两种新型铱（III）配合物的合成与性质研究

摘要

分别以2-苯基吡啶(ppy)为第一配体，以1-苯基-1,3-丁二酮(phbd)，1-苯基-3-甲基-4-苯甲酰基-吡唑啉酮-5(pmbp)为第二配体合成了两个新的铱配合物Ir(ppy)2(pmbp)、Ir(ppy)2(phbd)，通过红外光谱、元素分析和核磁共振对其化学组成进行了结构表征，表征结果与理论吻合良好；配合物在紫外吸收光谱图上的290~310 nm处出现了强的配体自旋允许的单重态π-π*跃迁吸收峰，在400~460 nm处出现了配合物分子内金属铱到配体的单重态和三重态电荷跃迁吸收峰(1MLCT和3MLCT)；同时配合物Ir(ppy)2(pmbp)、Ir(ppy)2(phbd)在荧光光谱上522、518 nm处出现了强的绿光发射。%Two new iridium complexes Ir(ppy)2(pmbp),Ir(ppy)2(phbd) were synthesized and characterized by IR spectra, elemental analysis and1HNMR (ppy=2-phenylpyridine, pmbp=1-phenyl-3-methyl-4- benzoyl-2-pyrazolin-5-one, phbd=1-phenyl-1,3-butanedione). Their UV-vis absorption spectrogram are at 290~310 nm, which is ligand spin allowed singlet state transition absorption peak, and the absorption at 400~460 nm is metal iridium to ligands singlet and triplet state charge transition absorption peak (1MLCT and3MLCT). Their fluorescence emission peaks are at 522 and 518 nm, which gives strong green emission.