0000000001303913
AUTHOR
Shuichao Lin
Bulky Surface Ligands Promote Surface Reactivities of [Ag141X12(S-Adm)40]3+ (X=Cl, Br, I) Nanoclusters: Models for Multiple-Twinned Nanoparticles
Surface ligands play important roles in controlling the size and shape of metal nanoparticles and their surface properties. In this work, we demonstrate that the use of bulky thiolate ligands, along with halides, as the surface capping agent promotes the formation of plasmonic multiple-twinned Ag nanoparticles with high surface reactivities. The title nanocluster [Ag141X12(S-Adm)40]3+ (where X = Cl, Br, I; S-Adm = 1-adamantanethiolate) has a multiple-shell structure with an Ag71 core protected by a shell of Ag70X12(S-Adm)40. The Ag71 core can be considered as 20 frequency-two Ag10 tetrahedra fused together with a dislocation that resembles multiple-twinning in nanoparticles. The nanocluster…
From Symmetry Breaking to Unraveling the Origin of the Chirality of Ligated Au13Cu2 Nanoclusters
A general method, using mixed ligands (here diphosphines and thiolates) is devised to turn an achiral metal cluster, Au13Cu2, into an enantiomeric pair by breaking (lowering) the overall molecular symmetry with the ligands. Using an achiral diphosphine, a racemic [Au13Cu2(DPPP)3(SPy)6]+ was prepared which crystallizes in centrosymmetric space groups. Using chiral diphosphines, enantioselective synthesis of an optically pure, enantiomeric pair of [Au13Cu2((2r,4r)/(2s,4s)‐BDPP)3(SPy)6]+ was achieved in one pot. Their circular dichroism (CD) spectra give perfect mirror images in the range of 250–500 nm with maximum anisotropy factors of 1.2×10−3. DFT calculations provided good correlations wit…
CCDC 1469852: Experimental Crystal Structure Determination
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CCDC 1543483: Experimental Crystal Structure Determination
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CCDC 1814032: Experimental Crystal Structure Determination
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CCDC 1428884: Experimental Crystal Structure Determination
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CCDC 954905: Experimental Crystal Structure Determination
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CCDC 1814033: Experimental Crystal Structure Determination
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CCDC 1508753: Experimental Crystal Structure Determination
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CCDC 954903: Experimental Crystal Structure Determination
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CCDC 2022415: Experimental Crystal Structure Determination
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CCDC 1427733: Experimental Crystal Structure Determination
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CCDC 954904: Experimental Crystal Structure Determination
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CCDC 1967410: Experimental Crystal Structure Determination
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CCDC 1428883: Experimental Crystal Structure Determination
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CCDC 1543485: Experimental Crystal Structure Determination
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CCDC 1814031: Experimental Crystal Structure Determination
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