PICOSECOND PUMP-PROBE SPECTROSCOPY OF DYES ON SURFACES: ELECTRONIC ENERGY RELAXATION IN AGGREGATES OF PSEUDOISOCYANINE ON COLLOIDAL SILICA.

Edward L. Quitevis; Miin Liang Horng; Sun Yung Chen

doi:10.1021/j100313a004

PICOSECOND PUMP-PROBE SPECTROSCOPY OF DYES ON SURFACES: ELECTRONIC ENERGY RELAXATION IN AGGREGATES OF PSEUDOISOCYANINE ON COLLOIDAL SILICA.

Edward L. Quitevis, Miin Liang Horng, Sun Yung Chen

Chemistry and Biochemistry

Research output: Contribution to journal › Article › peer-review

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Abstract

Picosecond optical pump-probe spectroscopy was used to measure electronic energy relaxation in aggregates of pseudoisocyanine on 40-Angstrom-diameter colloidal silica particles. The adsorption of pseudoisocyanine on colloidal silica was accompanied by the appearance of a sharp band at 569 nm, called the J-band, in the absorption spectrum. The J-band arises from an optical transition to a single-exciton state of aggregates absorbed on colloids. Nonexponential signals obtained from transient optical bleaching of the J-band are discussed in terms of a polariton model.

Original language	English
Pages (from-to)	256-260
Number of pages	5
Journal	Journal of physical chemistry
Volume	92
Issue number	2
DOIs	https://doi.org/10.1021/j100313a004
State	Published - 1988

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title = "PICOSECOND PUMP-PROBE SPECTROSCOPY OF DYES ON SURFACES: ELECTRONIC ENERGY RELAXATION IN AGGREGATES OF PSEUDOISOCYANINE ON COLLOIDAL SILICA.",

abstract = "Picosecond optical pump-probe spectroscopy was used to measure electronic energy relaxation in aggregates of pseudoisocyanine on 40-Angstrom-diameter colloidal silica particles. The adsorption of pseudoisocyanine on colloidal silica was accompanied by the appearance of a sharp band at 569 nm, called the J-band, in the absorption spectrum. The J-band arises from an optical transition to a single-exciton state of aggregates absorbed on colloids. Nonexponential signals obtained from transient optical bleaching of the J-band are discussed in terms of a polariton model.",

author = "Quitevis, {Edward L.} and Horng, {Miin Liang} and Chen, {Sun Yung}",

year = "1988",

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T2 - ELECTRONIC ENERGY RELAXATION IN AGGREGATES OF PSEUDOISOCYANINE ON COLLOIDAL SILICA.

AU - Quitevis, Edward L.

AU - Horng, Miin Liang

AU - Chen, Sun Yung

PY - 1988

Y1 - 1988

N2 - Picosecond optical pump-probe spectroscopy was used to measure electronic energy relaxation in aggregates of pseudoisocyanine on 40-Angstrom-diameter colloidal silica particles. The adsorption of pseudoisocyanine on colloidal silica was accompanied by the appearance of a sharp band at 569 nm, called the J-band, in the absorption spectrum. The J-band arises from an optical transition to a single-exciton state of aggregates absorbed on colloids. Nonexponential signals obtained from transient optical bleaching of the J-band are discussed in terms of a polariton model.

AB - Picosecond optical pump-probe spectroscopy was used to measure electronic energy relaxation in aggregates of pseudoisocyanine on 40-Angstrom-diameter colloidal silica particles. The adsorption of pseudoisocyanine on colloidal silica was accompanied by the appearance of a sharp band at 569 nm, called the J-band, in the absorption spectrum. The J-band arises from an optical transition to a single-exciton state of aggregates absorbed on colloids. Nonexponential signals obtained from transient optical bleaching of the J-band are discussed in terms of a polariton model.

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PICOSECOND PUMP-PROBE SPECTROSCOPY OF DYES ON SURFACES: ELECTRONIC ENERGY RELAXATION IN AGGREGATES OF PSEUDOISOCYANINE ON COLLOIDAL SILICA.

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