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An aqueous two-phase system of dodecyl triethylammonium bromide (C 12 NE, cationic surfactant) and sodium dodecyl sulfate (SDS, anionic surfactant) mixture is proposed for the extraction of some dyes and porphyrin compounds. Transparent two phase-systems are formed when the surfactant concentrations and C 12 NE/SDS ratios are in certain regions. In this study, the aqueous two phase-systems...
In our previous work, we reported that with TlNO 3 as a heavy atom perturber and Na 2 SO 3 as a deoxygenator, room temperature phosphorescence (RTP) emission of dansyl chloride and its amino acid derivatives can be induced directly from their aqueous solution without a protective medium. Is this kind of fluid luminescence phenomenon unique for the dansyl chloride compounds?...
Molecular structures of the two tautomers of a β-diketone 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone (PMBP) were studied by MS, UV, IR, and X-ray diffraction methods. The mass spectra show little difference for the two forms of PMBP, while there are notable differences in the IR spectra as KBr pellets and in the UV spectra in different solvents for the keto- and enol-PMBP. The keto- and enol-PMBP were...
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