A New Family of Homoleptic Ir(III) Complexes: Tris-Pyridyl Azolate Derivatives with Dual Phosphorescence

Blue‐emitting complexes: Iridium complexes (see figure) exhibit dual phosphorescence. The blue phosphorescence at room temperature, attributed to TILCT→TLLCT conversion, occurs via a high energy barrier (∼6.9 kcal mol−1) resulting from large‐amplitude motions, such as partial twisting of the chelate...

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Bibliographic Details
Published in:Chemphyschem 2006-11, Vol.7 (11), p.2294-2297
Main Authors: Yeh, Yu-Shan, Cheng, Yi-Ming, Chou, Pi-Tai, Lee, Gene-Hsiang, Yang, Cheng-Han, Chi, Yun, Shu, Ching-Fong, Wang, Chih-Hsiang
Format: Article
Language:English
Subjects:
Atomic and molecular physics
charge transfer
density functional calculations
Exact sciences and technology
Fluorescence and phosphorescence spectra
Fluorescence and phosphorescence
radiationless transitions, quenching (intersystem crossing, internal conversion)
iridium
Molecular properties and interactions with photons
osmium
Physics
UV/Vis spectroscopy
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Summary:Blue‐emitting complexes: Iridium complexes (see figure) exhibit dual phosphorescence. The blue phosphorescence at room temperature, attributed to TILCT→TLLCT conversion, occurs via a high energy barrier (∼6.9 kcal mol−1) resulting from large‐amplitude motions, such as partial twisting of the chelate groups which flip the orbital configuration and consequently results in dual phosphorescence.
ISSN:1439-4235
1439-7641
DOI:10.1002/cphc.200600461