A silver cluster-assembled material as a matrix for enzyme immobilization towards a highly efficient biocatalyst.

Silver cluster-assembled materials (SCAMs) epitomize well-defined extended crystalline frameworks that combine the ingenious designability at the atomic/molecular level and high structural robustness. They have captivated the interest of the scientific fraternity because of their modular construction which enables to systematically tailor their functions, and their capacity to not only inherit the characteristics of component building units but also introduce their uniqueness in endowing the final material with extraordinary properties. Herein, we demonstrate the synthesis of a novel (3,6)-connected two-dimensional (2D) SCAM [Ag(SBu)(CFCOO)(THIT)] (described as TUS 5, THIT = 2,4,6-tri(1-imidazol-1-yl)-1,3,5-triazine) composed of Ag cluster nodes and tritopic imidazolyl linkers.

3D Covalent Organic Framework with "the" Topology.

Discovery of new topology covalent organic frameworks (COFs) is a mainstay in reticular chemistry and materials research because it not only serves as a stepwise guide to the designed construction of covalent-organic architectures but also helps to comprehend function from structural design point-of-view. Proceeding on this track, the first 3D COF, TUS-38, with the topology is constructed by reticulating a planar triangular 3-c node of D symmetry with a tetragonal prism 8-c node of D symmetry via [3 + 8] reversible imine condensation reaction. TUS-38 represents a twofold interpenetrated multidirectional pore network with a high degree of crystallinity and structural integrity.