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Updated: Feb 25, 2026

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
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七个成员BF的合成和电聚合 染色体:三胺功能化的BOPYRENPY具有电色特性

Edwin J Gonzalez Lopez1, Jhair C Leon Jaramillo2, Maribel López3

  • 1School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States.

The Journal of organic chemistry
|February 24, 2026
PubMed
概括

研究人员开发了用于电聚合的新二化物材料. 这些新型BOPYRENPY衍生物形成稳定的电色聚合物薄膜,具有快速切换和高光学对比度.

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Bromination and chlorination of aromatic rings by electrophilic aromatic substitution reactions are easily achieved, but fluorination and iodination are difficult to achieve. Fluorine is so reactive that its reaction with benzene is difficult to control, resulting in poor yields of monofluoroaromatic products. To address this, Selectfluor reagent is used as a fluorine source in which a fluorine atom is bonded to a positively charged nitrogen.
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Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
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The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
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