Hierarchical surface-modification of nano-Cu toward one pot H-transfer-coupling-cyclization-CO fixation tandem reactions.

Fixation of CO into dihydroisobenzofuran derivatives has enormous applications in both production of natural products and antidepressant drugs, and reducing the green-house effect. However, the relatively complicated multi-step processes limit the further expansion of such a valuable CO conversion strategy. Herein, we hierarchically modify the surface of Cu nanoparticles (NPs) with Ag NPs and the robust metal-organic framework (MOF), ZIF-8, and report the presence of the Cu-Ag yolk-shell nanoalloy based heterogeneous catalysts, Cu@Ag and Cu@Ag@ZIF-8.

The photocurrent response in the perovskite device based on coordination polymers: structure, topology, band gap and matched energy levels.

Using a rigid ditopic ligand, 4,5-di(4'-carboxylphenyl)benzene (HL), three coordination polymers (CPs) formulated as MnL(HO) (1), CdL(HO) (2) and MnL(DMF) (3) have been synthesized and structurally characterized by single-crystal X-ray diffraction. These three CPs display 2D architectures but with different topologies. The experimental data and DFT calculation indicate that CP 2 is a semiconductor, and its CB/VB energy levels match with those of the perovskite CHNHPbI.