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Stabilization of High Oxidation State Upconversion Nanoparticles by N‐Heterocyclic Carbenes
Author(s) -
Möller Nadja,
Rühling Andreas,
Lamping Sebastian,
Hellwig Tim,
Fallnich Carsten,
Ravoo Bart Jan,
Glorius Frank
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201611506
Subject(s) - nanoparticle , carbene , photon upconversion , photochemistry , molecule , ligand (biochemistry) , oxidation state , chemistry , combinatorial chemistry , materials science , metal , nanotechnology , catalysis , organic chemistry , ion , biochemistry , receptor
The stabilization of high oxidation state nanoparticles by N‐heterocyclic carbenes is reported. Such nanoparticles represent an important subset in the field of nanoparticles, with different and more challenging requirements for suitable ligands compared to elemental metal nanoparticles. N‐Heterocyclic carbene coated NaYF 4 :Yb,Tm upconversion nanoparticles were synthesized by a ligand‐exchange reaction from a well‐defined precursor. This new photoactive material was characterized in detail and employed in the activation of photoresponsive molecules by low‐intensity near‐infrared light ( λ =980 nm).