Visible light-induced long-lived charge separation across a sensitised nanostructured TiO2-polyviologen membrane

Journal of Materials Chemistry

Volumn 8, Issue 9, 1998, Pages 2033-2036

  Hoyle, Robert ^a   Will, Geoffrey ^a   Fitzmaurice, Donald ^a  

^a UNIVERSITY COLLEGE DUBLIN   (Ireland)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0009955540     PISSN: 09599428     EISSN: None     Source Type: Journal    
DOI: 10.1039/a803437k     Document Type: Article

References (22)

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9. G. Will, R. Hoyle, G. Boschloo, S. Nagaraja Rao and D. Fitzmaurice, unpublished work.
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12. 1H NMR spectroscopy and by elemental analysis. The results of these analyses indicate the polyviologen is composed of oligomers containing nine and seven viologen monomers respectively. An average of these two values was taken.
13. 2: H. Finklea, Semiconductor Electrodes, Elsevier, New York, 1988, ch. 2.
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19. In the absence of ethanol no reduction of the polyviologen film is observed following bandgap excitation. Similarly, in the absence of potassium iodide no reduction of the polyviologen film is observed following visible excitation.
20. The value for the overall quantum efficiency, defined as the total number of photons absorbed by the membrane in 60 s divided by the number of viologen monomers reduced, is a lower limit for the following reasons: no account has been taken for reflection or transmission losses, while the yield of reduced viologen was measured only after 60 s irradiation.
21. Similar assumption to those above have been made. In addition, the absorbance by the sensitised membrane at 532 nm is 0.3, see ref. 2.
22. R. Hoyle and D. Fitzmaurice, unpublished work.