Synthesis and Magnetic Properties of Poly(p-phthaloyl-disacetylaceton-ethylenediimine) Metal Complexes
作者：Yun-Pu Wang, Chun-Peng Chai， Rong-Min Wang
關(guān)鍵字：polymer complexes; magnetic properties;Schiff-base
論文來源：期刊
具體來源：POLYMERS FOR ADVANCED TECHNOLOGIES
發(fā)表時間：2010年
Macrocyclic Schiff-base ligand, bisacetylaceton-ethylene-
diimine (BAE) and its transition metal complexesM
(BAE) (M = Cu2+, Ni2+) were synthesized. The
complexes having characteristics of aromatic systems
and well-defined one-dimensional structures, reacted
with p-phthaloyl chloride, to obtain polymer complexes.
The complexes were characterized by elemental analysis,
inductively coupled plasma (ICP), FT-IR, and thermal
analysis and show good thermal stability. ESR spectra
analysis discovered that there are free radicals in the
chain of polymers, indicating that a weak magnetic spin-
exchange interaction operates between the metal ions and
free radicals. It is found that, as the bridging p-phthaloyl
group is able to propagate the magnetic exchange
interaction, the polymer complexes show paramagnetic
properties by measurement of temperature dependence of
the magnetic property, and obey Curie--Weiss law.