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Excited-state acidity monolayers

We have investigated the photocurrent behavior of multilayers of a Chi a-DPL (molar ratio 1/1) mixture on platinum in an aqueous electrolyte without added redox agents (80). Cathodic photocurrents with quantum efficiencies in the order of 10- were obtained with films consisting of a sufficient number of monolayers. The photocurrent was increased in acidic solutions. However, no appreciable photocurrent was observed with a single monolayer coated on platinum. The latter fact most probably results from minimal rectifying property of the metal surface and/or an efficient energy quenching of dye excited states by free electrons in... [Pg.243]

See other pages where Excited-state acidity monolayers is mentioned: [Pg.111]    [Pg.119]    [Pg.582]    [Pg.348]    [Pg.180]    [Pg.242]    [Pg.388]    [Pg.393]    [Pg.211]    [Pg.3]    [Pg.6388]    [Pg.20]    [Pg.484]    [Pg.168]    [Pg.176]    [Pg.222]    [Pg.191]    [Pg.108]    [Pg.200]   
See also in sourсe #XX -- [ Pg.61 ]



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Acid monolayers

Acidity excited-state

Excited-State Acids

Monolayers states

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