研究目的
To develop a versatile molecular scaffold based on cyano-substituted stilbene for facile synthesis of fluorescent π-conjugated molecules with enhanced properties.
研究成果
The scaffold allows facile synthesis of various π-extended cyano-substituted stilbene derivatives with fluorescent properties, useful for applications in materials science such as AIE-active materials and polymer synthesis. Future work will focus on exploring these applications further.
研究不足
The paper does not explicitly discuss limitations, but potential areas could include the scope of reactions applicable to the scaffold, stability of the compounds, or scalability of the synthesis methods.
1：Experimental Design and Method Selection:
The study utilized Knoevenagel condensation, hydrolysis, Wittig reaction, aldol condensation, imination, and Suzuki-Miyaura cross-coupling reactions to modify the scaffold.
2：Sample Selection and Data Sources:
Compounds were synthesized from commercially available chemicals such as 4-bromophenylacetonitrile and terephthalaldehyde mono(diethyl acetal).
3：List of Experimental Equipment and Materials:
Included NMR spectrometer (JEOL EX-300), mass spectrometer (Bruker microTOF II), UV-vis spectrometer (Ocean Optics USB4000-XR1), fluorescence spectrometer (Ocean Optics USB4000), and quantum yield measurement system (Hamamatsu Photonics C9920-03). Chemicals were sourced from Wako, TCI, Aldrich, Kanto, etc.
4：3). Chemicals were sourced from Wako, TCI, Aldrich, Kanto, etc. Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: Detailed step-by-step synthesis procedures for compounds pre3, 3, and derivatives 4-12, involving reactions under specific conditions (e.g., temperature, time, solvents) and purification methods like filtration and chromatography.
5：Data Analysis Methods:
Photophysical properties (absorption and fluorescence spectra, quantum yields) were measured and analyzed using the specified equipment.
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NMR Spectrometer
EX-300
JEOL
Recording 1H and 13C nuclear magnetic resonance spectra for compound characterization.
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Mass Spectrometer
microTOF II
Bruker
Performing mass spectral analysis for compound identification.
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UV-vis Spectrometer
USB4000-XR1
Ocean Optics
Obtaining UV-vis absorption spectra of compounds.
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Fluorescence Spectrometer
USB4000
Ocean Optics
Obtaining fluorescence spectra of compounds.
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Quantum Yield Measurement System
C9920-03
Hamamatsu Photonics
Measuring absolute fluorescence quantum yields of compounds.
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Light Source for UV-vis
DH2000-BAL
Ocean Optics
Tungsten halogen light source for UV-vis measurements.
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Light Source for Fluorescence
PX-2
Ocean Optics
Pulsed xenon light source for fluorescence measurements.
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Palladium on Carbon
10% Pd, 55% wet
TCI
Catalyst for Suzuki-Miyaura cross-coupling reactions.
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