TY - JOUR
T1 - Potential modulated electrochemiluminescence of ruthenium containing metallopolymer films
AU - Venkatanarayanan, Anita
AU - O'Connell, Barry S.
AU - Devadoss, Anitha
AU - Keyes, Tia E.
AU - Forster, Robert J.
PY - 2011/5
Y1 - 2011/5
N2 - Phase-modulated electrochemiluminescence (ECL), induced by modulating the applied potential, is reported for thin films of the metallopolymer, [Ru(bpy)2PVP10]2+, where bpy is 2,2′-bipyridyl and PVP is Poly 4-vinyl pyridine. Using a frequency of 0.25 Hz and an amplitude of 60 mV, a detection limit of 5 μM was obtained for oxalate which is a factor two lower than that obtained using a static DC potential. Significantly, the modulation technique shows higher sensitivity with a slope equal to 15.6 intensity units mM− 1 which is an order of magnitude larger than the unmodulated signal. The phase-modulated approach significantly increases the ECL signal-to-noise ratio, allows ECL measurements to be recorded under ambient light conditions and decreases the measurement time.
AB - Phase-modulated electrochemiluminescence (ECL), induced by modulating the applied potential, is reported for thin films of the metallopolymer, [Ru(bpy)2PVP10]2+, where bpy is 2,2′-bipyridyl and PVP is Poly 4-vinyl pyridine. Using a frequency of 0.25 Hz and an amplitude of 60 mV, a detection limit of 5 μM was obtained for oxalate which is a factor two lower than that obtained using a static DC potential. Significantly, the modulation technique shows higher sensitivity with a slope equal to 15.6 intensity units mM− 1 which is an order of magnitude larger than the unmodulated signal. The phase-modulated approach significantly increases the ECL signal-to-noise ratio, allows ECL measurements to be recorded under ambient light conditions and decreases the measurement time.
U2 - 10.1016/j.elecom.2011.01.031
DO - 10.1016/j.elecom.2011.01.031
M3 - Article
SN - 1388-2481
VL - 13
SP - 396
EP - 398
JO - Electrochemistry Communications
JF - Electrochemistry Communications
IS - 5
ER -