研究目的
Investigating the synthesis and properties of tetraphenylethylene (TPE)-based aryleneethynylene polymers with amino or nitro groups, focusing on their aggregation-induced emission (AIE), pH response, and solvatochromic behavior, as well as their application in detecting nitroaromatics in water.
研究成果
The synthesized TPE-based polymers exhibit unique optical properties, including AIE, pH response, and solvatochromic behavior. The amino-functionalized polymers are effective in detecting nitroaromatics in water, with potential applications in environmental monitoring and security.
研究不足
The study is limited to the specific TPE-based polymers synthesized and their properties under the tested conditions. The application in detecting nitroaromatics is demonstrated in water, and the performance in other solvents or real-world samples is not explored.
1：Experimental Design and Method Selection:
The study involved the synthesis of four TPE-based polymers with amino or nitro groups using McMurry coupling and Sonogashira coupling. The optical properties, including AIE, pH response, and solvatochromic behavior, were investigated.
2：Sample Selection and Data Sources:
The polymers were synthesized from TPE monomers functionalized with diethylamino- or nitro-groups. The emission spectra and quantum yields were measured in different solvents and pH buffers.
3：List of Experimental Equipment and Materials:
Scanning electron microscopy (SEM) was used to observe the morphology of the polymers. Quantum chemical calculations (DFT/B3LYP/6-311G) were performed to investigate the electronic structure.
4：Experimental Procedures and Operational Workflow:
The polymers were synthesized, and their optical properties were characterized. The pH response and solvatochromic behavior were studied. The polymers' ability to detect nitroaromatics was tested.
5：Data Analysis Methods:
The fluorescence quenching efficiencies were analyzed using Stern–Volmer constants. Linear discriminant analysis (LDA) was used to discriminate between different nitroaromatics.
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