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| 两种嘧啶基噻吩类磷光铱配合物的合成及表征 |
| Synthesis and characterization of two pyrimidinyl thiophene-based phosphorescent iridium complexes |
| Received:March 01, 2022 |
| DOI： |
| 中文关键词: 铱配合物 嘧啶基噻吩 二(二苯基磷酰)亚胺 晶体结构 光物理性质 |
| 英文关键词: irdium(III) complex pyrimidinyl thiophene tetraphenylimidodiphosphinate cystal structure photophysical properties |
| 基金项目:国家自然科学基金(22061016, 22261016)、海南省自然科学基金(220RC592, 222MS058) |
| Author Name | Affiliation | E-mail | | CHEN Cheng-shan | College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China | 1569165028@qq.com | | ZHANG Xiao-bin | College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China | | | DOU Shao-bin | College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China | | | CHEN Meng-sen | College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China | | | NIU Zhi-gang | College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China | | | LI Gao-nan | College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China | ligaonan2008@163.com |
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| 中文摘要: |
| 以2-嘧啶基噻吩(pymbt，L1)和2-嘧啶基苯并噻吩(pymbtp，L2)作为环金属化主配体，二(二苯基磷酰)亚胺(Htpip)作为O^O型辅助配体，合成了两种新型磷光金属铱配合物(pymbt)2Ir(tpip) (Ir1)和(pymbtp)2Ir(tpip) (Ir2)。通过核磁共振氢谱、质谱和元素分析对其进行了结构表征，用紫外-可见吸收光谱和荧光发射光谱进行了光物理性质的研究。结果表明，铱配合物Ir1和Ir2在溶液中的最大发射峰分别为563 nm和619 nm，为橙黄光和红光。在无水无氧二氯甲烷溶液中相对量子效率分别为6.3%和10.1%，磷光寿命为0.50 ms和0.63 ms。同时采用含时密度泛函理论(TDDFT)对配合物Ir1和Ir2的最低能量电子跃迁进行了计算，结果与实验测得的相应光谱数据对应的趋势相符。 |
| 英文摘要: |
| Using 2-pyrimidinyl thiophene (pymbt, L1), 2-pyrimidinyl benzothiophene (pymbtp, L2) as the cyclometalated main ligands and tetraphenylimidodiphosphinate (Htpip) as the O^O ancillary ligand, two novel phosphorescent iridium complexes (pymbt)2Ir(tpip) (Ir1) and (pymbtp)2Ir(tpip) (Ir2) were synthesized. Their structures were characterized by 1H-NMR, MS and elemental analysis method. Their photophysical properties were studied by UV-Vis absorption and photoluminescence spectra. The results show that the maximum emission peaks of iridium(III) complexes Ir1 and Ir2 in CH2Cl2 solution are 563 nm and 619 nm, respectively, corresponding to orange and red light emission. In anhydrous and oxygen-free CH2Cl2 solution, the relative quantum efficiencies are 6.3% and 10.1%, respectively, and the corresponding phosphorescence lifetime is 0.50ms and 0.63 ms. The lowest energy electronic transitions of complexes Ir1 and Ir2 were calculated by time-dependent density functional theory (TDDFT), and the results are consistent with the corresponding trend in the experimental spectra. |
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