Ultrafast spectroscopy, superluminescence and theoretical modeling of a two-photon absorbing fluorene derivative

Document Type

Article

Publication Date

1-1-2016

Abstract

A comprehensive study of photophysical and photochemical properties of an unsymmetrical fluorene derivative is presented, including linear absorption, fluorescence excitation anisotropy, photochemical stability, steady-state fluorescence, and fluorescence lifetimes in organic solvents of different polarities. Nonlinear optical properties were investigated using Z-scan measurements of degenerate two-photon absorption and femtosecond pump-probe spectroscopy. The strongly fluorescent compound exhibited good photostability, positioning it for use in a number of applications. A dramatic increase in fluorescence intensity along with spectral narrowing was observed under femtosecond pumping, demonstrating amplified spontaneous emission. An extensive set of experimental data is rationalized based on essential state models.

Identifier

84973519876 (Scopus)

Publication Title

Physical Chemistry Chemical Physics

External Full Text Location

https://doi.org/10.1039/c6cp01393g

ISSN

14639076

First Page

12839

Last Page

12846

Issue

18

Volume

18

Grant

607721

Fund Ref

European Commission

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