LANGMUIR-BLODGETT LAYERS OF A COORDINATION POLYMER WITH A BIFUNCTIONAL SCHIFF-BASE

A coordination polymer has been formed at the water surface by reactio n of the bifunctional ligand methylenebis(N-hexadecylsalicylidenamine) (MBSH) with bivalent metal ions, dissolved in the subphase. Studies h ave been carried out to elucidate the structure of this polymer in mon olayers at the water surface as well as in Langmuir-Blodgett multilaye rs. Results with a similar low-molecular compound are included in the discussion. The collapse area in the monolayer at the water surface wa s strongly dependent on the metal ion concentration. The infrared spec trum of the copper complex Langmuir-Blodgett layer suggests complete c onversion of MBSH, since no absorption of the free ligand could be det ected. FTIR spectra revealed further, that complexation of copper ions took place between the nitrogen and the oxygen atom of the ligand. (C ) 1998 Elsevier Science S.A. All rights reserved.