Electrogenerated Chemiluminescence. 67. Dependence of Light Emission of the Tris(2,2‘)bipyridylruthenium(II)/Tripropylamine System on Electrode Surface Hydrophobicity

2001 ◽  
Vol 73 (16) ◽  
pp. 3960-3964 ◽  
Author(s):  
Yanbing Zu ◽  
Allen J. Bard
Keyword(s):  
Electrode Surface ◽  
Light Emission ◽  
Surface Hydrophobicity ◽  
Electrogenerated Chemiluminescence

scholarly journals A Comparison of Commercially Available Screen-Printed Electrodes for Electrogenerated Chemiluminescence Applications

2021 ◽  
Vol 8 ◽  
Author(s):  
Emily Kerr ◽  
Richard Alexander ◽  
Paul S. Francis ◽  
Rosanne M. Guijt ◽  
Gregory J. Barbante ◽  
...  
Keyword(s):  
Electrode Surface ◽  
Homogeneous Solution ◽  
Electrogenerated Chemiluminescence ◽  
Platinum Electrodes ◽  
Oxide Formation ◽  
Detection Systems ◽  
Screen Printed Electrodes ◽  
Ordered Mesoporous ◽  
Surface Oxide Formation ◽  
Screen Printed

We examined a series of commercially available screen-printed electrodes (SPEs) for their suitability for electrochemical and electrogenerated chemiluminescence (ECL) detection systems. Using cyclic voltammetry with both a homogeneous solution-based and a heterogeneous bead-based ECL assay format, the most intense ECL signals were observed from unmodified carbon-based SPEs. Three commercially available varieties were tested, with Zensor outperforming DropSens and Kanichi in terms of sensitivity. The incorporation of nanomaterials in the electrode did not significantly enhance the ECL intensity under the conditions used in this evaluation (such as gold nanoparticles 19%, carbon nanotubes 45%, carbon nanofibers 21%, graphene 48%, and ordered mesoporous carbon 21% compared to the ECL intensity of unmodified Zensor carbon electrode). Platinum and gold SPEs exhibited poor relative ECL intensities (16% and 10%) when compared to carbonaceous materials, due to their high rates of surface oxide formation and inefficient oxidation of tri-n-propylamine (TPrA). However, the ECL signal at platinum electrodes can be increased ∼3-fold with the addition of a surfactant, which enhanced TPrA oxidation due to increasing the hydrophobicity of the electrode surface. Our results also demonstrate that each SPE should only be used once, as we observed a significant change in ECL intensity over repeated CV scans and SPEs cannot be mechanically polished to refresh the electrode surface.

Surfactant Chain Length Effects on the Light Emission of Tris(2,2‘-bipyridyl)ruthenium(II)/Tripropylamine Electrogenerated Chemiluminescence

2001 ◽  
Vol 73 (19) ◽  
pp. 4621-4624 ◽  
Author(s):  
Brigitte Factor ◽  
Brian Muegge ◽  
Scott Workman ◽  
Ed Bolton ◽  
Jon Bos ◽  
...  
Keyword(s):  
Chain Length ◽  
Light Emission ◽  
Electrogenerated Chemiluminescence ◽  
Length Effects

[Ru(dpp)3][(4-Clph)4B]2Nanoislands Directly Assembled on an ITO Electrode Surface and Its Electrogenerated Chemiluminescence

Langmuir ◽  
2009 ◽  
Vol 25 (2) ◽  
pp. 1253-1258 ◽  
Author(s):  
Ying Chen ◽  
Jianfei Mao ◽  
Chunhua Liu ◽  
Hongyan Yuan ◽  
Dan Xiao ◽  
...  
Keyword(s):  
Electrode Surface ◽  
Electrogenerated Chemiluminescence ◽  
Ito Electrode

Tunable electrogenerated chemiluminescence from CdSe nanocrystals

2009 ◽  
Vol 87 (1) ◽  
pp. 386-391 ◽  
Author(s):  
Jigang Zhou ◽  
Jun Zhu ◽  
Jack Brzezinski ◽  
Zhifeng Ding
Keyword(s):  
Band Gap ◽  
Absorption Spectroscopy ◽  
Electrochemical Behavior ◽  
Light Emission ◽  
Tunneling Current ◽  
Optoelectronic Properties ◽  
Electrogenerated Chemiluminescence ◽  
Cdse Nanocrystals ◽  
Current Voltage ◽  
Vis Spectroscopy

Electrochemical behavior and related optoelectronic properties of CdSe nanocrystals (NCs) in aprotic solutions have been investigated. NCs of 2.50 ± 0.50 nm diameter were synthesized using a modified procedure in which the temperatures at the time of Se precursor injection and NC growth were controlled. The electrochemical band gap was found to agree with those determined by UV–vis absorption spectroscopy and by the tunneling current-voltage spectrum in the literature. Electrogenerated chemiluminescence of the NCs with peak maxima at 1.90 eV (red, 653 nm) and 2.55 eV (blue, 486 nm) can be generated and altered by scanning the voltage between –1.60 and –1.80 V and between –2.00 and –2.20 V, respectively. The results demonstrate the potential capability of the NCs for light emission tuned by the applied potential.Key words: CdSe nanocrystals, electrochemistry, electrogenerated chemiluminescence, UV–vis spectroscopy, photoluminescence.

Electrogenerated chemiluminescence at a 9,10-diphenylanthracene/polyvinyl butyral film modified electrode with a tetraphenylborate coreactant

The Analyst ◽  
2018 ◽  
Vol 143 (14) ◽  
pp. 3425-3432 ◽  
Author(s):  
Yuriy T. Zholudov ◽  
Guobao Xu
Keyword(s):  
Modified Electrode ◽  
Electrode Surface ◽  
Polyvinyl Butyral ◽  
Electrogenerated Chemiluminescence

A tetraphenylborate coreactant provides efficient ECL excitation of fluorophores immobilized on the electrode surface.

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