Acid-triggered interlayer sliding of two-dimensional copper(i)–organic frameworks: more metal sites for catalysis

Abstract

The interlay sliding of 2D metal- and covalent-organic frameworks (MOFs and COFs) affects not only the layout feature of the structures but also the functional output of the materials. However,...

Linking oxidative and reductive clusters to prepare crystalline porous catalysts for photocatalytic CO2 reduction with H2O

“…1c ). To elucidate the crystal structure of MCOF-Ti 6 Cu 3 , the staggered stacking model in the R 3 and P 63 space groups corresponding to ABC and AB stacking were built using Materials Studio 28 , 31 , 46 . The experimental PXRD pattern matches well with the simulated one for the ABC stacking model.…”

Metalated covalent organic frameworks: from synthetic strategies to diverse applications

“…In addition, Li et al revealed that the stacking mode of Cu 3 Pz 3 -based COFs is acid-dependent, which is rarely observed in reticular chemistry. 265 With the aid of trifluoroacetic acid and acetic acid, the solvothermal reactions of Cu 3 Pz 3 with anthracene-2,6-diamine in mesitylene/dioxane led to AAstacked JNM-3-AA and ABC-stacked JNM-3-ABC, respectively. Interestingly, immersion of JNM-3-ABC in trifluoroacetic acid could trigger a stacking mode transformation from ABC to AA within 30 min, while the soaking of JNM-3-AA in a methanol solution of sodium methoxide could not trigger this structural transformation, indicating that strong interlayer CuÁ Á ÁCu interactions facilitate the formation of eclipsed stacking mode based on the computational simulations.…”

Strong visible light-absorbing BODIPY-based Cu(i) cyclic trinuclear sensitizer for photocatalysis

“…Unlike the normal distorted tetrahedral geometry in many Cu(I) complexes, each Cu(I) center in cyclic trinuclear copper(I) complexes (Cu-CTCs) exhibits a linear and unsaturated twocoordinate conformation, and these complex as a whole form a near-planar tri-cooper nine-membered ring. 20 Owing to these unique structural features, Cu-CTCs show remarkable π-acidity/basicity, 21,22 catalytic activities, [23][24][25][26] and abundant photoluminescence (PL) properties. [27][28][29][30][31] More importantly, Cu-CTCs are readily able to form excimer/exciplex and metal-sensitized ligand-localized phosphorescence via the formation of the lowest excited state induced by intramolecular Cu-Cu interactions, and therefore are beneficial to produce the longlived triplet excited state though efficient intersystem crossing (ISC).…”