UNIQUE NON SELF-LUMINESCENCE QUENCHING BEHAVIOR OF CATIONIC Pt(IV)PORPHYRIN ON CLAY SURFACE

Kyosuke Arakawa; Kanpei Suzuki; Ryosuke Nakazato; Yugo Hirade; Tetsuya Shimada; Tamao Ishida; Tatsuto Yui; Shinsuke Takagi

doi:10.11362/jcssjclayscience.MS-21-6

Papers

UNIQUE NON SELF-LUMINESCENCE QUENCHING BEHAVIOR OF CATIONIC Pt(IV)PORPHYRIN ON CLAY SURFACE

Kyosuke Arakawa, Kanpei Suzuki, Ryosuke Nakazato, Yugo Hirade, Tetsuya Shimada, Tamao Ishida, Tatsuto Yui, Shinsuke Takagi

Author information

Kyosuke Arakawa
Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
Kanpei Suzuki
Department of Applied Chemistry for Environment, Faculty of Urban Environmental Sciences, Tokyo Metropolitan University
Ryosuke Nakazato
Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
Yugo Hirade
Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
Tetsuya Shimada
Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
Research Center for Hydrogen Energy-based Society (ReHES), Tokyo Metropolitan University
Tamao Ishida
Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
Research Center for Hydrogen Energy-based Society (ReHES), Tokyo Metropolitan University
Tatsuto Yui
Department of Material Science and Technology, Faculty of Engineering, and Center for Transdisciplinary Research, Niigata University
Shinsuke Takagi Corresponding author
Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
Research Center for Hydrogen Energy-based Society (ReHES), Tokyo Metropolitan University

Keywords: saponite nanosheet, Pt porphyrin, adsorption, phosphorescence, self-quenching

JOURNAL FREE ACCESS

2021 Volume 25 Issue 3-4 Pages 27-31

DOI https://doi.org/10.11362/jcssjclayscience.MS-21-6

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Abstract

Adsorption and photochemical behavior of Pt(II)meso-tetra(N-methyl-4-pyridinium)porphyrin (PtTMPyP) on clay (saponite) nanosheet surface were investigated. PtTMPyP was adsorbed up to 70% vs. cation exchange capacity (CEC) of clay nanosheet. It was turned out that the phosphorescence of PtTMPyP was enhanced by the adsorption on the clay surface compared to that in water. These results can be understood as Surface-Fixation Induced Emission (S-FIE) phenomenon. In addition, interestingly, PtTMPyP showed non self-phosphorescence quenching behavior on the clay nanosheet surface even under the high density adsorption conditions up to 80% vs. CEC. This unique phenomenon was discussed by a comparison with Zn(II)meso-tetra(N-methyl-4-pyridinium)porphyrin (ZnTMPyP) as a reference dye.

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