Steady-State Spectroscopic and Fluorescence Lifetime Measurements of New Two-Photon Absorbing Fluorene Derivatives

Kevin D. Belfield; Mikhailo V. Bondar; Olga V. Przhonska; Katherine J. Schafer

doi:10.1023/A:1021322228428

Steady-State Spectroscopic and Fluorescence Lifetime Measurements of New Two-Photon Absorbing Fluorene Derivatives

Kevin D. Belfield
, Mikhailo V. Bondar
, Olga V. Przhonska
, Katherine J. Schafer

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

30 Scopus citations

Abstract

Steady-state excitation anisotropy, lifetimes, and time-resolved emission spectra of new 2-photon absorbing fluorene derivatives were measured in aprotic solvents at room temperature. Excitation anisotropy spectra in viscous silicon oil allowed the determination of the spectral position cf three electronic transitions S₀ → S₁, S₀ → S ₂, S₀ → S₃ (S_i i = 1, 2, 3 are the singlet electronic states) and the angles (∼ 30°) between absorption S₀ → S₁ and emission S₁ → S ₀ dipole moments for the first electronic transition. Solvate relaxation processes in the first excited state of the investigated fluorene molecules affect the lifetimes of these states, τ_1, so that experimental values of τ₁ do not correspond to those calculated by Strickler and Berg theory. The influence of the molecular concentration on the fluorescence quantum yields and τ₁ have been investigated.

Original language	English (US)
Pages (from-to)	449-454
Number of pages	6
Journal	Journal of Fluorescence
Volume	12
Issue number	3-4
DOIs	https://doi.org/10.1023/A:1021322228428
State	Published - Dec 2002
Externally published	Yes

All Science Journal Classification (ASJC) codes

Biochemistry
Clinical Psychology
Social Sciences (miscellaneous)
Sociology and Political Science
Spectroscopy
Clinical Biochemistry
Law

Keywords

Anisotropy
Fluorescence lifetime
Steady-state spectroscopy

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10.1023/A:1021322228428

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title = "Steady-State Spectroscopic and Fluorescence Lifetime Measurements of New Two-Photon Absorbing Fluorene Derivatives",

abstract = "Steady-state excitation anisotropy, lifetimes, and time-resolved emission spectra of new 2-photon absorbing fluorene derivatives were measured in aprotic solvents at room temperature. Excitation anisotropy spectra in viscous silicon oil allowed the determination of the spectral position cf three electronic transitions S0 → S1, S0 → S 2, S0 → S3 (Si i = 1, 2, 3 are the singlet electronic states) and the angles (∼ 30°) between absorption S0 → S1 and emission S1 → S 0 dipole moments for the first electronic transition. Solvate relaxation processes in the first excited state of the investigated fluorene molecules affect the lifetimes of these states, τ1, so that experimental values of τ1 do not correspond to those calculated by Strickler and Berg theory. The influence of the molecular concentration on the fluorescence quantum yields and τ1 have been investigated.",

keywords = "Anisotropy, Fluorescence lifetime, Steady-state spectroscopy",

author = "Belfield, \{Kevin D.\} and Bondar, \{Mikhailo V.\} and Przhonska, \{Olga V.\} and Schafer, \{Katherine J.\}",

note = "Funding Information: We wish to acknowledge the donors of Petroleum Research Fund of the ACS, Research Corporation (Cottrell College Science Award), National Science Foundation (DMR-9975773, ECS-9970078, and ECS-9976630), National Research Council (COBASE), and the University of Central Florida (Presidential Research Equipment Initiative) for support for this work. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",

year = "2002",

month = dec,

doi = "10.1023/A:1021322228428",

language = "English (US)",

volume = "12",

pages = "449--454",

journal = "Journal of Fluorescence",

issn = "1053-0509",

publisher = "Springer",

number = "3-4",

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TY - JOUR

T1 - Steady-State Spectroscopic and Fluorescence Lifetime Measurements of New Two-Photon Absorbing Fluorene Derivatives

AU - Belfield, Kevin D.

AU - Bondar, Mikhailo V.

AU - Przhonska, Olga V.

AU - Schafer, Katherine J.

N1 - Funding Information: We wish to acknowledge the donors of Petroleum Research Fund of the ACS, Research Corporation (Cottrell College Science Award), National Science Foundation (DMR-9975773, ECS-9970078, and ECS-9976630), National Research Council (COBASE), and the University of Central Florida (Presidential Research Equipment Initiative) for support for this work. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2002/12

Y1 - 2002/12

N2 - Steady-state excitation anisotropy, lifetimes, and time-resolved emission spectra of new 2-photon absorbing fluorene derivatives were measured in aprotic solvents at room temperature. Excitation anisotropy spectra in viscous silicon oil allowed the determination of the spectral position cf three electronic transitions S0 → S1, S0 → S 2, S0 → S3 (Si i = 1, 2, 3 are the singlet electronic states) and the angles (∼ 30°) between absorption S0 → S1 and emission S1 → S 0 dipole moments for the first electronic transition. Solvate relaxation processes in the first excited state of the investigated fluorene molecules affect the lifetimes of these states, τ1, so that experimental values of τ1 do not correspond to those calculated by Strickler and Berg theory. The influence of the molecular concentration on the fluorescence quantum yields and τ1 have been investigated.

AB - Steady-state excitation anisotropy, lifetimes, and time-resolved emission spectra of new 2-photon absorbing fluorene derivatives were measured in aprotic solvents at room temperature. Excitation anisotropy spectra in viscous silicon oil allowed the determination of the spectral position cf three electronic transitions S0 → S1, S0 → S 2, S0 → S3 (Si i = 1, 2, 3 are the singlet electronic states) and the angles (∼ 30°) between absorption S0 → S1 and emission S1 → S 0 dipole moments for the first electronic transition. Solvate relaxation processes in the first excited state of the investigated fluorene molecules affect the lifetimes of these states, τ1, so that experimental values of τ1 do not correspond to those calculated by Strickler and Berg theory. The influence of the molecular concentration on the fluorescence quantum yields and τ1 have been investigated.

KW - Anisotropy

KW - Fluorescence lifetime

KW - Steady-state spectroscopy

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UR - https://www.scopus.com/pages/publications/1942518754#tab=citedBy

U2 - 10.1023/A:1021322228428

DO - 10.1023/A:1021322228428

M3 - Article

AN - SCOPUS:1942518754

SN - 1053-0509

VL - 12

SP - 449

EP - 454

JO - Journal of Fluorescence

JF - Journal of Fluorescence

IS - 3-4

ER -

Steady-State Spectroscopic and Fluorescence Lifetime Measurements of New Two-Photon Absorbing Fluorene Derivatives

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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