Room-temperature liquid-phase synthesis of aluminium nanoparticles

Sven Riegsinger; Radian Popescu; Dagmar Gerthsen; Claus Feldmann

doi:10.1039/d2cc01846b

Room-temperature liquid-phase synthesis of aluminium nanoparticles

Chem Commun (Camb). 2022 Jul 5;58(54):7499-7502. doi: 10.1039/d2cc01846b.

Authors

Sven Riegsinger¹, Radian Popescu², Dagmar Gerthsen², Claus Feldmann¹

Affiliations

¹ Institut für Anorganische Chemie, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131 Karlsruhe, Germany. claus.feldmann@kit.edu.
² Laboratorium für Elektronenmikroskopie, Karlsruhe Institute of Technology (KIT), Engesserstrasse 7, 76131 Karlsruhe, Germany.

PMID: 35604276
DOI: 10.1039/d2cc01846b

Abstract

Aluminium nanoparticles, Al(0), are obtained via liquid-phase synthesis at 25 °C. Accordingly, AlBr₃ is reduced by lithium naphthalenide ([LiNaph]) in toluene in the presence of N,N,N',N'-tetramethylethylenediamine (TMEDA). The Al(0) nanoparticles are small (5.6 ± 1.5 nm) and highly crystalline. A light yellow colour and absorption at 250-350 nm are related to the plasmon-resonance absorption. Due to TMEDA functionalization, the Al(0) nanoparticles are colloidally and chemically stable, but show high reactivity after TMEDA removal.