Electrochemistry, spectroscopy, and electrogenerated chemiluminescence of some star-shaped truxene-oligofluorene compounds

Khalid M. Omer, Alexander L. Kanibolotsky, Peter Skabara, Igor F. Perepichka, Allen J. Bard

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

We report electrochemical studies, spectroscopy, and electrogenerated chemiluminescence (ECL) of four monodisperse star-shaped truxene core−oligofluorene compounds (T1−T4). All oligomers produced stable radical anions and radical cations and showed blue ECL by ion annihilation with an intensity that could be seen with the naked eye. ECL spectra showed that all ECL emissions were at the same position as the fluorescence emission, except for T1, the compound with the shortest fluorene arms that produced some longer wavelength emission in addition to that seen in the fluorescence spectrum. When tetra-n-butylammonium oxalate was used as a coreactant for T1, the emission was much weaker than that in ion annihilation with the same long-wavelength emission observed, making it unlikely that this emission can be ascribed to excimer formation. The ECL intensity of T4 was about 80% of the common blue ECL emitter, 9,10-diphenylanthracene (DPA), under similar conditions.
LanguageUndefined/Unknown
Pages6612-6619
Number of pages8
JournalJournal of Physical Chemistry B
Volume111
Issue number24
DOIs
Publication statusPublished - 21 Jun 2007

Keywords

  • electrochemistry
  • spectroscopy
  • electrogenerated chemiluminescence
  • truxene-oligofluorene compounds

Cite this

Omer, Khalid M. ; Kanibolotsky, Alexander L. ; Skabara, Peter ; Perepichka, Igor F. ; Bard, Allen J. / Electrochemistry, spectroscopy, and electrogenerated chemiluminescence of some star-shaped truxene-oligofluorene compounds. In: Journal of Physical Chemistry B. 2007 ; Vol. 111, No. 24. pp. 6612-6619.
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title = "Electrochemistry, spectroscopy, and electrogenerated chemiluminescence of some star-shaped truxene-oligofluorene compounds",
abstract = "We report electrochemical studies, spectroscopy, and electrogenerated chemiluminescence (ECL) of four monodisperse star-shaped truxene core−oligofluorene compounds (T1−T4). All oligomers produced stable radical anions and radical cations and showed blue ECL by ion annihilation with an intensity that could be seen with the naked eye. ECL spectra showed that all ECL emissions were at the same position as the fluorescence emission, except for T1, the compound with the shortest fluorene arms that produced some longer wavelength emission in addition to that seen in the fluorescence spectrum. When tetra-n-butylammonium oxalate was used as a coreactant for T1, the emission was much weaker than that in ion annihilation with the same long-wavelength emission observed, making it unlikely that this emission can be ascribed to excimer formation. The ECL intensity of T4 was about 80{\%} of the common blue ECL emitter, 9,10-diphenylanthracene (DPA), under similar conditions.",
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year = "2007",
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Electrochemistry, spectroscopy, and electrogenerated chemiluminescence of some star-shaped truxene-oligofluorene compounds. / Omer, Khalid M.; Kanibolotsky, Alexander L.; Skabara, Peter; Perepichka, Igor F.; Bard, Allen J.

In: Journal of Physical Chemistry B, Vol. 111, No. 24, 21.06.2007, p. 6612-6619.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Electrochemistry, spectroscopy, and electrogenerated chemiluminescence of some star-shaped truxene-oligofluorene compounds

AU - Omer, Khalid M.

AU - Kanibolotsky, Alexander L.

AU - Skabara, Peter

AU - Perepichka, Igor F.

AU - Bard, Allen J.

PY - 2007/6/21

Y1 - 2007/6/21

N2 - We report electrochemical studies, spectroscopy, and electrogenerated chemiluminescence (ECL) of four monodisperse star-shaped truxene core−oligofluorene compounds (T1−T4). All oligomers produced stable radical anions and radical cations and showed blue ECL by ion annihilation with an intensity that could be seen with the naked eye. ECL spectra showed that all ECL emissions were at the same position as the fluorescence emission, except for T1, the compound with the shortest fluorene arms that produced some longer wavelength emission in addition to that seen in the fluorescence spectrum. When tetra-n-butylammonium oxalate was used as a coreactant for T1, the emission was much weaker than that in ion annihilation with the same long-wavelength emission observed, making it unlikely that this emission can be ascribed to excimer formation. The ECL intensity of T4 was about 80% of the common blue ECL emitter, 9,10-diphenylanthracene (DPA), under similar conditions.

AB - We report electrochemical studies, spectroscopy, and electrogenerated chemiluminescence (ECL) of four monodisperse star-shaped truxene core−oligofluorene compounds (T1−T4). All oligomers produced stable radical anions and radical cations and showed blue ECL by ion annihilation with an intensity that could be seen with the naked eye. ECL spectra showed that all ECL emissions were at the same position as the fluorescence emission, except for T1, the compound with the shortest fluorene arms that produced some longer wavelength emission in addition to that seen in the fluorescence spectrum. When tetra-n-butylammonium oxalate was used as a coreactant for T1, the emission was much weaker than that in ion annihilation with the same long-wavelength emission observed, making it unlikely that this emission can be ascribed to excimer formation. The ECL intensity of T4 was about 80% of the common blue ECL emitter, 9,10-diphenylanthracene (DPA), under similar conditions.

KW - electrochemistry

KW - spectroscopy

KW - electrogenerated chemiluminescence

KW - truxene-oligofluorene compounds

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