简介：FifteennewpolyesterligandswerepreparedbycopolymerizationofEDTA(ethylenediaminetertraaceticacid)dianhydrideorDTPA(diethylenetriaminepentaaceticacid)dianhydrideanddihydricalcoholordihydricphenol.Theirparamagneticmetalcomplexeswerealsosynthesized.Allpolyesterligandsandmetalcomplexeswerecharacterizedby^1HNMR,IRspectraandelementalanalyses.Preliminarystudyshowedthatthepolyestermetalcomplexeshadhigherrelaxationeffectivenessascomparedtocorrespondingsmallmolecularmetalcomplexes.
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