Optimising electrogenerated chemiluminescence of quantum dots via co-reactant selection

Russell, Rebekah and Stewart, Alasdair J. and Dennany, Lynn (2016) Optimising electrogenerated chemiluminescence of quantum dots via co-reactant selection. Analytical and Bioanalytical Chemistry, 408 (25). pp. 7129-7136. ISSN 1618-2642

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    Abstract

    We demonstrate that for quantum dot (QD) based electrochemiluminescence (ECL), the commonly used co-reactant does not preform as effectively as potassium persulfate. By exploiting this small change is co-reactant, ECL intensity can be enhanced dramatically in a cathodic based ECL system. However, TPA remains the preferential co-reactant based system for anodic ECL. This phenomenon can be rationalised through the relative energy level profiles of the QD to the co-reactant in conjunction with the applied potential range. This work highlights the importance of understanding the co-reactant pathway for optimising the application of ECL to bioanalytical analysis, in particular for near infrared (NIR) QDs which can be utilised for analysis in blood.

    ORCID iDs

    Russell, Rebekah, Stewart, Alasdair J. and Dennany, Lynn ORCID logoORCID: https://orcid.org/0000-0002-5481-1066;