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Título

Chiral templating of self-assembling nanostructures by circularly polarized light

AutorYeom, Jihyeon; Chuvilin, Andrey; Melnikau, D. ; Rogach, Andrey L.; Kotov, Nicholas A.
Fecha de publicación2015
EditorNature Publishing Group
CitaciónNature Materials 14(1): 66-72 (2015)
ResumenThe high optical and chemical activity of nanoparticles (NPs) signifies the possibility of converting the spin angular momenta of photons into structural changes in matter. Here, we demonstrate that illumination of dispersions of racemic CdTe NPs with right- (left-)handed circularly polarized light (CPL) induces the formation of right- (left-)handed twisted nanoribbons with an enantiomeric excess exceeding 30%, which is â 1/410 times higher than that of typical CPL-induced reactions. Linearly polarized light or dark conditions led instead to straight nanoribbons. CPL templating of NP assemblies is based on the enantio-selective photoactivation of chiral NPs and clusters, followed by their photooxidation and self-assembly into nanoribbons with specific helicity as a result of chirality-sensitive interactions between the NPs. The ability of NPs to retain the polarization information of incident photons should open pathways for the synthesis of chiral photonic materials and allow a better understanding of the origins of biomolecular homochirality.
DescripciónPMCID: PMC4387888.-- et al.
Versión del editorhttp://dx.doi.org/10.1038/nmat4125
URIhttp://hdl.handle.net/10261/136329
DOI10.1038/nmat4125
Identificadoresdoi: 10.1038/nmat4125
e-issn: 1476-4660
issn: 1476-1122
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