Two-Photon Absorption Properties of New Fluorene-Based Singlet Oxygen Photosensitizers

被引：46

作者：

Belfield, Kevin D. ^{[1
,2
]}

Bondar, Mykhailo V. ^{[5
]}

Hernandez, Florencio E. ^{[1
,2
]}

Masunov, Artem E. ^{[1
,3
,4
]}

Mikhailov, Ivan A. ^{[3
]}

Morales, Alma R. ^{[1
]}

Przhonska, Olga V. ^{[5
]}

Yao, Sheng ^{[1
]}

机构：

[1] Univ Cent Florida, Dept Chem, Orlando, FL 32816 USA

[2] Univ Cent Florida, CREOL, Orlando, FL 32816 USA

[3] Univ Cent Florida, Coll Opt & Photon, Nanosci Technol Ctr, Orlando, FL 32816 USA

[4] Univ Cent Florida, Dept Phys, Orlando, FL 32816 USA

[5] Natl Acad Sci Ukraine, Inst Phys, UA-03028 Kiev, Ukraine

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 11期

基金：

美国国家科学基金会;

关键词：

CONJUGATED PORPHYRIN DIMERS; BOND-LENGTH ALTERNATION; CONSISTENT BASIS-SETS; CROSS-SECTIONS; ONE-PHOTON; SENSITIZERS; CHROMOPHORES; ENHANCEMENT; GENERATION;

D O I：

10.1021/jp8102832

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：4706 / 4711

页数：6

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