Luminescent Complexes of Iridium(III) Containing N∧C∧N-Coordinating Terdentate Ligands
作者:Andrew J. Wilkinson、Horst Puschmann、Judith A. K. Howard、Clive E. Foster、J. A. Gareth Williams
DOI:10.1021/ic061172l
日期:2006.10.1
a blue-shift in the emission and to an increase in the quantum yield (lambda(max) = 547 nm, phi = 0.41 in degassed CH(3)CN at 295 K) compared to the nonfluorinated parent complex (lambda(max) = 585 nm, phi = 0.21), as well as to a stabilization of the compound with respect to photodissociation through cleavage of mutually trans Ir-C bonds. [Ir(dpyx-N/C/N)(ppy-C,N)Cl] is an exceptionally bright emitter:
据报道,一个双齿铱(III)配合物家族含有环金属化的,N / C [楔] N-配位的1,3-二(2-吡啶基)苯衍生物。通过在配体的C4和C6位置阻断竞争性环金属化,有利于这种配位模式。因此,1,3-二(2-吡啶基)-4,6-二甲基苯(dpyxH)与IrCl3 x 3H2O反应生成二氯桥联二聚体[Ir(dpyx-N,C,N)Cl(mu-Cl)] 2 ,1.该二聚体被DMSO裂解,得到[Ir(dpyx)(DMSO)Cl2],此处报道了其X射线晶体结构,证实了dpyx的N / C / N配位模式。二聚体1也可以被多种其他配体切割,以产生新种类的单核复合物。这些包括通过反应形式为[Ir(N / C / N)(C / N / C)]和[Ir(N / C / N)(C / N / O)]形式的电荷中性双齿复合物1个具有C / N / C配位体的配体(例如,2,6-二苯基吡啶及其衍生物)和C / N /