Mega three-photon absorption cross-section enhancement in pseudoisocyanine J-aggregates

Ion Cohanoschi; Amel Barbot; Kevin D. Belfield; Sheng Yao; Florencio E. Hernandez

doi:10.1063/1.2150209

Mega three-photon absorption cross-section enhancement in pseudoisocyanine J-aggregates

Ion Cohanoschi, Amel Barbot, Kevin D. Belfield, Sheng Yao, Florencio E. Hernandez

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

9 Scopus citations

Abstract

Herein we report an extraordinary three-photon absorption cross-section (σ3′) enhancement in J-aggregates supramolecular systems. The much higher value of σ3′ in PIC J-aggregate (2.5× 10-71 cm6 s2 ph-2) compared to typical values obtained in organic molecules (10-80 cm6 s2 ph-2) is attributed to the strong molecular transition dipole moment coupling in the supramolecular assembly. Three-photon absorption of PIC J-aggregates and monomer aqueous solutions were measured using the well known open aperture Z -scan technique pumping with a 25 ps pulse laser-OPG system at 1720 nm. This novel result opens new expectations for applications of supramolecular systems in bioimaging and medicine.

Original language	English (US)
Article number	231104
Journal	Journal of Chemical Physics
Volume	123
Issue number	23
DOIs	https://doi.org/10.1063/1.2150209
State	Published - 2005
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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title = "Mega three-photon absorption cross-section enhancement in pseudoisocyanine J-aggregates",

abstract = "Herein we report an extraordinary three-photon absorption cross-section (σ3′) enhancement in J-aggregates supramolecular systems. The much higher value of σ3′ in PIC J-aggregate (2.5× 10-71 cm6 s2 ph-2) compared to typical values obtained in organic molecules (10-80 cm6 s2 ph-2) is attributed to the strong molecular transition dipole moment coupling in the supramolecular assembly. Three-photon absorption of PIC J-aggregates and monomer aqueous solutions were measured using the well known open aperture Z -scan technique pumping with a 25 ps pulse laser-OPG system at 1720 nm. This novel result opens new expectations for applications of supramolecular systems in bioimaging and medicine.",

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T1 - Mega three-photon absorption cross-section enhancement in pseudoisocyanine J-aggregates

AU - Cohanoschi, Ion

AU - Barbot, Amel

AU - Belfield, Kevin D.

AU - Yao, Sheng

AU - Hernandez, Florencio E.

PY - 2005

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N2 - Herein we report an extraordinary three-photon absorption cross-section (σ3′) enhancement in J-aggregates supramolecular systems. The much higher value of σ3′ in PIC J-aggregate (2.5× 10-71 cm6 s2 ph-2) compared to typical values obtained in organic molecules (10-80 cm6 s2 ph-2) is attributed to the strong molecular transition dipole moment coupling in the supramolecular assembly. Three-photon absorption of PIC J-aggregates and monomer aqueous solutions were measured using the well known open aperture Z -scan technique pumping with a 25 ps pulse laser-OPG system at 1720 nm. This novel result opens new expectations for applications of supramolecular systems in bioimaging and medicine.

AB - Herein we report an extraordinary three-photon absorption cross-section (σ3′) enhancement in J-aggregates supramolecular systems. The much higher value of σ3′ in PIC J-aggregate (2.5× 10-71 cm6 s2 ph-2) compared to typical values obtained in organic molecules (10-80 cm6 s2 ph-2) is attributed to the strong molecular transition dipole moment coupling in the supramolecular assembly. Three-photon absorption of PIC J-aggregates and monomer aqueous solutions were measured using the well known open aperture Z -scan technique pumping with a 25 ps pulse laser-OPG system at 1720 nm. This novel result opens new expectations for applications of supramolecular systems in bioimaging and medicine.

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Mega three-photon absorption cross-section enhancement in pseudoisocyanine J-aggregates

Abstract

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