Insights into electrochemiluminescent enhancement through electrode surface modification

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

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The electrochemiluminescent (ECL) properties of a luminescent metal centre, [Ru(bpy)(3)](2+), can be significantly modulated through its electronic interaction with neighbouring centres and the polymer backbone used to confine it on an electrode surface. From the perspective of ECL based sensing devices, an increase in the ECL efficiency of a metallopolymer film can result in enhanced sensor sensitivity and selectivity. This work probes the ECL properties of both conjugated, [Ru(bpy)(2)(PPyBBIM)(10)](2+), and non-conjugated, [Ru(bpy)(2)(PVP)(10)](2+), ruthenium based metallopolymer films based on a well documented reaction with sodium oxalate, where bpy is 2,2'-bipyridyl, PPYBBIM is poly[2-(2-pyridyl)-bibenzimidazole] and PVP is poly(4-vinylpyridine). Through a combination of ground state electrochemical studies and ECL measurements, the ECL efficiency for each film is determined. This study reveals that despite a dramatic influence in charge transfer rates between metal centres, as observed for the conducting polymer, mediated through the conducting polymer backbone, a corresponding increase in ECL efficiency is not always observed. The degree of communication between the adjacent excited state metal centres are an important consideration for ECL enhancement however self quenching, luminophore distribution and film porosity must also be considered.

LanguageEnglish
Pages677-682
Number of pages6
JournalAnalyst
Volume138
Issue number2
Early online date22 Nov 2012
DOIs
Publication statusPublished - 21 Jan 2013

Fingerprint

Surface treatment
Polymers
Electrodes
electrode
Metals
polymer
Conducting polymers
Oxalic Acid
metal
2,2'-Dipyridyl
Ruthenium
Porosity
ruthenium
oxalate
Excited states
Ground state
Charge transfer
Quenching
Equipment and Supplies
porosity

Keywords

  • electrochemiluminescent enhancement
  • electrode surface modification
  • ECL
  • luminescent metal centre
  • polymer

Cite this

O'Reilly, Emmet J. ; Keyes, Tia E. ; Forster, Robert J. ; Dennany, Lynn. / Insights into electrochemiluminescent enhancement through electrode surface modification. In: Analyst. 2013 ; Vol. 138, No. 2. pp. 677-682.
@article{9fd9d8cad9ec4e4ca513951b214d7f1f,
title = "Insights into electrochemiluminescent enhancement through electrode surface modification",
abstract = "The electrochemiluminescent (ECL) properties of a luminescent metal centre, [Ru(bpy)(3)](2+), can be significantly modulated through its electronic interaction with neighbouring centres and the polymer backbone used to confine it on an electrode surface. From the perspective of ECL based sensing devices, an increase in the ECL efficiency of a metallopolymer film can result in enhanced sensor sensitivity and selectivity. This work probes the ECL properties of both conjugated, [Ru(bpy)(2)(PPyBBIM)(10)](2+), and non-conjugated, [Ru(bpy)(2)(PVP)(10)](2+), ruthenium based metallopolymer films based on a well documented reaction with sodium oxalate, where bpy is 2,2'-bipyridyl, PPYBBIM is poly[2-(2-pyridyl)-bibenzimidazole] and PVP is poly(4-vinylpyridine). Through a combination of ground state electrochemical studies and ECL measurements, the ECL efficiency for each film is determined. This study reveals that despite a dramatic influence in charge transfer rates between metal centres, as observed for the conducting polymer, mediated through the conducting polymer backbone, a corresponding increase in ECL efficiency is not always observed. The degree of communication between the adjacent excited state metal centres are an important consideration for ECL enhancement however self quenching, luminophore distribution and film porosity must also be considered.",
keywords = "electrochemiluminescent enhancement, electrode surface modification, ECL, luminescent metal centre, polymer",
author = "O'Reilly, {Emmet J.} and Keyes, {Tia E.} and Forster, {Robert J.} and Lynn Dennany",
year = "2013",
month = "1",
day = "21",
doi = "10.1039/c2an36045d",
language = "English",
volume = "138",
pages = "677--682",
journal = "Analyst",
issn = "0003-2654",
number = "2",

}

Insights into electrochemiluminescent enhancement through electrode surface modification. / O'Reilly, Emmet J.; Keyes, Tia E.; Forster, Robert J.; Dennany, Lynn.

In: Analyst, Vol. 138, No. 2, 21.01.2013, p. 677-682.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Insights into electrochemiluminescent enhancement through electrode surface modification

AU - O'Reilly, Emmet J.

AU - Keyes, Tia E.

AU - Forster, Robert J.

AU - Dennany, Lynn

PY - 2013/1/21

Y1 - 2013/1/21

N2 - The electrochemiluminescent (ECL) properties of a luminescent metal centre, [Ru(bpy)(3)](2+), can be significantly modulated through its electronic interaction with neighbouring centres and the polymer backbone used to confine it on an electrode surface. From the perspective of ECL based sensing devices, an increase in the ECL efficiency of a metallopolymer film can result in enhanced sensor sensitivity and selectivity. This work probes the ECL properties of both conjugated, [Ru(bpy)(2)(PPyBBIM)(10)](2+), and non-conjugated, [Ru(bpy)(2)(PVP)(10)](2+), ruthenium based metallopolymer films based on a well documented reaction with sodium oxalate, where bpy is 2,2'-bipyridyl, PPYBBIM is poly[2-(2-pyridyl)-bibenzimidazole] and PVP is poly(4-vinylpyridine). Through a combination of ground state electrochemical studies and ECL measurements, the ECL efficiency for each film is determined. This study reveals that despite a dramatic influence in charge transfer rates between metal centres, as observed for the conducting polymer, mediated through the conducting polymer backbone, a corresponding increase in ECL efficiency is not always observed. The degree of communication between the adjacent excited state metal centres are an important consideration for ECL enhancement however self quenching, luminophore distribution and film porosity must also be considered.

AB - The electrochemiluminescent (ECL) properties of a luminescent metal centre, [Ru(bpy)(3)](2+), can be significantly modulated through its electronic interaction with neighbouring centres and the polymer backbone used to confine it on an electrode surface. From the perspective of ECL based sensing devices, an increase in the ECL efficiency of a metallopolymer film can result in enhanced sensor sensitivity and selectivity. This work probes the ECL properties of both conjugated, [Ru(bpy)(2)(PPyBBIM)(10)](2+), and non-conjugated, [Ru(bpy)(2)(PVP)(10)](2+), ruthenium based metallopolymer films based on a well documented reaction with sodium oxalate, where bpy is 2,2'-bipyridyl, PPYBBIM is poly[2-(2-pyridyl)-bibenzimidazole] and PVP is poly(4-vinylpyridine). Through a combination of ground state electrochemical studies and ECL measurements, the ECL efficiency for each film is determined. This study reveals that despite a dramatic influence in charge transfer rates between metal centres, as observed for the conducting polymer, mediated through the conducting polymer backbone, a corresponding increase in ECL efficiency is not always observed. The degree of communication between the adjacent excited state metal centres are an important consideration for ECL enhancement however self quenching, luminophore distribution and film porosity must also be considered.

KW - electrochemiluminescent enhancement

KW - electrode surface modification

KW - ECL

KW - luminescent metal centre

KW - polymer

UR - http://www.scopus.com/inward/record.url?scp=84870884339&partnerID=8YFLogxK

U2 - 10.1039/c2an36045d

DO - 10.1039/c2an36045d

M3 - Article

VL - 138

SP - 677

EP - 682

JO - Analyst

T2 - Analyst

JF - Analyst

SN - 0003-2654

IS - 2

ER -