Regenerator dependent photoinduced desorption of a dicarboxylated cyanine dye from the surface of single-crystal rutile.

Regenerator dependent photoinduced desorption of a dicarboxylated cyanine dye from the surface of single-crystal rutile. Research Abstract Details 

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Regenerator dependent photoinduced desorption of a dicarboxylated cyanine dye from the surface of single-crystal rutile. Abstract Text:

Yunfeng Lu,Mark T Spitler,B A Parkinson,Yunfeng Lu,Mark T Spitler,B A Parkinson,

A photon-initiated desorption of a dicarboxylated thiacarbocyanine dye from a dye-sensitized semiconducting oxide crystal has been observed when hydroquinone is used as a regenerator. No desorption was found under the same conditions when KI was used as the regenerator. Intermittent illumination experiments suggest that the oxidation products of the hydroquinone regenerator compete for dye adsorption sites. By comparing the photocurrent decay at both the dye monomer sensitization maximum and the dimer sensitization maximum, a rearrangement of monomer into dimer was observed. A kinetic model for the photocurrent decay as a function of desorption time was derived, and the desorption rate constants were obtained by fitting the experimental data to the model.

Regenerator dependent photoinduced desorption of a dicarboxylated cyanine dye from the surface of single-crystal rutile. Publishing Authors By Initials

Y Lu,MT Spitler,BA Parkinson,Y Lu,MT Spitler,BA Parkinson,

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Regenerator dependent photoinduced desorption of a dicarboxylated cyanine dye from the surface of single-crystal rutile. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Langmuir : the ACS journal of surfaces and colloid

VOLUME: 23

Page Numbers: 11637-42

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ISSN: 0743-7463

DAY: 6

MONTH: 10

YEAR: 2007

Regenerator dependent photoinduced desorption of a dicarboxylated cyanine dye from the surface of single-crystal rutile. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Regenerator dependent photoinduced desorption of a dicarboxylated cyanine dye from the surface of single-crystal rutile.

AFFILIATION: Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA.

Country: United States

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