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| 两种黄绿光铱配合物的合成及光物理性质研究 |
| Synthesis and photophysical properties of two yellow-green iridium complexes |
| Received:May 18, 2021 |
| DOI： |
| 中文关键词: 铱配合物 苯并噻唑 光物理性质 密度泛函理论 |
| 英文关键词: iridium complexes benzothiazole photophysical properties DFT |
| 基金项目:国家自然科学基金(22061016)；海南省自然科学基金(220RC592)；海南师范大学研究生创新科研项目(hsyx2021-75) |
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| 中文摘要: |
| 以2-苯基-6-(三氟甲基)-苯并噻唑和5,7-二氟-2-苯基苯并噻唑为主配体，分别与辅助配体三苯基膦合成了两种新型的环金属铱配合物(Ir1和Ir2)。用核磁共振氢谱(1H-NMR)和质谱(MS)进行表征并确认其结构。用紫外吸收光谱以及荧光发射光谱研究了它们的光物理性质，Ir1和Ir2的最大发射波长分别为548和546 nm，发黄绿光，相对量子产率为41.1%和69.2%，荧光寿命分别为0.65和0.66 μs。密度泛函理论(DFT)计算表明紫外最大吸收峰和荧光发射峰均归因于MLCT/ILCT跃迁。 |
| 英文摘要: |
| Two novel cyclometallic iridium complexes (Ir1 and Ir2) were synthesized using 2-phenyl-6- (trifluoromethyl)-benzo[d]thiazole/5,7-difluoro-2-phenylbenzo[d]thiazole as main ligands and triphenyl- phosphine as an auxiliary ligand. Their chemical structures were characterized by nuclear magnetic resonance hydrogen spectrum (1H-NMR) and mass spectrometry (MS). Their photophysical properties were studied by ultraviolet absorption spectroscopy and fluorescence emission spectroscopy. Complexes Ir1 and Ir2 emit yellow-green photoluminescence, and the maximum emission wavelengths are 548 and 546 nm, respectively. Their relative quantum yields are 41.1/69.2% and fluorescence lifetimes are 0.65/0.66 μs, respectively. Density functional theory (DFT) calculations indicated that maximal absorption wavelengths and fluorescence emission peaks were attributed to MLCT/ILCT transitions. |
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