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Опубликовано 1995-10-00 На SciPeople2011-04-22 ЖурналRussian Chemical Bulletin

Heterocyclic derivatives of long-chain diacetylenic acids

O. M. Usov, E. V. Tret'yakov, L. L. Sveshnikova and M. S. Shvartsberg / Олег Усов

Аннотация

Acyl derivatives of 2-aminopyridine, 2-aminopyrimidine, 4-amino-2,2,6,6-tetramethylpiperidine-1-oxyl, and 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl were obtained from long-chain diacetylenic acyl chlorides and the corresponding heterocyclic compounds. Spreading isotherms of monolayers on a water surface show that lengthening of the hydrocarbon chain and replacement of the pyridyl groups in these compounds by the more hydrophilic pyrimidyl groups render the films more condensed. Long-chain acyl derivatives of nitroxyl radicals form monolayers possesing a low collapse pressure. ESR spectra of Langmuir-Blodgett films of these radicals before and after photopolymerization were recorded.