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Triazine-based covalent organic polymers (COPs) constructed from triazine or nitrile containing precursors via covalent bonding are becoming an important sub-class of porous organic framework materials for a range of applications. In particular, these materials have been proposed as a new catalyst or support material for a variety of liquid phase organic transformation reactions owing to their tunable porous structures with high surface area, high nitrogen contents, high stability in both organic and aqueous media, and relatively easy synthesis. This review article summarizes the current research activities devoted to the synthesis and characterization of new triazine-based COP materials, and their applications for heterogeneous catalysis aiming at fine chemicals synthesis are presented with critical comments. [ABSTRACT FROM AUTHOR]

Two kinds of microporous covalent triazine-based organic polymers (MCTPs) were synthesized from inexpensive starting materials via a simple and cost effective Friedel–Crafts reaction route, and their CO2 and CH4 gas uptake capacities were investigated. The synthesized microporous materials showed high BET surface areas of 1452 (MCTP-1) and 859 m2 g−1 (MCTP-2). MCTP-1 exhibited a significant CO2 uptake capacity (204.3 mg g−1, 273 K/1 bar) with moderate CO2/N2 selectivity (15.4), whereas MCTP-2 showed a moderate CO2 uptake capacity (160.6 mg g−1, 273 K/1 bar) but exceptional CO2/N2 selectivity (68.6). MCTP-1 also exhibited substantial CO2 (497.4 mg g−1) and CH4 (85.4 mg g−1) storage capacities at 300 K and 35 bar. [ABSTRACT FROM AUTHOR]

Thiol-functionalized ZIF-90 (ZIF-90-SH) was prepared via condensation of the free aldehyde group of ZIF-90 with 2-mercaptoethylamine to an imine through a one-step post-synthesis route. A subsequent reaction with manganese(ii) acetate resulted in the formation of a new Mn(ii)-immobilized hybrid material (ZIF-90-S[Mn]). This material was characterized by chemical analysis, X-ray diffraction, N2 adsorption–desorption, thermogravimetric analysis and Fourier transform infrared spectroscopy, which confirmed the successful functionalization of the as-synthesized ZIF-90. ZIF-90-SH employed as an adsorbent for the removal of Hg(ii) ions from an aqueous solution at room temperature exhibited an adsorption capacity of ca. 22.4 mg g−1. The material showed 96–98% removal of Hg(ii) ions in a low concentration range (0.1 to 10.0 mg L−1). ZIF-90-S[Mn] showed good catalytic activity and selectivity in the epoxidation of several important alkenes using molecular oxygen under atmospheric pressure. Recycling and hot filtration experiments coupled with a blank test showed that epoxidation proceeded over ZIF-90-S[Mn] on the external surface of the ZIF-90 matrices, where the active Mn(ii) sites were located. The catalyst could be recycled up to four times without significant loss of efficiency. [ABSTRACT FROM AUTHOR]

A dry gel conversion synthesis aided by fine-grinding of the synthesis precursors produces a MIL-101 product with a high surface area greater than 4100 m2 g−1 and a product yield approaching 90% in a very reproducible manner after only simple water washing. [ABSTRACT FROM AUTHOR]

A new small molecule probe for in vivolipid imaging, LipidGreen (compound 5), was developed. LipidGreen stained lipid droplets in 3T3L1 cell lines and fat deposits in zebrafish without apparent toxicity up to 100 μM. The utility of LipidGreen as a drug screening platform for fat regulation was also demonstrated in live zebrafish. [ABSTRACT FROM AUTHOR]