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Grafting Poly(4‐vinylpyridine) with a Second‐Order Nonlinear Optically Active Nickel( II ) Chromophore
Author(s) -
Caruso Ugo,
Centore Roberto,
Panunzi Barbara,
Roviello Antonio,
Tuzi Angela
Publication year - 2005
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200400903
Subject(s) - chromophore , chemistry , nickel , polymer chemistry , ligand (biochemistry) , polymer , metal , pyridine , acentric factor , octahedron , crystal structure , photochemistry , crystallography , organic chemistry , biochemistry , receptor
Metal‐containing polymers are obtained by grafting commercial poly(4‐vinylpyridine) (average molecular weight 60000 or 160000) with a Ni II chromophore complex. The metal‐containing chromophore was obtained from a tridentate benzoylhydrazine ligand. Chromophore fragments were grafted onto the polymer by formation of a coordinative bond between the metal and the pyridinic nitrogen. Two acentric mononuclear Ni II complexes containing pyridine as an additional ligand, in a square‐planar or in an octahedral environment, have been prepared and characterised also by single‐crystal X‐ray analysis. The chemical and thermal properties of the model complexes and of the grafted polymers were examined and compared with those of Cu II ‐ and Pd II ‐based ones, in particular with reference to their NLO properties. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)