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The DCM (4-dicyanomethylene-2-methyl-6-p-dimethylaminostyryl-4H-pyran) dye molecule is known as one of the best laser dyes. The photodynamics of that dye and its three fluorinated derivatives in polar and nonpolar solvents using nanosecond and picoseconds spectroscopies has been investigated. It was found the large difference in photophysical and laser properties of DCM and fluorinated derivatives...
The fluorescence spectra, quantum yields and kinetics of protonated (PSBR) and unprotonated (SBR) Schiff bases of retinal in different solvents were investigated at room temperature. The emission quantum yields and lifetimes show that the S 1 → S 0 transition is strongly forbidden in SBR and allowed in PSBR. The allowed SBR S 2 → S 0 emission is observed and the S...
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