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A series of new 1,3,5-triaryl-2-pyrazolines (1b–12b) having one to twelve carbon alkyloxy side chains were synthesized and characterized on the basis of their spectral (IR, 1 H & 13 C NMR and GC–MS) and microanalytical data. The UV–Vis and emission spectroscopy was used to study the effect of alkyloxy chain length on absorption and fluorescence properties of 1b–12b. All the compounds...
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