Synthesis and characterization of monomeric and polymeric Pd(II) and Pt(II) complexes of 3,4-ethylenedioxythiophene-functionalized phosphine ligands
作者:Kuhamoorthy Velauthamurty、Simon J. Higgins、R. M. Gamini Rajapakse、John Bacsa、Harm van Zalinge、Richard J. Nichols、Wolfgang Haiss
DOI:10.1039/b817210b
日期:——
Phosphine ligands bearing 3,4-ethylenedioxythiophene (EDOT) groups, in which a Ph2P group is either connected directly to the thiophene ring [Ph2P(5–EDOT), 1] or to the EDOT ethylene bridge via a methylene (4) or longer (7) ‘spacer’, have been prepared, together with their complexes cis-[MCl2(L)2] (M = Pd and Pt). The electrochemical co-polymerization of the complexes with EDOT was investigated, with a view to making conducting polymers incorporating covalently-bound metal–phosphine complexes. Although polymer-coated electrodes were obtained in all experiments, XPS measurements established that polymers made in the presence of cis-[MCl2(1)2] consisted only of poly(3,4-ethylenedioxythiophene) (PEDOT), whereas polymers made in the presence of cis-[MCl2(L)2] (L = 4, 7) were genuine co-polymers containing Pd(II) or Pt(II) complexes.
我们制备了带有 3,4-亚乙二氧基噻吩(EDOT)基团的膦配体及其顺式[MCl2(L)2](M = Pd 和 Pt)络合物,其中 Ph2P 基团与噻吩环[Ph2P(5-EDOT), 1]直接相连,或通过亚甲基(4)或长(7)"间隔物 "与 EDOT 乙烯桥相连。研究人员对这些络合物与 EDOT 的电化学共聚进行了研究,以期制造出含有共价结合金属膦络合物的导电聚合物。虽然在所有实验中都获得了聚合物涂层电极,但 XPS 测量结果表明,在存在顺式-[MCl2(1)2] 的情况下制成的聚合物仅由聚(3,4-亚乙二氧基噻吩)(PEDOT)组成,而在存在顺式-[MCl2(L)2] (L = 4,7)的情况下制成的聚合物则是真正的共聚物,其中含有钯(II)或铂(II)络合物。