Electrogenerated chemiluminescence.: 70.: The application of ECL to determine electrode potentials of tri-n-propylamine, its radical cation, and intermediate free radical in MeCN/benzene solutions

被引：136

作者：

Lai, RY ^{[1
]}

Bard, AJ ^{[1
]}

机构：

[1] Univ Texas, Dept Chem & Biochem, Austin, TX 78712 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2003年 / 107卷 / 18期

关键词：

D O I：

10.1021/jp026743j

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 here electrogenerated chemiluminescence (ECL) observed upon oxidation of aromatic hydrocarbons with different potentials for oxidation to the radical cations (D+.) and tri-n-propylamine (TPrA) in MeCN/benzene solutions. In this system, with TPrA as a coreactant, ECL is generated by reaction of D+. with the free radical intermediate produced upon oxidation of TPrA. ECL was observed from three out of the eight compounds studied. On the basis of the energetic criterion for ECL, the potential for oxidation of the intermediate free radical, Pr2N(CH.)Et, was found to be about -1.7 V vs SCE. By studying the fluorescence quenching of several polycyclic aromatic hydrocarbons (PAHs) by TPrA, the standard potential for oxidation of TPrA to TPrA(+.) was estimated as 0.9 V vs SCE.

引用

页码：3335 / 3340

页数：6

共 26 条

[1] EFFECT OF POLAR-SOLVENTS ON AMINE QUENCHING FOR PARA-FLUOROTOLUENE FLUORESCENCE [J].