Atomic-level separation of thiolate-protected metal clusters
نویسندگان
چکیده
منابع مشابه
Chirality in thiolate-protected gold clusters.
Over recent years, research on thiolate-protected gold clusters Au(m)(SR)n has gained significant interest. Milestones were the successful determination of a series of crystal structures (Au102(SR)44, Au25(SR)18, Au38(SR)24, Au36(SR)24, and Au28(SR)20). For Au102(SR)44, Au38(SR)24, and Au28(SR)20, intrinsic chirality was found. Strong Cotton effects (circular dichroism, CD) of gold clusters pro...
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We report a high yielding synthesis of truly monodisperse, thiolate-protected silver clusters via a rationally designed approach. The cluster composition was determined by electrospray ionization (ESI) mass spectrometry to be Ag(7)(DMSA)(4), where DMSA represents meso-2,3-dimercaptosuccinic acid. The Ag(7) thiolate clusters exhibit distinct optical properties. The approach developed in this wor...
متن کاملFar-infrared spectra of well-defined thiolate-protected gold clusters.
The far infrared spectra of a series of well-defined gold clusters covered with 2-phenylethanethiolate were studied. The spectra of the clusters are different but the differences are subtle. The Au-S stretching vibrations give rise to bands around 300 cm(-1) and below. The relative intensity of these bands changes but they shift only slightly for different clusters. A low-frequency band was ide...
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The isoforms of rat liver apo-metallothionein (MT) were reconstituted in vitro with Cd and Zn ions to study the order of binding of the seven metal sites. Reconstitution with seven Cd ions resulted in a metalloprotein similar to induced Cd,Zn-MT by the criteria of electrophoretic mobility, insensitivity to proteolysis by subtilisin and the pH-dependent release of Cd. Proteolytic digestion of MT...
متن کاملSeparation of precise compositions of noble metal clusters protected with mixed ligands.
This report describes the precise and systematic synthesis of PdAu24 clusters protected with two types of thiolate ligands (-SR1 and -SR2). It involved high-resolution separation of metal clusters containing a distribution of chemical compositions, PdAu24(SR1)18-n(SR2)n (n = 0, 1, 2, ..., 18), to individual clusters of specific n using high-performance liquid chromatography. Similar high-resolu...
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ژورنال
عنوان ژورنال: Nanoscale
سال: 2020
ISSN: 2040-3364,2040-3372
DOI: 10.1039/d0nr00824a