Peripheral halo-functionalization in [Cu(N^N)(P^P)]<sup>+</sup> emitters: influence on the performances of light-emitting electrochemical cells
作者:Fabian Brunner、Laura Martínez-Sarti、Sarah Keller、Antonio Pertegás、Alessandro Prescimone、Edwin C. Constable、Henk J. Bolink、Catherine E. Housecroft
DOI:10.1039/c6dt02665f
日期:——
heteroleptic [Cu(N^N)(P^P)][PF6] complexes is described in which P^P = bis(2-(diphenylphosphino)phenyl)ether (POP) or 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (xantphos) and N^N = 4,4′-diphenyl-6,6′-dimethyl-2,2′-bipyridine substituted in the 4-position of the phenyl groups with atom X (N^N = 1 has X = F, 2 has X = Cl, 3 has X = Br, 4 has X = I; the benchmark N^N ligand with X = H is 5). These complexes
描述了一系列杂合[Cu(N ^ N)(P ^ P)] [PF 6 ]配合物,其中P ^ P =双(2-(二苯基膦基)苯基)醚(POP)或4,5-双( (二苯基膦基)-9,9-二甲基an吨(xantphos)和N ^ N = 4,4'-二苯基-6,6'-二甲基-2,2'-联吡啶在苯基的4位上被原子X( N ^ N = 1有X = F,2具有X = Cl,3具有X = Br,4具有X = I; X = H的基准N ^ N配体为5)。这些配合物已通过多核NMR光谱,质谱,元素分析和循环伏安法进行了表征。还报道了代表性的单晶结构。该溶液的吸收光谱的特征在于高能量带(从配体为中心的过渡产生的)上从X = H将X = I被红移,并且具有广泛的金属到配体的电荷传输带λ最大值在范围387–395 nm。十种络合物是溶液中的黄色发射器,固态时是黄色或橙黄色的发射器。对于给定的N ^ N配体,溶液的光致发光(PL)光谱显示从[Cu(N