Yttrium and lanthanide complexes of β-dialdehydes: synthesis, characterization and luminescence of coordination compounds with the conjugate base of nitromalonaldehyde
作者:Marco Bortoluzzi、Elena Bianchin、Stefania Roppa、Valerio Bertolasi、Francesco Enrichi
DOI:10.1039/c4dt00643g
日期:——
Coordination compounds having formulae [AsPh4][Ln(NMA)4] (1Ln), Ln(NMA)3(tppo)2 (2Ln), Ln(NMA)3(bipyO2) (3Ln), Ln(NMA)3(phen) (4Ln) and Ln(NMA)3(terpy) (5Ln) (Ln = Y and some lanthanides; NMA = conjugate base of nitromalonaldehyde; tppo = triphenylphosphine oxide; bipyO2 = 2,2â²-bipyridine-N,Nâ²-dioxide; phen = 1,10-phenanthroline; terpy = 2,2â²:6â²,2â²â²-terpyridine) were synthesized and characterized and X-ray diffraction data were collected for [AsPh4][Y(NMA)4] (1Y). The neutral europium derivatives showed appreciable luminescence in the solid state upon excitation with UV light and photoluminescence measurements were carried out. These compounds were used as dopants for the preparation of luminescent poly(methyl methacrylate). Luminescent polyvinylpyrrolidone samples were obtained by reacting the pure polymer with water solutions containing NMA and trivalent europium ions.
具有式 [AsPh4][Ln(NMA)4] (1Ln)、Ln(NMA)3(tppo)2 (2Ln)、Ln(NMA)3(bipyO2) (3Ln)、Ln(NMA)3(phen) 的配位化合物) (4Ln) 和 Ln(NMA)3(terpy) (5Ln) (Ln = Y 和一些镧系元素;NMA = 硝基丙二醛的共轭碱;tppo = 三苯基氧化膦;bipyO2 = 2,2â²-联吡啶-N,Nâ合成并表征了[AsPh4][Y;phen = 1,10-菲咯啉;terpy = 2,2-:6-,2-三联吡啶) (NMA)4] (1Y)。中性铕衍生物在紫外光激发下在固态下显示出明显的发光,并进行了光致发光测量。这些化合物用作制备发光聚(甲基丙烯酸甲酯)的掺杂剂。通过将纯聚合物与含有 NMA 和三价铕离子的水溶液反应获得发光聚乙烯吡咯烷酮样品。