Evolution of nanomaterial electrochemiluminescence luminophores towards biocompatible materials

Sioban O'Connor, Lynn Dennany, Emmet O'Reilly

Research output: Contribution to journalArticlepeer-review

Abstract

Electrochemiluminescence (ECL) is a powerful electrochemical technique for the detection and quantification of molecules, both synthetic and biological in origin. Traditional ECL luminophores are based on organic or organometallic compounds, however nanoparticle-based materials offer the benefits of tuneable wavelengths and narrow emission profiles. Materials based on cadmium have been the most extensively studied for ECL nanoparticles to date. Cadmium based nanoparticles exhibit high levels of toxicity thereby impacting their suitability for mass produced sensing applications. As such, alternative materials with reduced toxicities are required. This review focuses on the innovations and applications of low toxicity semi-conductor quantum dots (SCQDs) utilised as ECL luminophores within biosensors. These materials include silver, copper, zinc, tin, silicon and germanium. This contribution presents an evaluative overview of these materials for use as ECL luminophores in terms of toxicity, tunability of emission, potential for amplification, and water dispersibility. Capacity for functionalisation and multiplexing potential are also explored.
Original languageEnglish
Article number108286
Number of pages13
JournalBioelectrochemistry
Volume149
Early online date7 Oct 2022
DOIs
Publication statusE-pub ahead of print - 7 Oct 2022

Keywords

  • electrochemiluminescence
  • nanomaterials
  • low toxicity
  • quantum dots
  • biosensing

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