Metal complexes of polyesters |
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| Affiliation: | 1. Dipartimento di Ingegneria e Scienze dell’Informazione e Matematica, Università degli studi dell’Aquila, Via Vetoio (Coppito), 67100 L’Aquila, Italy;2. Dipartimento di Scienze Fisiche e Chimiche, Universitá degli studi dell’Aquila, Via Vetoio (Coppito), 67100 L’Aquila, Italy;1. School of Chemical Engineering, Northwest University, Xi’an, Shaanxi 710069, China;2. State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China;3. Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;1. Universitat Rovira i Virgili, Campus Sescelades, Marcelí Domingo, s/n, 43007 Tarragona, Spain;2. University of Bergen, P.O. Box 7803, 5020 Bergen, Norway;3. Johnson Matthey Technology Centre, Blount’s Court, Sonning Common, Reading RG4 9NH, UK;1. Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell’Aquila, Via Vetoio 10, 67010, Coppito, AQ, Italy;2. Dipartimento di Chimica, Università di Roma “Sapienza”, Piazzale Aldo Moro 5, 00185, Roma, Italy;3. Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Esfera UAB, Campus UAB s/n, E-08193, Cerdanyola del Vallès, Spain;4. Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Campus Universitari de Bellaterra, E-08193, Cerdanyola, Spain;1. AGH University of Science and Technology, Faculty of Energy and Fuels, Al. A. Mickiewicza 30, 30-059, Krakow, Poland;2. AGH Centre of Energy, AGH University of Science and Technology, Ul. Czarnowiejska 36, 30-054, Krakow, Poland;3. Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Al. A. Mickiewicza 30, 30-059, Krakow, Poland;4. Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569, Stuttgart, Germany;5. Department of Physics, Northern Illinois University, DeKalb, IL, 60115, USA;6. Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland |
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| Abstract: | Polyesters obtained from 2,5-dihydroxyterephthalic acid and 1,n-alkanediols were used to complexate the metal ions Mg2+, Ca2+, Sn2+, Pb2+, Ga3+, In3+, Bi3+, Si4+, Ce3+, UO22+, Mn2+, Mn3+, Co2+, Ni2+, Cu2+, Zn2+ and Cd2+. The metal ions are always six-coordinated with additional ligands (mostly H2O) besides the four from the polyester system. The H2O-ligands can be removed by heating in vacuum, as was proven for the complexes of Mn2+, Co2+, Ni2+ and Cu2+, and are added again in moist air. For the waterfree Ni2+-complex a tetrahedral surrounding is suggested by magnetic measurements. Polymerization degrees of the polyesters were found to be 30–70 by the membrane osmometric method. Thermal stabilities of the metal complexes (200– 300 °C) are less than those of the polyesters themselves (300–350 °C). |
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