Revisiting the photophysics of 9-fluorenone: Ultrafast time-resolved fluorescence and theoretical studies

Chih Wei Chang; Theis I. Sølling; Eric Wei Guang Diau

doi:10.1016/j.cplett.2017.07.039

Revisiting the photophysics of 9-fluorenone: Ultrafast time-resolved fluorescence and theoretical studies

Chih Wei Chang^*
, Theis I. Sølling
, Eric Wei Guang Diau

^*Corresponding author for this work

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

19 Scopus citations

Abstract

Ultrafast intersystem crossing dynamics of fluorenone in gas and condensed phases were investigated by time-resolved mass spectrometry and fluorescence up-conversion spectroscopy. The former shows the ultrafast Franck-Condon relaxation and the internal conversion dynamics of isolated fluorenone in the gas phase. The latter reveals that the vibrational relaxation time is 2.2 ps and a 110 ps fluorescence lifetime of fluorenone in hexane. The fluorescence lifetime in acetonitrile and dimethylsulfoxide is 16 ns and 15.1 ns, respectively. The potential energy surface along the C[dbnd]O out of plane bending motion shows that this coordinate is important for ISC in both polar and non-polar solvents.

Original language	English
Pages (from-to)	218-222
Number of pages	5
Journal	Chemical Physics Letters
Volume	686
DOIs	https://doi.org/10.1016/j.cplett.2017.07.039
State	Published - 16 Oct 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 Elsevier B.V.

Keywords

Fluorenone
Intersystem crossing
Time-resolved fluorescence spectroscopy
Time-resolved mass spectroscopy

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

Access to Document

10.1016/j.cplett.2017.07.039

Cite this

@article{a08c6be8af464110b41a70608fac64cd,

title = "Revisiting the photophysics of 9-fluorenone: Ultrafast time-resolved fluorescence and theoretical studies",

abstract = "Ultrafast intersystem crossing dynamics of fluorenone in gas and condensed phases were investigated by time-resolved mass spectrometry and fluorescence up-conversion spectroscopy. The former shows the ultrafast Franck-Condon relaxation and the internal conversion dynamics of isolated fluorenone in the gas phase. The latter reveals that the vibrational relaxation time is 2.2 ps and a 110 ps fluorescence lifetime of fluorenone in hexane. The fluorescence lifetime in acetonitrile and dimethylsulfoxide is 16 ns and 15.1 ns, respectively. The potential energy surface along the C[dbnd]O out of plane bending motion shows that this coordinate is important for ISC in both polar and non-polar solvents.",

keywords = "Fluorenone, Intersystem crossing, Time-resolved fluorescence spectroscopy, Time-resolved mass spectroscopy",

author = "Chang, \{Chih Wei\} and S{\o}lling, \{Theis I.\} and Diau, \{Eric Wei Guang\}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = oct,

day = "16",

doi = "10.1016/j.cplett.2017.07.039",

language = "English",

volume = "686",

pages = "218--222",

journal = "Chemical Physics Letters",

issn = "0009-2614",

}

TY - JOUR

T1 - Revisiting the photophysics of 9-fluorenone

T2 - Ultrafast time-resolved fluorescence and theoretical studies

AU - Chang, Chih Wei

AU - Sølling, Theis I.

AU - Diau, Eric Wei Guang

PY - 2017/10/16

Y1 - 2017/10/16

N2 - Ultrafast intersystem crossing dynamics of fluorenone in gas and condensed phases were investigated by time-resolved mass spectrometry and fluorescence up-conversion spectroscopy. The former shows the ultrafast Franck-Condon relaxation and the internal conversion dynamics of isolated fluorenone in the gas phase. The latter reveals that the vibrational relaxation time is 2.2 ps and a 110 ps fluorescence lifetime of fluorenone in hexane. The fluorescence lifetime in acetonitrile and dimethylsulfoxide is 16 ns and 15.1 ns, respectively. The potential energy surface along the C[dbnd]O out of plane bending motion shows that this coordinate is important for ISC in both polar and non-polar solvents.

AB - Ultrafast intersystem crossing dynamics of fluorenone in gas and condensed phases were investigated by time-resolved mass spectrometry and fluorescence up-conversion spectroscopy. The former shows the ultrafast Franck-Condon relaxation and the internal conversion dynamics of isolated fluorenone in the gas phase. The latter reveals that the vibrational relaxation time is 2.2 ps and a 110 ps fluorescence lifetime of fluorenone in hexane. The fluorescence lifetime in acetonitrile and dimethylsulfoxide is 16 ns and 15.1 ns, respectively. The potential energy surface along the C[dbnd]O out of plane bending motion shows that this coordinate is important for ISC in both polar and non-polar solvents.

KW - Fluorenone

KW - Intersystem crossing

KW - Time-resolved fluorescence spectroscopy

KW - Time-resolved mass spectroscopy

UR - https://www.scopus.com/pages/publications/85026193901

U2 - 10.1016/j.cplett.2017.07.039

DO - 10.1016/j.cplett.2017.07.039

M3 - Article

AN - SCOPUS:85026193901

SN - 0009-2614

VL - 686

SP - 218

EP - 222

JO - Chemical Physics Letters

JF - Chemical Physics Letters

ER -

Revisiting the photophysics of 9-fluorenone: Ultrafast time-resolved fluorescence and theoretical studies

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this