2015/08/05 by Yuxiang Chen, Chenjie Zeng, Chong Liu +5 · 1 citation
Chemistry · Materials Science · Medicine · #Advanced Nanomaterials in Catalysis #Atom (system on chip) #Barrel (horology) #Chemistry #Crystal structure #Crystallography #Icosahedral symmetry #Nanocluster Synthesis and Applications #Pharmacological Effects and Toxicity Studies #Shell (structure)
paper · doi:10.1021/jacs.5b05378
openalex publication_date 2015/08/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report the structure determination of a large gold nanocluster formulated as Au130(p-MBT)50, where p-MBT is 4-methylbenzenethiolate. The nanocluster is constructed in a four-shell manner, with 55 gold atoms assembled into a two-shell Ino decahedron. The surface is protected exclusively by -S-Au-S- staple motifs, which self-organize into five ripple-like stripes on the surface of the barrel-shaped Au105 kernel. The Au130(p-MBT)50 can be viewed as an elongated version of the Au102(SR)44. Comparison of the Au130(p-MBT)50 structure with the recently discovered icosahedral Au133(p-TBBT)52 nanocluster (where p-TBBT = 4-tert-butylbenzenethiolate) reveals an interesting phenomenon that a subtle ligand effect in the para-position of benzenethiolate can significantly affect the gold atom packing structure, i.e. from the 5-fold twinned Au55 decahedron to 20-fold twinned Au55 icosahedron.