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Front Cover: Photophysical Properties of 4‐Dicyanomethylene‐2‐methyl‐6‐( p ‐dimethylamino‐styryl)‐4 H ‐pyran Revisited: Fluorescence versus Photoisomerization (Chem. Eur. J. 63/2020)
Author(s) -
Casimiro Lorenzo,
Maisonneuve Stéphane,
Retailleau Pascal,
Silvi Serena,
Xie Juan,
Métivier Rémi
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202004201
Subject(s) - photoisomerization , isomerization , fluorescence , photochemistry , conformational isomerism , fluorophore , pyran , chemistry , molecule , fluorescence spectroscopy , stereochemistry , physics , organic chemistry , optics , catalysis
Known as a bright and photostable fluorophore , widely employed in chemistry, biology and physics, the DCM molecule and its photophysical properties remain mysterious. Its multiple isomers and conformers, especially the light‐induced E–Z isomerization, have a great influence on the DCM behavior. A complete investigation, involving structure characterization, HPLC separation, steady‐state and time‐resolved spectroscopy and DFT calculations, deciphers the role of the solvent and irradiation wavelength on the fluorescence photoswitching capability of the DCM molecule. More information can be found in the Full Paper by J. Xie, R. Métivier, et al. on page 14341.