Journal Articles Nanoscale Year : 2025

Porphyrin J-aggregates as a probe for chiral impurities as demonstrated by their symmetry breaking by confinement in montmorillonite clay

Abstract

In this paper, we demonstrate that chiral J-aggregates of porphyrins are able to detect minute chiral impurities, in this case, the presence of right-handed quartz in acid-activated K10 montmorillonite clay. Aggregation and symmetry breaking of 5,10,15,20-(tetra-4-carboxyphenyl) porphyrin (TCPP) and 5,10,15,20-(tetra-4-sulfonatophenyl) porphyrin (TPPS) were observed upon interaction with acid-activated montmorillonite clay (MMT-K10). A panel of characterization techniques, including UV-visible, electronic circular dichroism, IR, and vibrational circular dichroism spectroscopies, as well as X-ray scattering, were employed to investigate the aggregation of the confined TPPS and TCPP. An intriguing and persistent negative exciton effect was detected in the electronic circular dichroism spectra at the early stages of J-aggregation. The enrichment of a right-handed quartz impurity in the clay detected by vibrational circular dichroism may explain the symmetry breaking in the porphyrin assemblies. As a result, we propose that chiral porphyrin aggregates could serve as innovative probes for detecting subtle chirality in inorganic nanomaterials.
Embargoed file
Embargoed file
Embargoed file
0 3 0
Year Month Jours
Avant la publication
Monday, May 19, 2025
Embargoed file
0 3 0
Year Month Jours
Avant la publication
Monday, May 19, 2025
Recherche Data Gouv

Cites 10.57745/ZGK7PI Dataset Hillard, Elizabeth; de Souza Lima Mendes, Matheus; Duroux, Gautier; Boudier, Anthony; Pranee, Piyanan; Okazaki, Yutaka; Buffeteau, Thierry; Massip, Stéphane; Nlate, Sylvain; Oda, Reiko; Pouget, Emilie, 2025, "Porphyrin J-aggregates as a probe for chiral impurities as demonstrated by their symmetry breaking by confinement into montmorillonite clay", https://doi.org/10.57745/ZGK7PI, Recherche Data Gouv, V1

Embargoed file
Monday, May 19, 2025
Please log in to request access to the document

Dates and versions

hal-04837648 , version 1 (16-12-2024)

Identifiers

Cite

Matheus de Souza Lima Mendes, Gautier Duroux, Anthony Boudier, Piyanan Pranee, Yutaka Okazaki, et al.. Porphyrin J-aggregates as a probe for chiral impurities as demonstrated by their symmetry breaking by confinement in montmorillonite clay. Nanoscale, 2025, 17 (3), pp.1334-1341. ⟨10.1039/D4NR03728F⟩. ⟨hal-04837648⟩
75 View
0 Download

Altmetric

Share

More