研究目的
Synthesis of heterodiazocines and investigation of their photochromic properties, specifically trans to cis switching within the bio-optical window.
研究成果
The developed synthetic route enables efficient trans to cis switching of heterodiazocines with far-red light, showing no decomposition over ten cycles. This advances the field of photochromic compounds for molecular switches and motors, with suggestions for future work on enhancing yields and exploring broader applications.
研究不足
The synthesis yields are moderate to low (e.g., 9-93%), and the half-lives vary significantly between compounds, which may limit practical applications. Potential optimizations could involve improving yield and stability.
1：Experimental Design and Method Selection:
The study involves the synthesis of heterodiazocines using various chemical reactions, including reduction, substitution, and cyclization under specific conditions such as ultrasound, ball milling, and use of catalysts like Pb and MoO2Cl
2：The photochromic switching is tested with irradiation at 650 nm light. Sample Selection and Data Sources:
Compounds are synthesized from precursors like Br and NO2-containing molecules, with yields reported for each step.
3：List of Experimental Equipment and Materials:
Includes chemicals like NaBH4, K3PO4, TBAB, Pb, Et3N, HCO2H, MeOH, H2O, Ph3P, MoO2Cl2, and solvents such as THF. Equipment involves ultrasound apparatus and ball mill.
4：Experimental Procedures and Operational Workflow:
Steps include reactions at specified temperatures and times, pH adjustment, and irradiation experiments.
5：Data Analysis Methods:
Yields are calculated, and photochromic properties like half-lives and cycle stability are measured.
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