Articolo in rivista, 2014, ENG, 10.1002/pola.27255

Rigid chain ribbon-like metallopolymers

Carella A.; Borbone F.; Roviello G.; Caruso U.; Ferone C.; Ricciotti L.; Pirozzi B.; Persico P.; Schieroni A.G.; Roviello A.

Chemical Sciences Department, University of Naples Federico II, Complesso Universitario Monte sant'Angelo, via Cintia snc, Naples 80126, Italy; Department of Technology, University Parthenope of Naples, Faculty of Engineering, Centro Direzionale Isola C4, Naples 80143, Italy; Institute for Macromolecular Studies (ISMAC), National Research Council of Italy, via Bassini 15, Milan 20133, Italy

A set of new copolymers is here reported in which the repeating units are connected each other through Cu(II) metal centers. The coordination link is based on the bis-chelating properties of salicylaldiminate groups of two different monomers. Due to their chemical structure, the two monomers afford, respectively, flexible and rigid repeating units in the metallocopolymers constitution upon coordination to copper centers. All the copolymers were soluble and easily processable. As shown by XRD analysis, rigid units' rich copolymers adopt a ribbon-like structure in solid state in which highly planar strands of polymer stack thanks to ?-? interactions, similarly to the polymer composed exclusively by rigid units. This behavior can be justified assuming the existence of a partial block character in copolymer constitution where long sequences of rigid units are alternated to sequences of flexible units. This assumption is supported also by DSC and UV-Vis analysis. © 2014 Wiley Periodicals, Inc.

Journal of polymer science. Part A, Polymer chemistry (Online) 52 (17), pp. 2412–2421

Keywords

copolymerization, differential scanning calorimetry, metal-polymer complexes, UV-Vis spectroscopy, X-ray

CNR authors

Persico Paola, Giacometti Schieroni Alberto

CNR institutes

IBB – Istituto di biostrutture e bioimmagini, ISMAC – Istituto per lo studio delle macromolecole