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Paper reports the synthesis and spectroscopic studies of two novel 1-Methyl-3-phenyl-1H-pyrazolo[3,4-b]quinoxaline (PQX) derivatives with 6-substituted methyl (MeMPPQX) or methoxy (MeOMPPQX) side groups. The optical absorption and fluorescence emission spectra are recorded in solvents of different polarity. Steady state and time-resolved spectroscopy provide photophysical characterization of MeMPPQX...
The synthesis and spectroscopic studies of two novel halogen pyrazoloquinoxaline (PQX) derivatives with 6-substituted fluorine (FPQX) or chlorine (ClPQX) are reported. The optical absorption and fluorescence emission spectra of both dyes are recorded in cyclohexane, tetrahydrofuran and acetonitrile solutions. The spectroscopic characteristics and photophysical constants derived from these measurements...
Paper reports the synthesis and spectroscopic studies of two novel 1,3-diphenyl pyrazoloquinoxaline (PQX) derivatives with 6-substituted methyl (MePQX) or methoxy (MeOPQX) side groups. The optical absorption and fluorescence emission spectra are recorded in solvents of different polarity. Other photophysical constants, such as the fluorescence lifetime and quantum yield, radiationless and radiative...
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