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

Chih-Wei Chang, Theis I. Sølling, Eric Wei Guang Diau

Research output: Contribution to journalArticle

7 Citations (Scopus)

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 languageEnglish
Pages (from-to)218-222
Number of pages5
JournalChemical Physics Letters
Volume686
DOIs
Publication statusPublished - 2017 Oct 16

Fingerprint

Fluorescence
fluorescence
Gases
vapor phases
life (durability)
Potential energy surfaces
internal conversion
Hexanes
molecular relaxation
Dimethyl Sulfoxide
Relaxation time
acetonitrile
Mass spectrometry
mass spectroscopy
relaxation time
potential energy
Spectroscopy
spectroscopy
9-fluorenone

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

@article{3de1a45b395a474c878dc0abc2b47106,
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.",
author = "Chih-Wei Chang and S{\o}lling, {Theis I.} and Diau, {Eric Wei Guang}",
year = "2017",
month = "10",
day = "16",
doi = "10.1016/j.cplett.2017.07.039",
language = "English",
volume = "686",
pages = "218--222",
journal = "Chemical Physics Letters",
issn = "0009-2614",
publisher = "Elsevier",

}

Revisiting the photophysics of 9-fluorenone : Ultrafast time-resolved fluorescence and theoretical studies. / Chang, Chih-Wei; Sølling, Theis I.; Diau, Eric Wei Guang.

In: Chemical Physics Letters, Vol. 686, 16.10.2017, p. 218-222.

Research output: Contribution to journalArticle

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.

UR - http://www.scopus.com/inward/record.url?scp=85026193901&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85026193901&partnerID=8YFLogxK

U2 - 10.1016/j.cplett.2017.07.039

DO - 10.1016/j.cplett.2017.07.039

M3 - Article

AN - SCOPUS:85026193901

VL - 686

SP - 218

EP - 222

JO - Chemical Physics Letters

JF - Chemical Physics Letters

SN - 0009-2614

ER -