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Cover Feature: Alkali Blues: Blue‐Emissive Alkali Metal Pyrrolates (Chem. Eur. J. 26/2019)
Author(s) -
Back Oliver,
Förster Christoph,
Basché Thomas,
Heinze Katja
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201900868
Subject(s) - alkali metal , intramolecular force , chemistry , fluorescence , ligand (biochemistry) , blues , ionic bonding , denticity , monomer , relaxation (psychology) , metal , photochemistry , stereochemistry , ion , polymer , physics , organic chemistry , optics , social psychology , biochemistry , receptor , psychology , acoustics
2‐Iminopyrroles are non‐fluorescent π systems. However, alkali metal bases deprotonate the pyrrole and are chelated by the bidentate ligand. This method rigidifies the π system, restricts intramolecular motions, and consequently disfavors non‐radiative relaxation pathways enabling blue fluorescence in solution. Monomeric, solvated, non‐ionic flurophores are present in solution. More information can be found in the Full Paper by K. Heinze et al. on page 6542.