Two-photon absorption of a supramolecular pseudoisocyanine J-aggregate assembly
Abbreviated Journal Title
PIC; J-aggregates; two-photon absorption; excitation anisotropy; ONE-PHOTON; SPECTROSCOPY; ENHANCEMENT; FLUORESCENCE; DYE; RELAXATION; EXCITATION; DYNAMICS; WATER; SIZE; Chemistry, Physical; Physics, Atomic, Molecular & Chemical
Linear spectral properties, including excitation anisotropy, of pseudoisocyanine or 1, 1'-diethyl-2,2'-cyanine iodide (PIC) J-aggregates in aqueous solutions with J-band position at 573 nm were investigated. Two-photon absorption of PIC J-aggregates and monomer molecules was studied using an open aperture Z-scan technique. A strong enhancement of the two-photon absorption cross-section of PIC in the supramolecular J-aggregate assembly was observed in aqueous solution. This enhancement is attributed to a strong coupling of the molecular transition dipoles. No two-photon absorption at the peak of the J-band was detected. (c) 2005 Elsevier B.V. All rights reserved.
"Two-photon absorption of a supramolecular pseudoisocyanine J-aggregate assembly" (2006). Faculty Bibliography 2000s. 5939.