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Light-induced Dynamics of a Dodecanethiol-capped Gold Nanoparticles Supracrystal Revealed by Ultrafast Small-angle Electron Diffraction

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Abstract

We use ultrafast small-angle electron diffraction combined with angular cross-correlation analysis to characterize simultaneously the static local order and the dynamics of a glassy dodecanethiol-capped gold nanoparticles supracrystal. We demonstrate that the 12-carbon atoms ligand chains attached to the gold nano-particle facets have a preferential order at equilibrium and that an ultrafast excitation by light pulses serves as an external control parameter inducing self-organization among the ligands.

© 2016 Optical Society of America

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