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Smart Transformation of a Polyhedral Oligomeric Silsesquioxane Shell Controlled by Thiolate Silver(I) Nanocluster Core in Cluster@Clusters Dendrimers
Author(s) -
Li Si,
Wang ZhaoYang,
Gao GuangGang,
Li Bing,
Luo Peng,
Kong YuJin,
Liu Hong,
Zang ShuangQuan
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201807548
Subject(s) - silsesquioxane , octahedron , dendrimer , crystallography , cluster (spacecraft) , tetrahydrofuran , ligand (biochemistry) , materials science , acetone , shell (structure) , chemistry , polymer chemistry , crystal structure , organic chemistry , polymer , composite material , programming language , biochemistry , receptor , solvent , computer science
Using polyhedral oligomeric silsesquioxane (POSS) modified by a thiol group as a protected ligand, atom‐precise multi‐heteorocluster‐based dendrimers Ag 12 @POSS 6 ( 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 Ag 12 @POSS 6 complex was stimulated by different solvents (acetone or tetrahydrofuran), the core Ag 12 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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