Contradictory effects of acids on the photocatalytic activity and stability of different polymer supported meso-tetra(aryl)porphyrins: Unusual high stability of sterically hindered porphyrins towards core-protonation with acids

Deniz Chodari-Gharehpapagh; Saeed Zakavi

doi:10.1039/d5cp01770j

January 1, 2025Physical Chemistry Chemical Physics

Contradictory effects of acids on the photocatalytic activity and stability of different polymer supported meso-tetra(aryl)porphyrins: Unusual high stability of sterically hindered porphyrins towards core-protonation with acids

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Key Points

Sterically hindered porphyrins show unusual high stability when exposed to acids, enhancing their potential applications.
Characterization by UV–vis–NIR diffuse reflectance demonstrates the distinct photocatalytic behavior of various tetra-anionic porphyrins embedded in polymer supports.
The study assesses the effects of different acids on the stability of meso-tetra(aryl)porphyrins, focusing on their core-protonation responses.
Understanding these phenomena may help in developing more efficient photocatalytic systems in acidic environments.

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Implication

Analysis reveals contradictory stability and photocatalytic activity in polymer supported porphyrins, indicating unique responses to acidic environments.

Abstract

A series of tetra-anionic porphyrins including meso-tetrakis(4-sulfonatophenyl)porphyrin, H2TPPS4, meso-tetrakis(2-Cl-4-sulfonatophenyl)porphyrin, H2T(2-Cl)PPS4 and β-tetrabromo-meso-tetrakis(4-sulfonatophenyl)porphyrin, H2TPPBr4S4 embedded into the pores of porous nanostructured amberlite, nanoAmbN(Me)3Cl were prepared and characterized by UV–vis–NIR diffuse reflectance...

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Chodari-Gharehpapagh et al. (2025) studied this question.

synapsesocial.com/papers/68c183f89b7b07f3a060fcfd https://doi.org/10.1039/d5cp01770j

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Contradictory effects of acids on the photocatalytic activity and stability of different polymer supported meso-tetra(aryl)porphyrins: Unusual high stability of sterically hindered porphyrins towards core-protonation with acids

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Contradictory effects of acids on the photocatalytic activity and stability of different polymer supported meso-tetra(aryl)porphyrins: Unusual high stability of sterically hindered porphyrins towards core-protonation with acids

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