Department of Chemistry, Missouri State University, Springfield, Missouri 65897, USA.
Dalton Trans. 2010 Feb 14;39(6):1586-90. doi: 10.1039/b912877h. Epub 2009 Dec 4.
The spectroscopy, electrochemistry and electrogenerated chemiluminescence (ECL) of five osmium(ii) polypyridyl systems containing either phosphine or arsine chelating ligands are reported. ECL is generated in acetonitrile and mixed CH(3)CN-H(2)O (50 : 50 v/v) solutions with tri-n-propylamine (TPrA) as an oxidative-reductive coreactant. ECL efficiencies (phi(ECL) = photons emitted per redox event) between 0.15 and 8.43 are obtained using Ru(bpy)(3)(2+) (bpy = 2,2'-bipyridine) as a relative standard (phi(ECL) = 1). The ECL efficiency is dependent on both the nature of the ligands and the solvent media. The ECL spectra are identical to photoluminescence spectra indicating formation of the same excited states in both ECL and PL.
本文报道了五种含膦或胂螯合配体的二价锇（ii）多吡啶体系的光谱、电化学和电致化学发光（ECL）性质。在乙腈和混合 CH(3)CN-H(2)O（50:50v/v）溶液中，以三正丙胺（TPrA）作为氧化还原共反应物，可产生 ECL。使用 Ru(bpy)(3)(2+)（bpy=2,2'-联吡啶）作为相对标准（phi(ECL)=1），可获得 0.15 至 8.43 之间的 ECL 效率（phi(ECL)=每氧化还原事件发射的光子数）。ECL 效率取决于配体的性质和溶剂介质。ECL 光谱与光致发光光谱相同，表明在 ECL 和 PL 中形成相同的激发态。
