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Mobile phone-based electrochemiluminescence sensing exploitingthe ‘USB On-The-Go’ protocol
Doeven, EH and Barbante, GJ and Harsant, AJ and Donnelly, PS and Connell, TU and Hogan, D and Francis, PS, Mobile phone-based electrochemiluminescence sensing exploitingthe USB On-The-Go' protocol, Sensors and Actuators B: Chemical, 216 pp. 608-613. ISSN 0925-4005 (2015) [Refereed Article]
Copyright 2015 Elsevier B.V.
A low-cost system to generate, control and detect electrochemiluminescence using a mobile smartphone is described. A simple tone-detection integrated circuit is used to switch power sourced from the phone's Universal Serial Bus (USB) ‘On-The-Go’ (OTG) port, using audible tone pulses played over the device's audio jack. We have successfully applied this approach to smartphones from different manufacturers and with different operating system versions. ECL calibrations of a common luminophore, tris(2,2′-bipyridine)ruthenium(II) ([Ru(bpy)3]2+), with 2-(dibutylamino)ethanol (DBAE) as a co-reactant, showed no significant difference in light intensities when an electrochemical cell was controlled by a mobile phone in this manner, compared to the same calibration generated using a conventional potentiostat. Combining this novel approach to control the applied potential with the measurement of the emitted light through the smart phone camera (using an in-house built Android app), we explored the ECL properties of a water-soluble iridium(III) complex that emits in the blue region of the spectrum. The iridium(III) complex exhibited superior co-reactant ECL intensities and limits of detection to that of the conventional [Ru(bpy)3]2+ luminophore.
|Item Type:||Refereed Article|
|Keywords:||development of low cost sensing strategies, smartphone sensor, mobile phone sensor, portable analytical devices, electrogenerated chemiluminescence, electrochemiluminescence|
|Research Division:||Chemical Sciences|
|Research Group:||Analytical chemistry|
|Research Field:||Sensor technology (incl. chemical aspects)|
|Objective Division:||Expanding Knowledge|
|Objective Group:||Expanding knowledge|
|Objective Field:||Expanding knowledge in the chemical sciences|
|UTAS Author:||Barbante, GJ (Dr Gregory Barbante)|
|Web of Science® Times Cited:||60|
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