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Pyrazolo[4,3‐h]quinoline Ligand‐Based Iridium(III) Complexes for Electrochemiluminescence
Author(s) -
Hsu ChienWei,
Longhi Elena,
Sinn Stephan,
Hawes Chris S.,
Young David C.,
Kruger Paul E.,
Cola Luisa De
Publication year - 2017
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201700556
Subject(s) - electrochemiluminescence , iridium , acetonitrile , quinoline , ligand (biochemistry) , luminescence , photochemistry , chemistry , conjugated system , combinatorial chemistry , chelation , luminescent measurements , materials science , inorganic chemistry , catalysis , optoelectronics , organic chemistry , electrode , biochemistry , receptor , polymer
Electrochemiluminescence (ECL) based on [Ru(bpy) 3 ] 2+ systems is widely utilized for immunoassays. In order to extend the promising potential of ECL‐based applications, Ir III complexes have recently attracted attention as probes because of their excellent luminescent properties and tunable emission wavelength. Here we describe a series of Ir complexes using a large π‐conjugated ligand and different ancillary chelates. The complexes synthesized have been chemically and spectroscopically characterized and used for ECL measurements with annihilation and co‐reactant methods. One of the Ir III complexes investigated exhibits the brightest, ever reported, ECL efficiency in acetonitrile employing the benzoyl peroxide (BPO) co‐reactant method.