@article{LavrenkoSchulzStrelinaetal.1997,
  author    = {Lavrenko, Peter N. and Schulz, Burkhard and Strelina, Irina A. and Okatova, Olga V.},
  title     = {Synthesis and molecular properties of new poly(naphthalene-1,3,4-oxadiazole)s},
  year      = {1997},
  abstract  = {Poly[(1,4-naphthalene)-2,5-diyl-1,3,4-oxadiazole] and poly[(2,6-naphthalene)-2,5-diyl-1,3,4-oxadiazole] have been synthesized and investigated in conc. H2S04, by the flow birefringence method in comparison with poly(1,4- phenylene)-2,5-diyl-1,3,4-oxadiazole]. Changes in conformation parameters and optical anisotropy of a chain unit induced by incorporation of the naphthalene groups into the macromolecule backbone have been evaluated.},
  language  = {en}
}
@article{LavrenkoStrelinaSchulz1997,
  author    = {Lavrenko, Peter N. and Strelina, Irina A. and Schulz, Burkhard},
  title     = {Dynamo-optical properties of poly(naphthylene oxadiazole)s in sulfuric acid},
  year      = {1997},
  abstract  = {Flow birefringence induced in dilute solutions of poly[(1,4-naphthylene)-2,5-diyl-1,3,4-oxadiazole] and poly[2,6-naphthylene)-2,5-diyl-1,3,4-oxadiazole] in conc. sulphuric acid has been investigated. The shear optical coefficient was found for these polymers to be approximately double the value of that obtained in the same solvent for poly[(para-phenylene) -2,5-diyl-1,3,4-oxadiazole]. Rigid-chain behaviour of the polymers was characterized by hydrodynamic and dynamo-optical parameters evaluated with application of the worm-like chain model and the "method of similar structures". Change in optical anisotropy of a chain unit induced by incorporation of naphthylene groups into the main chain has been evaluated.},
  language  = {en}
}