Two-Photon Absorption Properties of New Fluorene-Based Singlet Oxygen Photosensitizers
Abbreviated Journal Title
J. Phys. Chem. C
DENSITY-FUNCTIONAL THEORY; CONJUGATED PORPHYRIN DIMERS; BOND-LENGTH; ALTERNATION; CONSISTENT BASIS-SETS; CROSS-SECTIONS; PHOTODYNAMIC; THERAPY; ENERGY-TRANSFER; 3-LEVEL MODEL; ONE-PHOTON; CHROMOPHORES; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, ; Multidisciplinary
The degenerate two-photon absorption (2PA) spectra of several fluorene-based photosensitizers (PS) in solution were obtained over a broad spectral range (460-880 nm) by open aperture Z-scan and two-photon fluorescence methods under either picosecond or femtosecond excitation, respectively. A maximum 2PA cross section of ca. 300 GM was observed for the photosensitizers containing a benzothiazole substituent in the fluorenyl 7-position. The electronic structures and 2PA properties of these PS were analyzed using a time-dependent density functional theory method, resulting in reasonably good agreement between experimental and theoretical data.
Journal of Physical Chemistry C
"Two-Photon Absorption Properties of New Fluorene-Based Singlet Oxygen Photosensitizers" (2009). Faculty Bibliography 2000s. 1334.