1,4-Bis(5-phenyl-2-oxazolyl)-benzene Cas:1806-34-4 Yellow crystalline powder
Catalog Number | XD90819 |
Product Name | 1,4-Bis(5-phenyl-2-oxazolyl)-benzene |
CAS |
1806-34-4 |
Molecular Formula |
C24H16N2O2 |
Molecular Weight |
364.4 |
Storage Details | Room Temperature |
Harmonized Tariff Code | 29349990 |
Product Specification
Appearance | Yellow crystalline powder |
Assay | 99% |
We describe a new method for the analysis of phase-sensitive fluorescence emission spectra. This method permits the resolution of three-component mixtures using spectra measured at a single modulation frequency. Phase-sensitive spectra are recorded using one modulation frequency, at a number of arbitrary detector phase angles. It is not necessary to suppress any one component. The spectra are then used to estimate the component lifetimes and steady-state fractional intensities using a nonlinear least-squares analysis procedure. The only requirement for the analysis is the knowledge of the steady-state spectra of the individual components. This procedure allowed the resolution of a two-component mixture of 9-methylanthracene (4.5 ns) and 9,10-diphenylanthracene (5.9 ns). It should be noted that resolution of two lifetimes which differ by only 30% is a difficult task. Additionally, we resolved a three-component mixture with lifetimes that differed fourfold: p-bis[2-(5-phenyloxazolyl)]ben zene (1.3 ns), 9-methylanthracene (4.5 ns), and 9,10-diphenylanthracene (5.9 ns). Conveniently, the technique utilizes a commercially available fixed-frequency phase fluorometer.