In situ observation of a stepwise [2 + 2] photocycloaddition process using fluorescence spectroscopy.

ABSTRACT: Using highly sensitive and selective in situ techniques to investigate the dynamics of intermediates formation is key to better understand reaction mechanisms. However, investigating the early stages of solid-state reactions/transformations is still challenging. Here we introduce in situ fluorescence spectroscopy to observe the evolution of intermediates during a two-step [2 + 2] photocycloaddition process in a coordination polymer platform. The structural changes and kinetics of each step under ultraviolet light irradiation versus time are accompanied by the gradual increase-decrease of intensity and blue-shift of the fluorescence spectra from the crystals. Monitoring the fluorescence behavior using a laser scanning confocal microscope can directly visualize the inhomogeneity of the photo

SUBMITTER: Wang MF 

PROVIDER: S-EPMC10682429 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature