Neutral and Dianionic Ru(II) Bathophenanthrolinedisulfonate Complexes: A Route To Enhance Electrochemiluminescence Performance in Aqueous Media

被引：34

作者：

Della Ciana, Leopoldo ^{[1
]}

Zanarini, Simone ^{[2
]}

Perciaccante, Rossana ^{[1
]}

Marzocchi, Ettore ^{[1
]}

Valenti, Giovanni ^{[2
]}

机构：

[1] Cyanagen Srl, I-40138 Bologna, Italy

[2] Univ Bologna, Dipartimento Chim G Ciamician, I-40126 Bologna, Italy

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 08期

关键词：

CYCLOMETALATED IRIDIUM(III) COMPLEXES; LUMINESCENT METAL-COMPLEXES; EXCITED-STATES; CHEMILUMINESCENCE; LIGANDS; ELECTROCHEMISTRY; RUTHENIUM(II); ECL;

D O I：

10.1021/jp910596z

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the strong enhancement of ECL intensity and duration in neutral and dianionic Ru(II) complexes hearing mixed 2,2'-bipyridine (bpy) and bathophenanthrolinedisulfonate (BPS) ligands. In aqueous conditions, using the tripropylamine-assisted method and applying a constant potential, we observed for Ru(BPS)(bpy)(2) a remarkable 26-fold ECL integrated intensity increase with respect to Ru(bpy)(3)(2+). The results herein obtained reveal that the cause of reduced ECL intensity of [Ru(BPS)(3)](4-) and [Ru(BPS)(2)(bpy)](2-) can be ascribed to surface effects related to the interaction of the oxidized complex with the electrode. The expected reduction or absence of electrostatic interactions with biomolecules, together with the strongly enhanced performance, makes the zwitterionic Ru(BPS)(bpy)(2) complex a highly promising candidate for the development of very efficient ECL labels For ultrasensitive bioassays and functional imaging applications.

引用

页码：3653 / 3658

页数：6

共 27 条

[1]

[Anonymous], **DROPPED REF**

[2] Influence of substituents on the energy and nature of the lowest excited states of heteroleptic phosphorescent Ir(III) complexes: A joint theoretical and experimental study [J].