Photochemical properties of (7-benzothiazol-2-yl-9, 9-didecylfluoren-2-yl)diphenylamine under one- and two-photon excitation

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

doi:10.1016/S1010-6030(03)00416-7

Photochemical properties of (7-benzothiazol-2-yl-9, 9-didecylfluoren-2-yl)diphenylamine under one- and two-photon excitation

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

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

40 Scopus citations

Abstract

The photochemical properties of the fluorene derivative (7-benzothiazol -2-yl-9,9-didecylfluoren-2-yl)diphenylamine (1) in hexane and CH₂Cl₂ were studied under linear (one-photon) and nonlinear (two-photon) excitation. The quantum yield of the photochemical reaction, Φ, for 1 in hexane was in the range (3.5-5)×10^-5 for one-photon excitation (UVGL-25 and Xe-lamps) and was nearly the same under two-photon excitation (femtosecond laser with pulse duration 120 fs, average power ∼10 mW, repetition rate f=1 kHz). The values of Φ in CH₂Cl₂ were (2.5-4)×10^-5 for one-photon excitation and increased 50-80 times under two-photon excitation. This increase can be explained by an additional one-photon absorption process from the first electronically excited state, resulting in the observed enhancement in photochemical decomposition.

Original language	English (US)
Pages (from-to)	569-574
Number of pages	6
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	162
Issue number	2-3
DOIs	https://doi.org/10.1016/S1010-6030(03)00416-7
State	Published - Mar 15 2004
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering
General Physics and Astronomy

Keywords

Fluorene derivatives
Photochemical quantum yield
Photodecomposition
Photostability
Two-photon excitation

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10.1016/S1010-6030(03)00416-7

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title = "Photochemical properties of (7-benzothiazol-2-yl-9, 9-didecylfluoren-2-yl)diphenylamine under one- and two-photon excitation",

abstract = "The photochemical properties of the fluorene derivative (7-benzothiazol -2-yl-9,9-didecylfluoren-2-yl)diphenylamine (1) in hexane and CH2Cl2 were studied under linear (one-photon) and nonlinear (two-photon) excitation. The quantum yield of the photochemical reaction, Φ, for 1 in hexane was in the range (3.5-5)×10-5 for one-photon excitation (UVGL-25 and Xe-lamps) and was nearly the same under two-photon excitation (femtosecond laser with pulse duration 120 fs, average power ∼10 mW, repetition rate f=1 kHz). The values of Φ in CH2Cl2 were (2.5-4)×10-5 for one-photon excitation and increased 50-80 times under two-photon excitation. This increase can be explained by an additional one-photon absorption process from the first electronically excited state, resulting in the observed enhancement in photochemical decomposition.",

keywords = "Fluorene derivatives, Photochemical quantum yield, Photodecomposition, Photostability, Two-photon excitation",

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

note = "Funding Information: We wish to acknowledge the donors of The Petroleum Research Fund of the American Chemical Society, the Research Corporation Cottrell College Science program, the National Research Council COBASE program, the National Science Foundation, and the University of Central Florida Presidential Initiative for Major Research Equipment for partial support of this work. ",

year = "2004",

month = mar,

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doi = "10.1016/S1010-6030(03)00416-7",

language = "English (US)",

volume = "162",

pages = "569--574",

journal = "Journal of Photochemistry and Photobiology A: Chemistry",

issn = "1010-6030",

publisher = "Elsevier B.V.",

number = "2-3",

}

TY - JOUR

T1 - Photochemical properties of (7-benzothiazol-2-yl-9, 9-didecylfluoren-2-yl)diphenylamine under one- and two-photon excitation

AU - Belfield, Kevin D.

AU - Bondar, Mykhailo V.

AU - Przhonska, Olga V.

AU - Schafer, Katherine J.

N1 - Funding Information: We wish to acknowledge the donors of The Petroleum Research Fund of the American Chemical Society, the Research Corporation Cottrell College Science program, the National Research Council COBASE program, the National Science Foundation, and the University of Central Florida Presidential Initiative for Major Research Equipment for partial support of this work.

PY - 2004/3/15

Y1 - 2004/3/15

N2 - The photochemical properties of the fluorene derivative (7-benzothiazol -2-yl-9,9-didecylfluoren-2-yl)diphenylamine (1) in hexane and CH2Cl2 were studied under linear (one-photon) and nonlinear (two-photon) excitation. The quantum yield of the photochemical reaction, Φ, for 1 in hexane was in the range (3.5-5)×10-5 for one-photon excitation (UVGL-25 and Xe-lamps) and was nearly the same under two-photon excitation (femtosecond laser with pulse duration 120 fs, average power ∼10 mW, repetition rate f=1 kHz). The values of Φ in CH2Cl2 were (2.5-4)×10-5 for one-photon excitation and increased 50-80 times under two-photon excitation. This increase can be explained by an additional one-photon absorption process from the first electronically excited state, resulting in the observed enhancement in photochemical decomposition.

AB - The photochemical properties of the fluorene derivative (7-benzothiazol -2-yl-9,9-didecylfluoren-2-yl)diphenylamine (1) in hexane and CH2Cl2 were studied under linear (one-photon) and nonlinear (two-photon) excitation. The quantum yield of the photochemical reaction, Φ, for 1 in hexane was in the range (3.5-5)×10-5 for one-photon excitation (UVGL-25 and Xe-lamps) and was nearly the same under two-photon excitation (femtosecond laser with pulse duration 120 fs, average power ∼10 mW, repetition rate f=1 kHz). The values of Φ in CH2Cl2 were (2.5-4)×10-5 for one-photon excitation and increased 50-80 times under two-photon excitation. This increase can be explained by an additional one-photon absorption process from the first electronically excited state, resulting in the observed enhancement in photochemical decomposition.

KW - Fluorene derivatives

KW - Photochemical quantum yield

KW - Photodecomposition

KW - Photostability

KW - Two-photon excitation

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DO - 10.1016/S1010-6030(03)00416-7

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SN - 1010-6030

VL - 162

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JO - Journal of Photochemistry and Photobiology A: Chemistry

JF - Journal of Photochemistry and Photobiology A: Chemistry

IS - 2-3

ER -

Photochemical properties of (7-benzothiazol-2-yl-9, 9-didecylfluoren-2-yl)diphenylamine under one- and two-photon excitation

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