Shift from an inverse to a normal isotope effect on the non-radiative decay rate of anthracene-d10 observed under partially jet-cooled conditions

Hiromichi Niikura, Satoshi Hirayama

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The absorption and fluorescence excitation spectra of anthracene-d10 in the first excited singlet state were measured under partially jet-cooled conditions. From the ratio of the corresponding peak intensities of both spectra the fluorescence quantum yields were evaluated for a few sequence bands as well as single vibronic levels. In contrast to the case of anthracene-h10, the values for the sequence bands (Φf=0.17-0.24) exceed that of the 00 0 band (Φf=0.13), suggesting a resume of normal isotope effect on intersystem crossing. This novel finding is discussed in relation to the fluorescence lifetimes of anthracene-d10 measured in the gas phase.

Original languageEnglish
Pages (from-to)343-349
Number of pages7
JournalChemical Physics Letters
Volume296
Issue number3-4
Publication statusPublished - 1998 Nov 6
Externally publishedYes

Fingerprint

anthracene
Isotopes
isotope effect
decay rates
Fluorescence
fluorescence
shift
Quantum yield
Excited states
excitation
Gases
vapor phases
life (durability)

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

Cite this

@article{690ac547cbbc4dac892f9a78c9b28f4d,
title = "Shift from an inverse to a normal isotope effect on the non-radiative decay rate of anthracene-d10 observed under partially jet-cooled conditions",
abstract = "The absorption and fluorescence excitation spectra of anthracene-d10 in the first excited singlet state were measured under partially jet-cooled conditions. From the ratio of the corresponding peak intensities of both spectra the fluorescence quantum yields were evaluated for a few sequence bands as well as single vibronic levels. In contrast to the case of anthracene-h10, the values for the sequence bands (Φf=0.17-0.24) exceed that of the 00 0 band (Φf=0.13), suggesting a resume of normal isotope effect on intersystem crossing. This novel finding is discussed in relation to the fluorescence lifetimes of anthracene-d10 measured in the gas phase.",
author = "Hiromichi Niikura and Satoshi Hirayama",
year = "1998",
month = "11",
day = "6",
language = "English",
volume = "296",
pages = "343--349",
journal = "Chemical Physics Letters",
issn = "0009-2614",
publisher = "Elsevier",
number = "3-4",

}

TY - JOUR

T1 - Shift from an inverse to a normal isotope effect on the non-radiative decay rate of anthracene-d10 observed under partially jet-cooled conditions

AU - Niikura, Hiromichi

AU - Hirayama, Satoshi

PY - 1998/11/6

Y1 - 1998/11/6

N2 - The absorption and fluorescence excitation spectra of anthracene-d10 in the first excited singlet state were measured under partially jet-cooled conditions. From the ratio of the corresponding peak intensities of both spectra the fluorescence quantum yields were evaluated for a few sequence bands as well as single vibronic levels. In contrast to the case of anthracene-h10, the values for the sequence bands (Φf=0.17-0.24) exceed that of the 00 0 band (Φf=0.13), suggesting a resume of normal isotope effect on intersystem crossing. This novel finding is discussed in relation to the fluorescence lifetimes of anthracene-d10 measured in the gas phase.

AB - The absorption and fluorescence excitation spectra of anthracene-d10 in the first excited singlet state were measured under partially jet-cooled conditions. From the ratio of the corresponding peak intensities of both spectra the fluorescence quantum yields were evaluated for a few sequence bands as well as single vibronic levels. In contrast to the case of anthracene-h10, the values for the sequence bands (Φf=0.17-0.24) exceed that of the 00 0 band (Φf=0.13), suggesting a resume of normal isotope effect on intersystem crossing. This novel finding is discussed in relation to the fluorescence lifetimes of anthracene-d10 measured in the gas phase.

UR - http://www.scopus.com/inward/record.url?scp=0007457207&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0007457207&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0007457207

VL - 296

SP - 343

EP - 349

JO - Chemical Physics Letters

JF - Chemical Physics Letters

SN - 0009-2614

IS - 3-4

ER -