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Assembly of Near‐Infrared Luminescent Lanthanide Host(Host–Guest) Complexes With a Metallacrown Sandwich Motif
Author(s) -
Jankolovits Joseph,
Andolina Christopher M.,
Kampf Jeff W.,
Raymond Kenneth N.,
Pecoraro Vincent L.
Publication year - 2011
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.201103851
Subject(s) - luminescence , lanthanide , quantum yield , methanol , ion , chemistry , infrared , host (biology) , crystallography , materials science , optoelectronics , organic chemistry , optics , physics , biology , ecology , fluorescence
Oscillators omitted : A self‐assembled inclusion complex between a Ln III [12‐metallacrown‐4] 2 3+ sandwich motif (green and bronze) and a [24‐metallacrown‐8] (purple) is stable in methanol. The Yb III complex has a large quantum yield (0.89 %) and luminescent lifetime (14 μs) in methanol, which are attributed to the exclusion of high‐energy oscillators from within 6.7 Å of the emitting Yb III ion by the metallacrown topology.