In Situ Self-Assembly of Hydrogen-Bonded Organic Frameworks for Organic Photoredox Catalysis

Abstract

Structural self-assembly enables the hydrogen-bonded organic frameworks (HOFs) with facile synthesis, self-repair structures, and intriguing optoelectronic attributes. Herein, we report a strategy that directly employs the HOF monomer for efficient photoredox catalysis without involving the catalyst prefabrication. Remarkably, this simplified mode was equally effective as the prefabricated HOF catalysts, verified with high activity, selectivity, and generality in photocatalytic sulfide oxygenation. The complementary hydrogen (H) bonds of carboxy dimmers led to a fast in situ self-assembly of the HOF monomer into the target HOF framework. The yield enhancement of singlet oxygen (1O2) resulting from the excitonic effect and strong interlayer confinement of self-assembly frameworks accounted for the activity origin. This work offered a facile but efficient application approach to use HOF material for photoredox catalysis.

Robust {Cd4}-Organic Framework for Efficiently Catalyzing CO2 Cycloaddition and Knoevenagel Condensation

“…16,17 For example, the release of massive amounts of carbon dioxide (CO 2 ) into the atmosphere has triggered the global greenhouse effect, greatly affecting human survival and development. 18,19 Therefore, research on reducing the content of CO 2 in the atmosphere and converting it into clean energy has important significance. Currently, there have been numerous reports on transforming CO 2 into high-value-added products, mainly in the fields of photochemical products, fine chemical products, and polymeric materials.…”

“…In addition, with the rapid economic development and population explosion, the rapidly increasing consumption of fossil fuels has brought about a series of negative impacts. , For example, the release of massive amounts of carbon dioxide (CO 2 ) into the atmosphere has triggered the global greenhouse effect, greatly affecting human survival and development. , Therefore, research on reducing the content of CO 2 in the atmosphere and converting it into clean energy has important significance. Currently, there have been numerous reports on transforming CO 2 into high-value-added products, mainly in the fields of photochemical products, fine chemical products, and polymeric materials. − Among the many chemicals prepared from CO 2 , the preparation of cyclic carbonates is one of the most promising ways to achieve industrial application prospects for the utilization of CO 2 .…”

Robust Zn(II)-Organic Framework for High Catalytic Activity on Cycloaddition of CO2 with Epoxides and Reversible Iodine Uptake

“…Microporous metal–organic frameworks (MOFs), as a new type of crystalline porous materials, have become a research hotspot in the field of material chemistry because of their excellent physicochemical properties including regular arrangements, large surface area, and easy functionalization, due to which they show excellent performance in the fields of storage, separation, sensing, and chemical-biochemical catalysis. − Scientific research over the past two decades has proved that the size, function, and diversity of pore space can be accurately optimized at the molecular level by reasonably designing construction modules and synthetic strategies. Especially in catalysis, functionalized MOFs can provide a large number of catalytic sites and suitable reaction space and can provide an ideal reaction platform for a variety of heterogeneous catalytic reactions. − Because the topology and confined microenvironment usually can be regulated by controlling the geometry and bridging mode of ligands, the skeleton with a suitable size and shape can be obtained by adjusting the structure and length of ligands, the proportion of linked metal sites, and the introduction of different functional groups. − …”

A critical review on emerging photoactive porous materials for sulfide oxidation and sulfur mustard decontamination

“…Due to the toxic nature of HDs, thioanisole (TA) is employed as a model substrate for photo-oxidation to methylphenyl sulphoxide (MPS). 43…”

“…Due to the toxic nature of HDs, thioanisole (TA) is employed as a model substrate for photo-oxidation to methylphenyl sulphoxide (MPS). 43 After evaluating the TA oxidation potential, the efficacy of the photocatalyst was investigated on the conversion of 2-chloroethyl ethyl sulfide (CEES) to 2-chloroethyl sulfoxide (CEESO) or 2-chloroethyl ethyl sulfone (CEESO 2 ). Fig.…”