关键字:PI INTERACTIONS;GOLDNANOPARTI;CLESCLUSTERS
摘要:The capture of cations with nanoclusters is a flourishing area in the
nanocluster science due to their effects on both molecular chemistry and supramolecular
chemistry. The capture of Cs+ is most concerned in this field for its capability of controlling
the synthesis and assembly of nanoclusters. However, the atomically precise interaction
between Cs+ ions and nanoclusters remains mysterious. In this paper, we report the first X-ray
crystal structure of a Cs+
-captured nanocluster, formulated as Cs3Ag29(SSR)12(DMF)x (x = 5,
6; SSR, 1,3-benzene dithiol). The capture of Cs+ with Ag29(SSR)12(PPh3)4 peels the PPh3
ligands off from the nanocluster surface, giving rise to Cs3Ag29(SSR)12(DMF)x. The Cs+
−cluster interactions not only alter the
geometric structure of the Ag29(SSR)12 kernel but also assemble Ag29(SSR)12 clusters into one-dimensional, cluster-based lines.
Remarkable differences have been observed by comparing the optical properties of the Cs3Ag29(SSR)12(DMF)x nanocluster in
solutions or in crystallized films. Overall, this work is of great significance for revealing both the Cs+
-induced intracluster
transformation of nanocluster structures and the Cs+
-induced intercluster self-assembly.
卷号:31
期号:13
是否译文:否