TY - JOUR
T1 - Photocurrent generation from thin films of ruthenium metallopolymer: polyoxometalate adducts using visible excitation
AU - Zhu, Jie
AU - Zeng, Qiang
AU - O'carroll, Shane
AU - Bond, Alan
AU - Keyes, Tia
AU - Forster, Robert
PY - 2011
Y1 - 2011
N2 - Thin layers of an electrostatically associated adduct formed between the polyoxomolybdate, [S(2)Mo(18)O(62)](4-). and the metallopolymers [Ru(bpy)(2)(PVP)(10)](2+) or [Ru(bpy)(2)(CO-P PIC)(7)](2+) have been deposited onto electrodes using alternate immersion layer-by-layer assembly; PVP is poly(4-vinylpyridine), bpy is 2,2 -bipyridyl, CO-P is poly[(4-(aminomethyl)styrene)(1) (4-vinylpyridine)(6)] and PIC is 2-(4-carboxyphenyl) imidazo [4,5-f][1,10] phenanthroline. Raman spectroscopy reveals that the Ru-PVP:POM films exhibit an additional vibrational mode at 900 cm(-1) that is not present in either of the components suggesting significant electronic communication between the ruthenium centres and the polyoxomolybdate. Despite the similarity of their redox and photonic properties, this optical transition is absent in the Ru-Co-P:POM layers. Significantly, the Ru-PVP:POM films generate a higher photocurrent (38 +/- 1 nA cm(-2)) than the Ru-Co-P:POM films (8.9 +/- 0.8 nA cm(-2)) or [S(2)Mo(18)O(62)](4-) films (9.7 +/- 1.1 nA cm(-2)) under visible irradiation.
AB - Thin layers of an electrostatically associated adduct formed between the polyoxomolybdate, [S(2)Mo(18)O(62)](4-). and the metallopolymers [Ru(bpy)(2)(PVP)(10)](2+) or [Ru(bpy)(2)(CO-P PIC)(7)](2+) have been deposited onto electrodes using alternate immersion layer-by-layer assembly; PVP is poly(4-vinylpyridine), bpy is 2,2 -bipyridyl, CO-P is poly[(4-(aminomethyl)styrene)(1) (4-vinylpyridine)(6)] and PIC is 2-(4-carboxyphenyl) imidazo [4,5-f][1,10] phenanthroline. Raman spectroscopy reveals that the Ru-PVP:POM films exhibit an additional vibrational mode at 900 cm(-1) that is not present in either of the components suggesting significant electronic communication between the ruthenium centres and the polyoxomolybdate. Despite the similarity of their redox and photonic properties, this optical transition is absent in the Ru-Co-P:POM layers. Significantly, the Ru-PVP:POM films generate a higher photocurrent (38 +/- 1 nA cm(-2)) than the Ru-Co-P:POM films (8.9 +/- 0.8 nA cm(-2)) or [S(2)Mo(18)O(62)](4-) films (9.7 +/- 1.1 nA cm(-2)) under visible irradiation.
UR - http://www.sciencedirect.com/science/article/pii/S1388248111000658
U2 - 10.1016/j.elecom.2011.02.010
DO - 10.1016/j.elecom.2011.02.010
M3 - Article
VL - 13
SP - 899
EP - 902
JO - Electrochemistry Communications
JF - Electrochemistry Communications
SN - 1388-2481
IS - 9
ER -