<正>Introduction In recent years,there has been considerable interest in complexes formed by lanthanide cations and various benzoate derivatives[1-4],due to the
A soluble poly(meta-phenylene)derivative with rigid twisted biphenyl unit was synthesized by the Yamamoto coupling reaction.The polymer is soluble in common org
A new chromatographic method is described for the determination of specific refractive index increment(dn/dc)μ at a constant chemical potential,for polymer/mix