The tetrahedral structure and luminescence properties of Bi-metallic Pt₁Ag₂₈(SR)₁₈(PPh₃)₄ nanocluster

Abstract

Tailoring the nanocluster at an atomic level leads to a tetrahedron-shaped FCC Pt1Ag28(S-Adm)18(PPh3)4 nanocluster and a large enhancement in photoluminescence.

Zinc‐Coordinated Hierarchical Organization of Ligand‐Stabilized Gold Nanoclusters for Chiral Recognition and Separation

“…An important choice in this regard could be atomic clusters, the structure and chemical constituents of which are easier to control, as was recently reported . Results from the current literature report simple, facile assembly of metal clusters, based on the interactions between the stabilizing ligands . It is also important to note that such an assembly may not necessarily provide relevant new properties in comparison to the constituent clusters.…”

The Structure–Property Correlations in the Isomerism of Au21(SR)15 Nanoclusters by Density Functional Theory Study

“…[15] Theisomerism of clusters with the same number of core atoms but different assembly pattern is classified into the core-isomerism. For example, the two [Pt 1 Ag 28 (SR) 18 (PPh 3 ) 4 ] 2 + (Pt 1 Ag 28 -1/2 in Figure 1a)p repared by the one-pot [17] or ligand exchange [18] method correspond to the core-isomerism.T hese two clusters adopt the same exterior staples (four Ag 4 S 6 P 1 )b ut slightly different core structure (an FCC core in Pt 1 Ag 28 -1 [19] vs. ad istorted FCC-based core in Pt 1 Ag 28 -2 [20] ). Similarly,t he two reported Au 52 (SR) 32 [21,22] and the two Au 38 (SR) 24 [23,24] also correspond to the core-isomerism (Figure S1 a-b).…”

“…Framework of selected nanoclusters adoptingcore-isomerism (a); staple-isomerism (b) and complex-isomerism (c). The molecular formula of structure: Pt 1 Ag 28 -1/2:[ Pt 1 Ag 28 (SAdm) 18 (PPh) 4 ] 2 + ; Au 28 -1:Au 28 (TBBT) 20 ; Au 28 -2:Au 28 (CHT) 20 ; Au 30 -1:A u 30 (S t Bu) 18 ; Au 30 -2:Au 30 (SAdm) 18 .S Adm, TBBT,C HT, and S t Bu denote 1-adamantanethiol, 4-tert-butylbenzenethiol, cyclohexyl, tertiary butylthiol, respectively.c olor labels:yellow,g old;gray-white, silver; red, sulfur; turquoise, platinum. For clarity,the carbon and hydrogen atoms on the exterior ligandsa re not shown.…”

The Synthesis of Chiral Ag4Pd2(SR)8 by Nonreplaced Galvanic Reaction

“…During the past decade, atomically precise doped nanoclusters (NCs, ultrasmall nanoparticles with size less than ≈2 nm) have gained considerable attention from nanoscientists because of the synergistic or even new properties (e.g., catalytic and optical properties) of doped NCs compared to their homometallic counterparts . A general synthesis method is the synchro‐synthesis (i.e., the mixed metal precursors are concurrently reduced by reducing agent like NaBH 4 ), such as the preparation of Au 24 Pd(SR) 18 , Au 24 Pt(SR) 18 , Au 25− x Ag x (SR) 18 , Au 38− x Ag x (SR) 18 , Au 36 Pd 2 (SR) 18 , Au 36 Pt 2 (SR) 24 , Ag 24 Pd(SR) 18 , Ag 24 Pt(SR) 18 , Ag 32 Au 12 (SR) 30 , and [Au 12+ n Cu 32 (SR) 30+ n ] NCs (SR: thiolate).…”