Abstract: In the present study, a systematic investigation of photoexcited -fluorine (F) supersensitization was carried out using in situ nuclear magnetic resonance (NMR) technique in combination with a newly designed photoresponsive device, and the validity of the photoresponsive device was confirmed. The reaction device consists of a light source, a light path, a coaxial collimating connector and a solution mixing system, and the combination of nine fluorinated aromatic compounds with six photosensitizers was tested by the standard signal-to-noise (S/N) formula provided by Bruker.  In addition, the device's suitability was further verified by continuously monitoring the photopromoted open-loop reaction. The results show that the photoreactor can be well adapted to the Bruker conventional NMR for photochemical reaction detection and research.

Key words: In situ nuclear magnetic resonance (NMR), fluorine (F) supersensitization, photochemical reactions, in situ reaction monitoring