Fluorescence quenching of water-soluble porphyrins. A novel fluorescence quenching of anionic porphyrin by anionic anthraquinone

Koji Kano, Toshinori Sato, Sunao Yamada, Telichiro Ogawa

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The fluorescence quenching of 5-phenyl-10,15,20-tris(p-sulfonatophenyl)porphine (TPPS3-) and 5,10,15,20-tetrakis(4-N-methylpyridyl)porphine (TMPyP4+) has been studied in water (pH 8.0) by using 9,10-anthraquinone-2,6-disulfonate (AQDS2-) and methyl viologen (MV2+) as quenchers. While electrostatic repulsion is expected, AQDS2- quenched the TPPS3- fluorescence more efficiently than MV2+. The steady-state and time-resolved fluorescence measurements indicated that static quenching took place in the TPPS3--AQDS2- system. Studies on the absorption spectra and the effects of ionic strength on the fluorescence quenching indicated the formation of the ground-state complex of TPPS3- and AQDS2-. The thermodynamic parameters (ΔH and ΔS) suggested that the ground-state complex was formed via van der Waals interaction.

Original languageEnglish
Pages (from-to)566-569
Number of pages4
JournalJournal of Physical Chemistry
Volume87
Issue number4
DOIs
Publication statusPublished - Jan 1 1983

Fingerprint

Anthraquinones
anthraquinones
Porphyrins
porphyrins
Quenching
Fluorescence
quenching
fluorescence
Water
Ground state
water
Paraquat
ground state
Ionic strength
Absorption spectra
Electrostatics
Thermodynamics
electrostatics
absorption spectra
thermodynamics

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physical and Theoretical Chemistry

Cite this

Fluorescence quenching of water-soluble porphyrins. A novel fluorescence quenching of anionic porphyrin by anionic anthraquinone. / Kano, Koji; Sato, Toshinori; Yamada, Sunao; Ogawa, Telichiro.

In: Journal of Physical Chemistry, Vol. 87, No. 4, 01.01.1983, p. 566-569.

Research output: Contribution to journalArticle

Kano, Koji ; Sato, Toshinori ; Yamada, Sunao ; Ogawa, Telichiro. / Fluorescence quenching of water-soluble porphyrins. A novel fluorescence quenching of anionic porphyrin by anionic anthraquinone. In: Journal of Physical Chemistry. 1983 ; Vol. 87, No. 4. pp. 566-569.
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N2 - The fluorescence quenching of 5-phenyl-10,15,20-tris(p-sulfonatophenyl)porphine (TPPS3-) and 5,10,15,20-tetrakis(4-N-methylpyridyl)porphine (TMPyP4+) has been studied in water (pH 8.0) by using 9,10-anthraquinone-2,6-disulfonate (AQDS2-) and methyl viologen (MV2+) as quenchers. While electrostatic repulsion is expected, AQDS2- quenched the TPPS3- fluorescence more efficiently than MV2+. The steady-state and time-resolved fluorescence measurements indicated that static quenching took place in the TPPS3--AQDS2- system. Studies on the absorption spectra and the effects of ionic strength on the fluorescence quenching indicated the formation of the ground-state complex of TPPS3- and AQDS2-. The thermodynamic parameters (ΔH and ΔS) suggested that the ground-state complex was formed via van der Waals interaction.

AB - The fluorescence quenching of 5-phenyl-10,15,20-tris(p-sulfonatophenyl)porphine (TPPS3-) and 5,10,15,20-tetrakis(4-N-methylpyridyl)porphine (TMPyP4+) has been studied in water (pH 8.0) by using 9,10-anthraquinone-2,6-disulfonate (AQDS2-) and methyl viologen (MV2+) as quenchers. While electrostatic repulsion is expected, AQDS2- quenched the TPPS3- fluorescence more efficiently than MV2+. The steady-state and time-resolved fluorescence measurements indicated that static quenching took place in the TPPS3--AQDS2- system. Studies on the absorption spectra and the effects of ionic strength on the fluorescence quenching indicated the formation of the ground-state complex of TPPS3- and AQDS2-. The thermodynamic parameters (ΔH and ΔS) suggested that the ground-state complex was formed via van der Waals interaction.

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