N,N′‐diethoxy‐4,4′‐azobis(pyridinium) hexafluorophosphate (DEAP) has been synthesized by alkylation of the corresponding N‐oxide and characterized. DEAP exhibits UV induced cis–trans isomerization with absorptions at around λ = 459 and 360 nm, respectively. The ability of the DEAP ion to act as a photoinitiator for the cationic polymerization of cyclohexene oxide and N‐vinylcarbazole is demonstrated. The initiation step involves the decay of the excited state of the trans form of the salt with homolytic bond rupture of the nitrogen–oxygen bond. Its potential use as a photoinitiator for free radical polymerization is also demonstrated using methyl methacrylate monomer as the example.magnified image
Four new macrocyclic compounds with thiophene (L1 and L2) and furan (L3 and L4) rings were synthesized and characterized by IR, 1 H NMR, 13 C NMR, and Q-TOF spectral data. Macrocyclic amides (L1, L2, L3, and L4) were tested for ion transportation with Na + and K + ions, and also, antimicrobial activities were investigated against the Gram-negative Escherichia coli ATCC 25922, Grampositive Staphylococcus aureus ATCC 25923, Gram-negative Listeria monocytogenes ATCC 19115, Gram-negative Salmonella typhimurium ATCC 14028, Bacillus cereus bacteria, and Candida albicans ATCC 10231 for all amides.
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