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

IF 5.8 3区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nanoscale Pub Date : 2024-11-19 DOI:10.1039/d4nr03728f

Matheus de Souza Lima Mendes, Gautier Duroux, Anthony Boudier, Piyanan Pranee, Yutaka Okazaki, Thierry Buffeteau, Stephane Massip, Sylvain Nlate, Reiko Oda, Elizabeth A. Hillard, Emilie Pouget

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引用次数: 0

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 during their 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.

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卟啉 J-聚合体作为手性杂质的探针，通过其在蒙脱石粘土中的约束而打破对称性得到证明

在本文中，我们证明了卟啉的手性 J-聚合体能够检测到微小的手性杂质，在本例中，酸活化的 K10 蒙脱石粘土中存在右旋石英。在 5,10,15,20-（四-4-羧基苯基）卟啉（TCPP）和 5,10,15,20-（四-4-磺酸苯基）卟啉（TPPS）与酸活化蒙脱石粘土（MMT-K10）相互作用的过程中，观察到了它们的聚集和对称性破坏。研究人员采用了一系列表征技术，包括紫外-可见光光谱、电子圆二色光谱、红外光谱、振动圆二色光谱以及 X 射线散射，来研究约束 TPPS 和 TCPP 的聚集。在 J 聚合的早期阶段，电子圆二色光谱中发现了一种有趣而持久的负激子效应。振动圆二色性检测到粘土中富含右旋石英杂质，这可以解释卟啉组装中的对称性破坏。因此，我们认为手性卟啉聚集体可作为创新探针，用于检测无机纳米材料中微妙的手性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nanoscale CHEMISTRY, MULTIDISCIPLINARY-NANOSCIENCE & NANOTECHNOLOGY

CiteScore

12.10

自引率

3.00%

发文量

1628

审稿时长

1.6 months

期刊介绍： Nanoscale is a high-impact international journal, publishing high-quality research across nanoscience and nanotechnology. Nanoscale publishes a full mix of research articles on experimental and theoretical work, including reviews, communications, and full papers.Highly interdisciplinary, this journal appeals to scientists, researchers and professionals interested in nanoscience and nanotechnology, quantum materials and quantum technology, including the areas of physics, chemistry, biology, medicine, materials, energy/environment, information technology, detection science, healthcare and drug discovery, and electronics.