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Induced circular dichroism from helicoidal nano substrates to porphyrins: The role of chiral self-assembly

hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorDUROUX, Gautier
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorROBIN, Lucas
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorLIU, Peizhao
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorDOLS, Emilie
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorMATHEUS DE SOUZA, Lima Mendes
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBUFFIERE, Sonia
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorPARDIEU, Elodie
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorSCALABRE, Antoine
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorBUFFETEAU, Thierry
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorNLATE, Sylvain
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorODA, Reiko
hal.structure.identifierLaboratoire national des champs magnétiques intenses - Grenoble [LNCMI-G ]
dc.contributor.authorRAJU, Maria
hal.structure.identifierLaboratoire national des champs magnétiques intenses - Grenoble [LNCMI-G ]
dc.contributor.authorATZORI, Matteo
hal.structure.identifierLaboratoire national des champs magnétiques intenses - Grenoble [LNCMI-G ]
dc.contributor.authorTRAIN, Cyrille
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorHILLARD, Elisabeth A.
hal.structure.identifierLaboratoire national des champs magnétiques intenses - Grenoble [LNCMI-G ]
dc.contributor.authorG.L.J.A., Rikken
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorROSA, Patrick
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorPOUGET, Emilie
dc.date.issued2023
dc.identifier.issn2040-3364
dc.description.abstractEnBecause the combination of chiral and magnetic properties is becoming more and more attractive for magneto-chiral phenomena, we here aim at exploring the induction of chirality to achiral magnetic molecules as a strategy for the preparation of magneto-chiral objects. To this end, we have associated free baseand metallo-porphyrins with silica nano helices, using a variety of elaboration methods and studied them mainly by electronic natural circular dichroism (NCD) and magnetic circular dichroism (MCD) spectroscopies. While electrostatic or covalent surface grafting uniformly yielded very low induced CD (ICD) for the four assayed porphyrins, a moderate response was observed when the porphyrins were incorporated into the interior of the double-walled helices, likely due to the association of the molecules with the chirally-organized gemini surfactant in the helices' interior. A generally stronger, but more variable, ICD was observed when the molecules were drop casted onto the helices immobilised on a quartz plate, likely due to the different capacities of the porphyrins to aggregate into chiral assemblies. Electronic spectroscopy, electron microscopy and IR spectroscopy were used to interpret the patterns of aggregation and their influence on ICD and MCD. No enhancement of MCD was observed as a result of association with the nanohelices except in the case of the free base, 5,10,15,20-tetra-(4-sulfonatophenyl)porphyrin (TPPS). This nanocomposite demonstrated a large ICD in the Soret region and a large MCD in the Q-region due to J-aggregation. However, no induced MChD was observed, possibly due to the spectral mismatch between the ICD and MCD peaks.
dc.description.sponsorshipNanocomposites hélicoïdaux pour l'induction de dichroïsme magnéto-chiral - ANR-19-CE09-0018
dc.description.sponsorshipInitiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.title.enInduced circular dichroism from helicoidal nano substrates to porphyrins: The role of chiral self-assembly
dc.typeArticle de revue
dc.identifier.doi10.1039/d3nr02670a
dc.subject.halChimie/Chimie de coordination
dc.subject.halChimie/Chimie théorique et/ou physique
bordeaux.journalNanoscale
bordeaux.page12095-12104
bordeaux.volume15
bordeaux.issue28
bordeaux.peerReviewedoui
hal.identifierhal-04160344
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04160344v1
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