Deactivation of the ruthenium excited state by enhanced homogeneous charge transport: implications for electrochemiluminescent thin film sensors

Emmet J. O'Reilly, Tia E. Keyes, Robert J. Forster, Lynn Dennany

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The electrochemiluminescent (ECL) performance of three ruthenium-based metallopolymer platforms with different homogeneous charge transfer diffusion coefficients (DCT) is reported. Significantly, simultaneous detection of light and current in tandem with steady-state photoluminescence studies demonstrate that increasing the rate of Ru3+ production via enhanced charge transport results in a decrease in ECL intensity of up to 82% when the concentration of the co-reactant, sodium oxalate, is low, i.e., sub-mM. Spectroelectrochemical studies demonstrate that for maximum sensitivity to be obtained, the electroactive properties of the polymeric support matrix need to be considered in tandem with luminophore, analyte and co-reactant concentrations.
LanguageEnglish
Pages90-93
Number of pages4
JournalElectrochemistry Communications
Volume86
Early online date23 Nov 2017
DOIs
Publication statusPublished - 31 Jan 2018

Fingerprint

Ruthenium
Excited states
Charge transfer
Oxalic Acid
Thin films
Sensors
Photoluminescence
Sodium

Keywords

  • electrochemiluminescence (ECL)
  • [Ru(bpy)3]2+
  • ECL sensor design
  • electroactive polymers
  • chemiluminescence
  • quenching

Cite this

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title = "Deactivation of the ruthenium excited state by enhanced homogeneous charge transport: implications for electrochemiluminescent thin film sensors",
abstract = "The electrochemiluminescent (ECL) performance of three ruthenium-based metallopolymer platforms with different homogeneous charge transfer diffusion coefficients (DCT) is reported. Significantly, simultaneous detection of light and current in tandem with steady-state photoluminescence studies demonstrate that increasing the rate of Ru3+ production via enhanced charge transport results in a decrease in ECL intensity of up to 82{\%} when the concentration of the co-reactant, sodium oxalate, is low, i.e., sub-mM. Spectroelectrochemical studies demonstrate that for maximum sensitivity to be obtained, the electroactive properties of the polymeric support matrix need to be considered in tandem with luminophore, analyte and co-reactant concentrations.",
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Deactivation of the ruthenium excited state by enhanced homogeneous charge transport : implications for electrochemiluminescent thin film sensors. / O'Reilly, Emmet J.; Keyes, Tia E.; Forster, Robert J.; Dennany, Lynn.

In: Electrochemistry Communications, Vol. 86, 31.01.2018, p. 90-93.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Deactivation of the ruthenium excited state by enhanced homogeneous charge transport

T2 - Electrochemistry Communications

AU - O'Reilly, Emmet J.

AU - Keyes, Tia E.

AU - Forster, Robert J.

AU - Dennany, Lynn

PY - 2018/1/31

Y1 - 2018/1/31

N2 - The electrochemiluminescent (ECL) performance of three ruthenium-based metallopolymer platforms with different homogeneous charge transfer diffusion coefficients (DCT) is reported. Significantly, simultaneous detection of light and current in tandem with steady-state photoluminescence studies demonstrate that increasing the rate of Ru3+ production via enhanced charge transport results in a decrease in ECL intensity of up to 82% when the concentration of the co-reactant, sodium oxalate, is low, i.e., sub-mM. Spectroelectrochemical studies demonstrate that for maximum sensitivity to be obtained, the electroactive properties of the polymeric support matrix need to be considered in tandem with luminophore, analyte and co-reactant concentrations.

AB - The electrochemiluminescent (ECL) performance of three ruthenium-based metallopolymer platforms with different homogeneous charge transfer diffusion coefficients (DCT) is reported. Significantly, simultaneous detection of light and current in tandem with steady-state photoluminescence studies demonstrate that increasing the rate of Ru3+ production via enhanced charge transport results in a decrease in ECL intensity of up to 82% when the concentration of the co-reactant, sodium oxalate, is low, i.e., sub-mM. Spectroelectrochemical studies demonstrate that for maximum sensitivity to be obtained, the electroactive properties of the polymeric support matrix need to be considered in tandem with luminophore, analyte and co-reactant concentrations.

KW - electrochemiluminescence (ECL)

KW - [Ru(bpy)3]2+

KW - ECL sensor design

KW - electroactive polymers

KW - chemiluminescence

KW - quenching

UR - http://www.sciencedirect.com/science/journal/13882481

U2 - 10.1016/j.elecom.2017.11.020

DO - 10.1016/j.elecom.2017.11.020

M3 - Article

VL - 86

SP - 90

EP - 93

JO - Electrochemistry Communications

JF - Electrochemistry Communications

SN - 1388-2481

ER -