Nonlinear transmission and excited-state absorption in fluorene derivatives

Kevin D. Belfield; Mykhailo V. Bondar; Florencio E. Hernandez; Alma R. Morales; Olga V. Przhonska; Katherine J. Schafer

doi:10.1364/AO.43.006339

Nonlinear transmission and excited-state absorption in fluorene derivatives

Kevin D. Belfield, Mykhailo V. Bondar, Florencio E. Hernandez, Alma R. Morales, Olga V. Przhonska, Katherine J. Schafer

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

10 Scopus citations

Abstract

The nonlinear transmission and the excited-state absorption spectra of three fluorene derivatives exhibiting large two-photon absorptivity were measured by the third harmonic of a picosecond Nd:YAG laser. We analyzed their capability for exhibiting stimulated emission in polar solvents and found that asymmetrical fluorene compounds with a diphenylamino substituent exhibited large Stokes shifts (∼8000 cm^-1), high quantum yields (∼0.9-1.0), and no optical gain over their entire fluorescence spectral region. In contrast, a symmetrical fluorene derivative with vinylphenylbenzothiazole substituents in positions 2 and 7 underwent lasing under one-photon excitation by use of picosecond pulsed irradiation.

Original language	English (US)
Pages (from-to)	6339-6343
Number of pages	5
Journal	Applied Optics
Volume	43
Issue number	34
DOIs	https://doi.org/10.1364/AO.43.006339
State	Published - Dec 1 2004
Externally published	Yes

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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10.1364/AO.43.006339

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title = "Nonlinear transmission and excited-state absorption in fluorene derivatives",

abstract = "The nonlinear transmission and the excited-state absorption spectra of three fluorene derivatives exhibiting large two-photon absorptivity were measured by the third harmonic of a picosecond Nd:YAG laser. We analyzed their capability for exhibiting stimulated emission in polar solvents and found that asymmetrical fluorene compounds with a diphenylamino substituent exhibited large Stokes shifts (∼8000 cm-1), high quantum yields (∼0.9-1.0), and no optical gain over their entire fluorescence spectral region. In contrast, a symmetrical fluorene derivative with vinylphenylbenzothiazole substituents in positions 2 and 7 underwent lasing under one-photon excitation by use of picosecond pulsed irradiation.",

author = "Belfield, {Kevin D.} and Bondar, {Mykhailo V.} and Hernandez, {Florencio E.} and Morales, {Alma R.} and Przhonska, {Olga V.} and Schafer, {Katherine J.}",

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T1 - Nonlinear transmission and excited-state absorption in fluorene derivatives

AU - Belfield, Kevin D.

AU - Bondar, Mykhailo V.

AU - Hernandez, Florencio E.

AU - Morales, Alma R.

AU - Przhonska, Olga V.

AU - Schafer, Katherine J.

PY - 2004/12/1

Y1 - 2004/12/1

N2 - The nonlinear transmission and the excited-state absorption spectra of three fluorene derivatives exhibiting large two-photon absorptivity were measured by the third harmonic of a picosecond Nd:YAG laser. We analyzed their capability for exhibiting stimulated emission in polar solvents and found that asymmetrical fluorene compounds with a diphenylamino substituent exhibited large Stokes shifts (∼8000 cm-1), high quantum yields (∼0.9-1.0), and no optical gain over their entire fluorescence spectral region. In contrast, a symmetrical fluorene derivative with vinylphenylbenzothiazole substituents in positions 2 and 7 underwent lasing under one-photon excitation by use of picosecond pulsed irradiation.

AB - The nonlinear transmission and the excited-state absorption spectra of three fluorene derivatives exhibiting large two-photon absorptivity were measured by the third harmonic of a picosecond Nd:YAG laser. We analyzed their capability for exhibiting stimulated emission in polar solvents and found that asymmetrical fluorene compounds with a diphenylamino substituent exhibited large Stokes shifts (∼8000 cm-1), high quantum yields (∼0.9-1.0), and no optical gain over their entire fluorescence spectral region. In contrast, a symmetrical fluorene derivative with vinylphenylbenzothiazole substituents in positions 2 and 7 underwent lasing under one-photon excitation by use of picosecond pulsed irradiation.

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Nonlinear transmission and excited-state absorption in fluorene derivatives

Abstract

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