HPLC of Formula: 2208-59-5. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 2-(Pyridin-4-yl)-1H-benzo[d]imidazole, is researched, Molecular C12H9N3, CAS is 2208-59-5, about Ground and excited state prototropism of 2-(4′-pyridyl)benzimidazole in micelles. Author is Khorwal, Vijaykant; Datta, Anindya.
The effect of micelles on ground and excited state prototropism of 2-(4′-pyridyl)benzimidazole (4PBI) has been studied by fluorescence spectroscopy. It has been observed that in sodium dodecyl sulfate (SDS) micelle, 4PBI is preferentially protonated at the pyridyl nitrogen atom, in contrast to the situation in neat aqueous solutions, in which imidazole and pyridyl nitrogen atoms have equal propensity for protonation. In SDS, the protonation of the benzimidazole nitrogen occurs only in the excited state. Such effects are not observed in cationic cetyl tri-Me ammonium bromide (CTAB) and neutral Triton X-100 (TX-100). Thus, 4PBI shows very good sensitivity for neg. charged interfaces between aqueous and apolar compartments in microheterogeneous media.
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Reference:
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