Observed Redox Potentials (DPV Experiments) of the Ru(III/II) Redox Couple of Ru(bpy)32+ in Zeolite Y Under Various Loadings of Ru(II) Complex and TiO2.
% Ru(bpy)32+a,b |
% TiO2a |
E0Ru2+/3+ / Vc |
peak width at 50% peak height (mV) |
peak current (mA)
|
23.3 |
0 |
1.276d |
185 |
- 1290 |
10.8 |
9.4 |
1.313e |
180 |
- 280 |
21.9 |
9.4 |
1.327e |
153 |
- 311 |
22.1 |
37.1 |
1.283d |
162 |
- 1390 |
Ru(bpy)32+ at C/Au-gridf |
/ |
1.265d |
105 |
- 305 |
aPercent by weight. b25.1% loading represents one Ru(bpy)32+ complex in each supercage. cvs SHE. dreversible electron transfer observed evirtually irreversible electron transfer observed in cathodic scan direction (DPV). f c = 2.54 x 10-4 M.