Journal
NANO LETTERS
Volume 20, Issue 12, Pages 8453-8460Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.0c02013
Keywords
Silica nanohelices; Perovskite nanocrystals; Chirality induction; Circular dichroism; Circularly polarized luminescence
Categories
Funding
- France-Japan International Associated Laboratory, Chiral Nanostructures for Photonic Applications (LIA-CNPA)
- Centre National de la Recherche Scientifique
- JSPS Overseas Research Fellowship
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy [EXC 2089/1-390776260]
- Chinese Scholarship Council (CSC)
- Universite de Bordeaux
Ask authors/readers for more resources
Perovskite nanocrystals (PNCs) exhibit excellent absorption and luminescent properties. Inorganic silica right (or left) handed nanohelices are used as chiral templates to induce optically active properties to CsPbBr3 PNCs grafted on their surfaces. In suspension, PNCs grafted on the nanohelices do not show any detectable chiroptical properties. In contrast, in a dried film state, they show large circular dichroism (CD) and circularly polarized luminescence (CPL) signals with dissymmetric factor up to 6 x 10(-3). Grazing incidence X-ray scattering, tomography, and cryoelectron microscopy (EM) have shown closely and helically packed PNCs on the dried helices and much more loosely organized PNCs on helices in suspension. Simulations based on the coupled dipole method (CDM) demonstrate that the CD comes from the dipolar interaction between PNC assembled into a chiral structure and the CD decreases with the interparticle distance.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available