研究目的
To design and synthesize sulfur atom contained red Ir(III) complexes rapidly at room temperature for efficient organic light-emitting diodes (OLEDs).
研究成果
Three sulfur atom contained red Ir(III) complexes were synthesized rapidly at room temperature in 5 min with high yields. These complexes exhibited distinct PL emissions with high phosphorescence quantum yields up to 83%. When used as dopants in OLEDs, they achieved good performances, with the best device showing a maximum luminance of 30 740 cd m-2 and a maximum external quantum efficiency of 26.10%. This research is beneficial for reducing material production costs and accelerating the industrialization of OLEDs.
研究不足
The study focuses on the synthesis and characterization of sulfur atom contained Ir(III) complexes and their application in OLEDs. The limitations include the specific conditions required for synthesis and the need for further optimization of device performance.
1：Experimental Design and Method Selection:
The study involved the synthesis of three sulfur atom contained Ir(III) complexes at room temperature in 5 min. The photophysical and electroluminescent properties of these complexes were then investigated.
2：Sample Selection and Data Sources:
The complexes were synthesized using diphenylcarbamodithioate (dpdtc), di-p-tolylcarbamodithioate (medtc), and bis(4-(trifluoromethyl)phenyl)carbamodithioate (cf3dtc) as ancillary ligands, with 4-(4-(trifluoromethyl)phenyl)quinazoline (tfmpqz) as the main ligand.
3：List of Experimental Equipment and Materials:
The synthesis was performed using standard laboratory equipment and chemicals, including n-BuLi, CS2, and 2-ethoxyethanol.
4：Experimental Procedures and Operational Workflow:
The ancillary ligands were prepared by reacting corresponding diphenylamine derivatives with n-BuLi and CS2. The Ir(III) complexes were then synthesized by mixing μ-chloro-bridged dimer [(tfmpqz)2Ir(μ-Cl)]2 with the ancillary ligand salts in 2-ethoxyethanol at room temperature for 5 min.
5：The Ir(III) complexes were then synthesized by mixing μ-chloro-bridged dimer [(tfmpqz)2Ir(μ-Cl)]2 with the ancillary ligand salts in 2-ethoxyethanol at room temperature for 5 min.
Data Analysis Methods:
5. Data Analysis Methods: The molecular structures were characterized by nuclear magnetic resonance (NMR), high resolution mass spectrometer (HRMS), and X-ray crystallography. Photophysical properties were measured using UV-visible absorption and photoluminescence spectroscopy.
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