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Download fileIn Situ Visualization of Reversible Diels–Alder Reactions with Self-Reporting Aggregation-Induced Emission Luminogens
journal contribution
posted on 07.01.2022, 13:41 authored by Danning Hu, Liucheng Mao, Mengshi Wang, Hongye Huang, Renjian Hu, Haijun Ma, Jinying Yuan, Yen WeiThe
dynamic reversible Diels–Alder (DA) reactions play essential
roles in both academic and applied fields. Currently, in situ visualization
and direct monitoring of the formation and cleavage of covalent bonds
in DA reactions are hampered by finite compatibility and expensive
precise instruments, especially limited in solid reactions. We herein
report a fluorescence system capable of in situ visualization by naked
eyes and monitoring DA/retro-DA reactions. With the fluorescence quenching
effect, the synthesized TPEMI could work as an innovative self-indicator
for both DA termination and retro-DA occurrence. The fluorescence
increases during DA reactions, and the mechanism is investigated to
establish qualitative and quantitative relations. Besides rapid screening
of reaction conditions and monitoring of DA exchange processes, the
TPEMI fluorescence system can visualize heterogeneous and solid-state
reactions with the AIE character. The TPEMI platform is expected to
offer novel insights into reversible DA processes and dynamic covalent
chemistry.
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offer novel insightsinduced emission luminogensexpensive precise instrumentsbesides rapid screeningfluorescence system capablefluorescence quenching effectdynamic covalent chemistrytpemi fluorescence systemreversible da processesda exchange processesfluorescence increasestpemi platformcovalent bondsda terminationda reactionsda occurrencevisualize heterogeneousstate reactionssitu visualizationreporting aggregationreaction conditionsquantitative relationsnaked eyesherein reportfinite compatibilityestablish qualitativeespecially limitedapplied fieldsaie character