Neutron Scattering Reveals a Dynamic Surface Equilibrium onl-α-Lecithin Functionalized CsPbBr3 Nanocrystals
Wahl J, Zaluzhnyy I, Prevost S, Porcar L, Beck C, Matsarskaia O, Unruh T, Metwalli E, Schreiber F, Scheele M, Seydel T (2026)
Publication Type: Journal article
Publication year: 2026
Journal
Book Volume: 26
Pages Range: 8208-8216
Journal Issue: 25
DOI: 10.1021/acs.nanolett.6c01347
Abstract
Cesium lead bromide perovskite nanocrystals (NCs) covered with lecithin ligands in liquid toluene suspensions were investigated with a range of complementary scattering techniques and nuclear magnetic resonance to reveal their surface chemistry, solution structure, and diffusive dynamics. Distinct self-diffusion coefficients were determined and analyzed, namely the center-of-mass diffusion of the NCs and of coexisting ligand micelles, as well as the lateral diffusion of the l-α-lecithin ligand relative to the NC surface and within the micelles. We find a dynamic surface equilibrium, represented by a tunable lateral diffusion coefficient dependent on the ligand surface density. This phenomenon can be rationalized by the extraordinary binding of this zwitterionic ligand and its ability to bind via two different binding sites. These results highlight the dynamic nature of the ligand binding to lead halide perovskite NCs.
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Germany (DE)
France (FR)How to cite
APA:
Wahl, J., Zaluzhnyy, I., Prevost, S., Porcar, L., Beck, C., Matsarskaia, O.,... Seydel, T. (2026). Neutron Scattering Reveals a Dynamic Surface Equilibrium onl-α-Lecithin Functionalized CsPbBr3 Nanocrystals. Nano Letters, 26(25), 8208-8216. https://doi.org/10.1021/acs.nanolett.6c01347
MLA:
Wahl, Jan, et al. "Neutron Scattering Reveals a Dynamic Surface Equilibrium onl-α-Lecithin Functionalized CsPbBr3 Nanocrystals." Nano Letters 26.25 (2026): 8208-8216.
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