Supramolecular Induction of Topological Chirality from Nanoscale Helical Silica Scaffolds to Achiral Molecular Chromophores
| Autor: | Reiko Oda, Antoine Scalabre, Dario M. Bassani, Ana M. Gutiérrez-Vílchez, Ángela Sastre-Santos, Fernando Fernández-Lázaro |
|---|---|
| Přispěvatelé: | Centre National de la Recherche Scientifique (CNRS), Institut des Sciences Moléculaires (ISM), Université Montesquieu - Bordeaux 4-Université Sciences et Technologies - Bordeaux 1-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
inorganic chemicals
Materials science High Energy Physics::Lattice Supramolecular chemistry 02 engineering and technology 010402 general chemistry Topology 01 natural sciences chemistry.chemical_compound polycyclic compounds Physics::Atomic and Molecular Clusters [CHIM]Chemical Sciences heterocyclic compounds Physics::Chemical Physics Physical and Theoretical Chemistry Nanoscopic scale organic chemicals High Energy Physics::Phenomenology technology industry and agriculture Perylene derivatives Chromophore 021001 nanoscience & nanotechnology Small molecule 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials General Energy chemistry health occupations Pyrene 0210 nano-technology Chirality (chemistry) Chiral induction |
| Zdroj: | Journal of Physical Chemistry C Journal of Physical Chemistry C, American Chemical Society, 2020, 124 (43), pp.23839-23843. ⟨10.1021/acs.jpcc.0c06847⟩ |
| ISSN: | 1932-7447 1932-7455 |
| DOI: | 10.1021/acs.jpcc.0c06847⟩ |
| Popis: | International audience; Chiral induction from macroscopic objects possessing topological chirality to small molecules is demonstrated using nonchiral organic chromophores based on pyrene and perylene derivatives covalently grafted onto nanometric silica helices. The grafted chromophores are found to display induced chiroptical signals despite the absence of asymmetric atoms. The observed chiral induction is attributed to supramolecular chiral organization of the chromophores on the helical silica surface as evidenced by the variation of the induced circular dichroism signal with increasing surface density of the achiral chromophore. The magnitude of the induced chiroptical signals increases exponentially with the grafting density of the chromophores, suggesting that chiral induction occurs cooperatively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|