emitter of chemiluminescence in the i.r. region is singlet oxygen whereas the emitter in the visible region is triphenyl phosphate. 

Polyvinyl alcohol oxidation affected by hydrogen peroxide in the presence of ferrous sulfate (II) in aqueous solutions is accompanied by chemiluminescence in the visible spectrum (Fig. 23.6). In Fig. 23.6, it is seen that luminous intensity passes through a maximum. This facts shows that luminescence emitter is an intermediate product of liquid-phase PVA oxidation. The analysis of the kinetic curve of chemiluminescence intensity showed that its initial part is well linearized (Fig. 23.6, the correlation index r = 0.998) in the equation coordinates... 

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