研究目的
Investigating the synthesis and properties of homochiral quadruple-stranded helicates based on chiral bis-β-diketonate ligands for circularly polarized luminescence (CPL) materials.
研究成果
The study successfully synthesized homochiral quadruple-stranded helicates that exhibit strong circularly polarized luminescence with high luminescence quantum yields, providing a new strategy for the development of CPL materials.
研究不足
The study focuses on the synthesis and initial characterization of the helicates. Further studies on their application in devices and the scalability of the synthesis are needed.
1：Experimental Design and Method Selection:
The study involved the synthesis of chiral bis-β-diketonate ligands and their assembly into homochiral quadruple-stranded helicates with lanthanide ions.
2：Sample Selection and Data Sources:
Chiral tartaric acid was used as a starting material for the synthesis of ligands. Lanthanide chloride salts (Eu, Gd, La) were used for complexation.
3：List of Experimental Equipment and Materials:
Instruments included NMR spectrometers, mass spectrometers, UV-Vis and fluorescence spectrophotometers, and X-ray diffractometers.
4：Experimental Procedures and Operational Workflow:
The synthesis involved a four-step reaction sequence, followed by complexation with lanthanide ions.
5：Data Analysis Methods:
Spectroscopic data were analyzed using software provided with the instruments, and structural optimizations were performed using LUMPAC 3.0 software.
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Edinburgh FLS 1000 fluorescence spectrophotometer
FLS 1000
Edinburgh Instruments
Emission and excitation spectra measurement
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Bruker Avance III 400 MHz spectrometer
Avance III
Bruker
Recording NMR spectra
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Bruker maXis mass spectrometer
maXis
Bruker
Electrospray time-of-flight (ESI-TOF) mass spectrometry
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Agilent 5975N
5975N
Agilent
Electron ionization (EI) mass spectrometry
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Perkin-Elmer Lambda 25 spectrometer
Lambda 25
Perkin-Elmer
UV-Vis spectra measurement
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Elementar Vario EL cube analyzer
Vario EL cube
Elementar
Elemental analysis
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Olis DM245 spectrofluorimeter
DM245
Olis
CD and CPL spectra measurement
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Xcalibur, Eos, Gemini diffractometer
Xcalibur, Eos, Gemini
X-ray crystal data collection
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