化学
铱
酰胺
吡啶
光致发光
异喹啉
结晶学
晶体结构
立体化学
药物化学
有机化学
催化作用
物理
光学
作者
Xiaofeng Ma,Xu‐Feng Luo,Zhi‐Ping Yan,Zheng‐Guang Wu,Yue Zhao,You‐Xuan Zheng,Jing‐Lin Zuo
出处
期刊:Organometallics
[American Chemical Society]
日期:2019-09-24
卷期号:38 (19): 3553-3559
被引量:20
标识
DOI:10.1021/acs.organomet.9b00392
摘要
Eight neutral iridium(III) complexes (Ir1–Ir8) containing an electron-withdrawing pentafluorosulfanyl (−SF5) group on cyclometalated ligands with different ancillary ligands were synthesized and investigated. 2-(3/4-(Pentafluorosulfanyl)phenyl)pyrimidine (for Ir1 and Ir2), 1-(3/4-(pentafluorosulfanyl)phenyl)isoquinoline (for Ir3 and Ir4), and 2-(3/4-(pentafluorosulfanyl)phenyl)pyridine (for Ir5–Ir8) were chosen as cyclometalated ligands and 2,2,6,6-tetramethylheptane-3,5-dione (for Ir1–Ir4), tetraphenylimidodiphosphinate (for Ir5 and Ir6), and bis(diphenylphorothioyl)amide (for Ir7 and Ir8) were used as ancillary ligands. The crystal structures of Ir1, Ir3, Ir4, Ir6, and Ir8 also confirmed the identities of these complexes. Complexes Ir1, Ir2, and Ir5–Ir8 exhibit sky blue to green emissions (480–533 nm) with high photoluminescence quantum efficiency yields up to 94.7% in CH2Cl2 solution at room temperature. Complexes Ir3 and Ir4 are red phosphors (λmax = 607 nm, Φ = 76.8% for Ir3 and λmax = 627 nm, Φ = 49.2% for Ir4, respectively). Theoretical calculations were carried out to provide a further study of the orbital distributions and electronic states of eight Ir(III) complexes. Additionally, ion detection studies reveal that Ir2 has the potential for detecting Hg2+ ion.
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