研究目的
Investigating the synthesis and optoelectronic properties of monofluorinated and difluorinated dithienyl-DPP derivatives for organic electronics applications.
研究成果
Fluorinated dithienyl-DPP compounds were successfully synthesized, and their optoelectronic properties were preliminarily investigated. Fluorination at the acceptor moiety led to a significant bathochromic shift in absorption, and introduction of fluorine atoms decreased both HOMO and LUMO energy levels. Future work will focus on improving polymer solubility for device applications.
研究不足
The solubility of fluorinated polymers decreased compared to nonfluorinated analogues, potentially limiting their application in optoelectronic devices. Ongoing work aims to improve solubility.
1：Experimental Design and Method Selection:
A stepwise synthesis strategy was employed to prepare monofluorinated and difluorinated dithienyl-DPP. The synthesis involved condensation reactions and N-alkylation steps.
2：Sample Selection and Data Sources:
The study focused on synthesizing and characterizing new fluorinated dithienyl-DPP compounds and polymers.
3：List of Experimental Equipment and Materials:
Instruments included Bruker AV400 and AV500 spectrometers for NMR, Shimadzu AXIMA-CFR plus time-of-flight mass spectrometer for MALDI-TOF, and Rigaku D/Max2550V/PC or D/Max2200V/PC X-ray Powder Diffractometer for XRD.
4：Experimental Procedures and Operational Workflow:
Detailed synthetic routes for monofluorinated and difluorinated dithienyl-DPP, followed by polymerization and characterization.
5：Data Analysis Methods:
UV-Vis spectroscopy, cyclic voltammetry, and GPC were used for characterization.
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