Of the many plasmonic nanoparticle geometries that have been synthesized, nanocubes have been of particular interest for creating nanocavities, facilitating plasmon coupling, and enhancing phenomena dependent upon local electromagnetic fields. Here we report the straightforward colloidal synthesis of single-crystalline {100} terminated Al nanocubes by decomposing AlH3 with Tebbe's reagent in tetrahydrofuran. The size and shape of the Al nanocubes is controlled by the reaction time and the ratio of AlH3 to Tebbe's reagent, which, together with reaction temperature, establish kinetic control over Al nanocube growth. Al nanocubes possess strong localized field enhancements at their sharp corners and resonances highly amenable to coupling with metallic substrates. Their native oxide surface renders them extremely air stable. Chemically synthesized Al nanocubes provide an earth-abundant alternative to noble metal nanocubes for plasmonics and nanophotonics applications.

Aluminum Nanocubes Have Sharp Corners / Clark, B. D.; Jacobson, C. R.; Lou, M.; Renard, D.; Wu, G.; Bursi, L.; Ali, A. S.; Swearer, D. F.; Tsai, A. -L.; Nordlander, P.; Halas, N. J.. - In: ACS NANO. - ISSN 1936-0851. - 13:8(2019), pp. 9682-9691. [10.1021/acsnano.9b05277]

Aluminum Nanocubes Have Sharp Corners

Bursi L.;
2019

Abstract

Of the many plasmonic nanoparticle geometries that have been synthesized, nanocubes have been of particular interest for creating nanocavities, facilitating plasmon coupling, and enhancing phenomena dependent upon local electromagnetic fields. Here we report the straightforward colloidal synthesis of single-crystalline {100} terminated Al nanocubes by decomposing AlH3 with Tebbe's reagent in tetrahydrofuran. The size and shape of the Al nanocubes is controlled by the reaction time and the ratio of AlH3 to Tebbe's reagent, which, together with reaction temperature, establish kinetic control over Al nanocube growth. Al nanocubes possess strong localized field enhancements at their sharp corners and resonances highly amenable to coupling with metallic substrates. Their native oxide surface renders them extremely air stable. Chemically synthesized Al nanocubes provide an earth-abundant alternative to noble metal nanocubes for plasmonics and nanophotonics applications.
2019
13
8
9682
9691
Aluminum Nanocubes Have Sharp Corners / Clark, B. D.; Jacobson, C. R.; Lou, M.; Renard, D.; Wu, G.; Bursi, L.; Ali, A. S.; Swearer, D. F.; Tsai, A. -L.; Nordlander, P.; Halas, N. J.. - In: ACS NANO. - ISSN 1936-0851. - 13:8(2019), pp. 9682-9691. [10.1021/acsnano.9b05277]
Clark, B. D.; Jacobson, C. R.; Lou, M.; Renard, D.; Wu, G.; Bursi, L.; Ali, A. S.; Swearer, D. F.; Tsai, A. -L.; Nordlander, P.; Halas, N. J.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1298806
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