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Synthesis and proton conductivity of anhydrous dendritic electrolytes

100%
Şenel M., Tülü M., Bozkurt A.
Open Chemistry
|
2007
|
vol. 5
|
issue 2
546-556
EN
Water soluble PEG cored dendritic hexa-acid which comprises peripheral carboxylic acidic groups were prepared via nucleophilic substitution reactions. Novel anhydrous proton conducting electrolytes were prepared by incorporation of the heterocyclic protogenic solvent imidazole (Im) into PEG cored dendritic hexa acid, (PEG-HA), at several molar ratios of Im to-COOH units of PEG-HA. The complexation of PEG-HA and Im was illustrated by infrared spectroscopy (FT-IR). The materials are thermally stable up to 150 °C as evidenced by thermogravimetry analysis (TGA). Differential scanning calorimetry (DSC) results verified that the organic electrolytes are homogeneous and amorphous. The proton conductivities were characterized by means of AC impedance spectroscopy and a maximum conductivity of 1 × 10−3 S/cm was measured at 120 °C in the anhydrous state. [...]
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Synthesis and characterization of novel pyrimidine derivatives of N-pentyl-2,7-diphenyl-3,8a-dihydroimidazo[1,2-a]pyrimidin-3-amine via 4-phenylpyrimidin-2-amine

75%
Ramade K. R., Rojivadiya A. J., Naliapara Y. T., Babariya J. S.
World News of Natural Sciences
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2021
|
vol. 37
92-101
EN
The target compound N-pentyl-2,7-diphenyl-3,8a-dihydroimidazo[1,2-a]pyrimidin-3-amine have been synthesized by4-phenylpyrimidin-2-amine with Triflouro acetic acid and benzyldehyde. The obtained products were characterized by 1H NMR, Mass and IR Spectra. Purity of all the compounds has been checked on thin layer chromatographic plate and NMR analysis technique.
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