title: Green and blue electrochemically generated chemiluminescence from click chemistry--customizable iridium complexes.
abstract: Cationic cyclometalated iridium complexes containing two anionic phenylpyridine (ppy) ligands and the neutral bidentate triazole-pyridine ligand, 2-(1-substituted-1H-1,2,3-triazol-4-yl)pyridine (pytl), were investigated. The complexes display a rich and reversible electrochemical behavior, upon investigations by cyclic voltammetry in strictly aprotic conditions, that couples with excellent emission quantum yields and long lifetimes of the excited states. Therefore, in organic media, all complexes have generated intense green electrochemiluminescence (ECL) through the so-called annihilation procedure and, importantly, a modulation of the emission energy (to blue) has been easily obtained by simple fluorination of the ppy ligand. Finally, taking advantage of their remarkable solubility in water, intense ECL was also obtained from aqueous buffer solutions using the co-reactant method, thus making all the investigated complexes highly promising for their effective use as ECL labels in bioanalytical applications.
authors: Department of Chemistry G. Ciamician, Alma Mater Studiorum-Università degli Studi di Bologna, Via Selmi 2, 40126 Bologna, Italy. simone.zanarini@unibo.it
authors: Simone
authors: S
authors: Zanarini
authors: Marco
authors: M
authors: Felici
authors: Giovanni
authors: G
authors: Valenti
authors: Massimo
authors: M
authors: Marcaccio
authors: Luca
authors: L
authors: Prodi
authors: Sara
authors: S
authors: Bonacchi
authors: Pablo
authors: P
authors: Contreras-Carballada
authors: Rene M
authors: RM
authors: Williams
authors: Martin C
authors: MC
authors: Feiters
authors: Roeland J M
authors: RJ
authors: Nolte
authors: Luisa
authors: L
authors: De Cola
authors: Francesco
authors: F
authors: Paolucci