DataVXACS NanoPaper
journal article·2022-02-22Open access

Chiral Helices Formation by Self-Assembled Molecules on Semiconductor Flexible Substrates

Hong Po, Corentin Dabard, Benoit Roman, Etienne Reyssat, José Bico, Benoit Baptiste, Emmanuel Lhuillier, Sandrine Ithurria

ACS Nano· Volume 16· Issue 2
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Source abstract

Abstract

The crystal structure of atomically defined colloidal II-VI semiconductor nanoplatelets (NPLs) induces the self-assembly of organic ligands over thousands of square nanometers on the top and bottom basal planes of these anisotropic nanoparticles. NPLs curl into helices under the influence of the surface stress induced by these ligands. We demonstrate the control of the radii of NPL helices through the ligands described as an anchoring group and an aliphatic chain of a given length. A mechanical model accounting for the misfit strain between the inorganic core and the surface ligands predicts the helices' radii. We show how the chirality of the helices can be tuned by the ligands anchoring group and inverted from one population to another.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsElectronic materials

OpenAlex topics: Supramolecular Self-Assembly in Materials · Liquid Crystal Research Advancements · Advanced Materials and Mechanics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Laboratoire de Physique et d’Etude des Matériaux, ESPCI-Paris, PSL Research University, Sorbonne Université UPMC Univ Paris 06, CNRS, 10 rue Vauquelin 75005 Paris, France

Physique et Mécanique des Milieux Hétérogènes, ESPCI-Paris, PSL Research University, CNRS, Sorbonne Université, Université de Paris, 75005 Paris, France

Sorbonne Université, CNRS, Institut de minéralogie, de physique des matériaux et de cosmochimie, IMPMC, F-75005 Paris, France

Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, F-75005 Paris, France

Funding

H2020 European Research Council

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