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Cover Feature: NIR‐Emissive Chromium(0), Molybdenum(0), and Tungsten(0) Complexes in the Solid State at Room Temperature (Chem. Eur. J. 51/2021)
Author(s) -
Boden Pit,
Di MartinoFumo Patrick,
Bens Tobias,
Steiger Sophie,
Albold Uta,
NiednerSchatteburg Gereon,
Gerhards Markus,
Sarkar Biprajit
Publication year - 2021
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.202102876
Subject(s) - luminescence , chromium , excited state , molybdenum , photochemistry , quantum yield , carbene , tungsten , iridium , ligand (biochemistry) , chemistry , materials science , denticity , fluorescence , metal , inorganic chemistry , optoelectronics , atomic physics , physics , organic chemistry , biochemistry , receptor , quantum mechanics , catalysis
This work presents emissive Cr(0), Mo(0) and W(0) complexes that contain a bidentate pyridyl‐mesoionic carbene ligand and CO coligands. These systems exhibit dual visible and NIRII emission at room temperature and represent a milestone in the design of noble‐metal‐free NIR luminophores. The emissive excited states were characterized by luminescence lifetime investigations and step‐scan FTIR spectroscopy, supported by density functional theory. The NIR quantum yield increases from Cr(0) via Mo(0) to W(0), reaching a very high value at room temperature. More information can be found in the Communication by M. Gerhards, B. Sarkar et al. (DOI: 10.1002/chem.202102208).