Smart Transformation of a Polyhedral Oligomeric Silsesquioxane Shell Controlled by Thiolate Silver(I) Nanocluster Core in Cluster@Clusters Dendrimers |
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| Authors: | Si Li Zhao‐Yang Wang Prof. Dr. Guang‐Gang Gao Bing Li Peng Luo Yu‐Jin Kong Prof. Dr. Hong Liu Prof. Dr. Shuang‐Quan Zang |
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| Affiliation: | 1. College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, China;2. School of Materials Science and Engineering, University of Jinan, Jinan, China |
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| Abstract: | Using polyhedral oligomeric silsesquioxane (POSS) modified by a thiol group as a protected ligand, atom‐precise multi‐heteorocluster‐based dendrimers Ag12@POSS6 ( 1 a and 1 b ) were assembled. Through the reactive ?SH groups, six POSS shell ligands stabilize the central 12‐core silver(I) cluster by diverse Ag?S interactions. When such Ag12@POSS6 complex was stimulated by different solvents (acetone or tetrahydrofuran), the core Ag12 silver(I) cluster underwent reversible structural transformation between flattened cubo‐octahedral (in 1 a ) and normal cubo‐octahedral (in 1 b ); concomitantly shell POSS clusters rearranged from pseudo‐octahedral to quasi‐octahedral. Furthermore, the film matrix modified by 1 a or 1 b showed different hydrophobicity. |
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| Keywords: | clusters polyhedral oligomeric silsesquioxanes silver solvent sensitivity structural transformation |
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