Pyrazolo[4,3-h]quinoline Ligand-Based Iridium(III) Complexes for Electrochemiluminescence

作者：Hsu Chien Wei; Longhi Elena; Sinn Stephan; Hawes Chris S; Young David C; Kruger Paul E; De Cola Luisa^*

来源：Chemistry-An Asian Journal, 2017, 12(13): 1649-1658.

DOI：10.1002/asia.201700556

• annihilation
• benzoyl peroxide
• co-reactant
• electrochemiluminescence
• iridium

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 pi-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.

• 出版日期2017-7-4