Smart Transformation of a Polyhedral Oligomeric Silsesquioxane Shell Controlled by Thiolate Silver(I) Nanocluster Core in Cluster@Clusters Dendrimers

Abstract

Using polyhedral oligomeric silsesquioxane (POSS) modified by at hiol group as ap rotected ligand, atom-precise multi-heteorocluster-based dendrimers Ag 12 @POSS 6 (1a and 1b)w ere assembled. Through the reactive À SH groups,s ix POSS shell ligands stabilizethe central 12-core silver(I) cluster by diverse AgÀSi nteractions.W hen 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 1a)a nd normal cubo-octahedral (in 1b); concomitantly shell POSS clusters rearranged from pseudo-octahedral to quasi-octahedral. Furthermore,the film matrix modified by 1a or 1b showed different hydrophobicity.

Mesoporous Crystalline Silver-Chalcogenolate Cluster-Assembled Material with Tailored Photoluminescence Properties

“…[32][33][34][35][36][37][38][39][40][41] In our present study, we developed a series of SC-CAMs with diverse structures and good stability. 23,26,[42][43][44][45][46][47] However, the interpenetrated structures were limited to specific pore sizes, that is, those which were accessible only by small guest molecules; meanwhile some functionalized guest molecules were restrained from re-entry into the pores because of their oversized structures.…”

Substituent Influence on Structural and Luminescent Diversities of Cu3(pyrazolate)3-CunIn Coordination Supramolecular Isomers

“…Multinuclear copper(I)/silver(I)-based clusters have been widely used to construct photofunctional coordination materials in many fields such as lighting, 1,2 sensing, 3−5 optical devices, 6 photocatalysis, 7−9 and other areas. 10,11 Among them, CuI-based clusters 12 have been extensively reported to show fascinating structural diversity from the well-known rhombic Cu 2 I 2 6,13−19 and cubic Cu 4 I 4 20−27 to polynuclear aggregates 28 and even polymers, 29−31 depending on the nature of the ligands 32,33 and synthesis procedures. 23 Owing to the cuprophilicity, heavy atom effect, rich valence electrons of copper and iodine atoms, and electronic effect of organic ligands, CuI-based clusters show striking emission behaviors such as thermochromism and mechanochromism.…”

SC–SC Anion-Assisted Linker Exchange within a Three-Dimensional Cu(II)-Triazole Framework: A Luminescent Probe for S2–

“… 5 These chemosensors can be designed for the selective sensing of species such as cations, anions, small molecules, volatile organic compounds (VOCs), biomolecules, and nitroaromatic explosives. 6 − 8 …”