Accession Number : ADA294533
Title : NMR Characterization of Polymers Formed in Diazotizing Mixtures of Luminol and 3-Amino-L-Tyrosine.
Descriptive Note : Final rept., 15 Oct 93-14 Feb 95,
Corporate Author : SOUTHEASTERN OKLAHOMA STATE UNIV DURANT
Personal Author(s) : Wright, John R.
PDF Url : ADA294533
Report Date : 12 APR 1995
Pagination or Media Count : 48
Abstract : The work reported here focused on chemical characterizations of a polymer with interesting luminescent properties, which promises to be useful as an analytical tool in studies of radiofrequency energy deposition in dielectric absorbers. The polymer is formed by diazotizing a mixture of luminol and 3-amino-L-tyrosine and, after removing the aqueous solvent by acetone precipitation, aging the diazotized products for a month at 50 C (i.e., a solid-state reaction). The polymer is anionic and may be precipitated with barium divalent cation. For the purpose of further structural characterizations it was found that this water-soluble polymer may be fragmented by digestion in an aqua regialike mixture (50:50 concentrated HCl/HNO3 ), which converts the broadline hydrogen NMR spectrum typical of polymers to a complex pattern of narrow lines. jg
Descriptors : *NUCLEAR MAGNETIC RESONANCE, *POLYMERS, CATIONS, FRAGMENTATION, WATER, ENERGY, DIELECTRICS, HYDROGEN, MIXTURES, DEPOSITION, PRECIPITATION, RESPONSE, ABSORBERS(MATERIALS), PATTERNS, SOLVENTS, VALENCE, LUMINESCENCE, ACETONES, RADIOFREQUENCY, BARIUM, SOLID STATE ELECTRONICS, TYROSINE, HYDRAZIDES.
Subject Categories : Polymer Chemistry
Distribution Statement : APPROVED FOR PUBLIC RELEASE