Synthetic Control of Excited-State Properties in Cyclometalated Ir(III) Complexes Using Ancillary Ligands
作者:Jian Li、Peter I. Djurovich、Bert D. Alleyne、Muhammed Yousufuddin、Nam N. Ho、J. Christopher Thomas、Jonas C. Peters、Robert Bau、Mark E. Thompson
DOI:10.1021/ic048599h
日期:2005.3.21
The synthesis and photophysical characterization of a series of (N,C(2')-(2-para-tolylpyridyl))2 Ir(LL') [(tpy)2 Ir(LL')] (LL' = 2,4-pentanedionato (acac), bis(pyrazolyl)borate ligands and their analogues, diphosphine chelates and tert-butylisocyanide (CN-t-Bu)) are reported. A smaller series of [(dfppy)2 Ir(LL')] (dfppy = N,C(2')-2-(4',6'-difluorophenyl)pyridyl) complexes were also examined along
一系列(N,C(2')-(2-对甲苯基吡啶基))2 Ir(LL')[(tpy)2 Ir(LL')](LL'= 2,4报道了戊二酮(acac),双(吡唑基)硼酸酯配体及其类似物,二膦螯合物和叔丁基异氰化物(CN-t-Bu)。还检查了较小系列的[(dfppy)2 Ir(LL')](dfppy = N,C(2')-2-(4',6'-二氟苯基)吡啶基)配合物以及两个先前报道的化合物, (ppy)2 Ir(CN)2-和(ppy)2 Ir(NCS)2-(ppy = N,C(2′)-2-苯基吡啶基)。(tpy)2 Ir(PPh2CH2)2 BPh2和[(tpy)2 Ir(CN-t-Bu)2](CF3SO3)络合物的结构已通过X射线晶体学表征。(tpy)2 Ir(CN-t-Bu)2+(2.047(5)和2.072(5)A)和(tpy)2 Ir(PPh2CH2)2 BPh2(2.047( 9)和2。057(9)A)比(tpy)2