Swanick Kalen N, Sandroni Martina, Ding Zhifeng, Zysman-Colman Eli
Department of Chemistry, The University of Western Ontario, 1151 Richmond Street, London, Ontario, N6A 5B7 (Canada).
Chemistry. 2015 May 11;21(20):7435-40. doi: 10.1002/chem.201406533. Epub 2015 Mar 3.
Electrochemiluminescence (ECL) and electrochemistry are reported for a heterometallic soft salt, [Ru(dtbubpy)3 ][Ir(ppy)2 (CN)2 ]2 ([Ir][Ru][Ir]), consisting of a 2:1 ratio of complementary charged Ru and Ir complexes possessing two different emission colors. The Ru and Ir moieties in the [Ir][Ru][Ir] greatly reduce the energy required to produce ECL. Though ECL intensity in the annihilation path was enhanced 18× relative to that of Ru(bpy)3 , ECL in the co-reactant path with tri-n-propylamine was enhanced a further 4×. Spooling spectroscopy gives insight into ECL mechanisms: the unique light emission at 634 nm is due to the Ru * excited state and no Ir * was generated in either route. Overall, the soft salt system is anticipated to be attractive and suitable for the development of efficient and low-energy-cost ECL detection systems.
报道了一种异金属软盐[Ru(dtbubpy)3 ][Ir(ppy)2 (CN)2 ]2（[Ir][Ru][Ir]）的电化学发光（ECL）和电化学性质，该软盐由具有两种不同发射颜色的带相反电荷的Ru和Ir配合物以2:1的比例组成。[Ir][Ru][Ir]中的Ru和Ir部分大大降低了产生ECL所需的能量。尽管湮灭路径中的ECL强度相对于Ru(bpy)3 提高了18倍，但与三正丙胺的共反应剂路径中的ECL强度又进一步提高了4倍。盘绕光谱有助于深入了解ECL机制：634 nm处的独特发光归因于Ru *激发态，并且在任何一条路径中都没有产生Ir *。总体而言，预计该软盐体系具有吸引力，适合开发高效且低能量成本的ECL检测系统。
