Metal–polymer complex catalysts on the base of polyethyleneimine for oxidation of sulfides

Cyclometalated Ir–Zr Metal–Organic Frameworks as Recyclable Visible-Light Photocatalysts for Sulfide Oxidation into Sulfoxide in Water

“…In contrast, cyclometalated Ir­(III) and polypyridyl Ru­(II) complexes have been demonstrated as ideal PSs due to the high photostability and tunable photophysical properties. − However, their applications raise another issue toward the recovery and reuse of the expensive photocatalysts and the contamination of organic products by trace amounts of photocatalysts that often contain heavy metals under homogeneous conditions. To address these problems, a heterogeneous system, where PSs are immobilized into organic or inorganic matrices, has been employed to extend the durability of the catalytic activity and recover the photocatalysts from the reaction solution. − Metal–organic frameworks (MOFs) are a class of hybrid materials constructed from organic linkers and metal ions or clusters as nodes. − Because of their high porosity, stability, and tunability, MOFs serve as an excellent platform to design photocatalysts by combining molecular functionality into a solid state material. − Indeed, Ir­(III) and Ru­(II) MOFs have been employed as photocatalysts for organic reactions. − However, their photocatalytic activity for the oxidation of sulfide into sulfoxide has never been observed under visible light.…”

Preparation of Pt Nanoclusters with Different Emission Wavelengths and Their Application in Co2+ Detection

“…One possible mechanism explaining this outcome is that the Cu 2 + and Co 2 + ions may complex with PEI through the amino groups. [19] This complex would cause an aggregation of large Pt NPs, which quenches the fluorescence (Scheme 1 b). UV/Vis spectra demonstrate such a complex did indeed occur (Figure S5).…”

Polymer biquinolyl-containing complexes of Pd(ii) as efficient catalysts for cyanation of aryl and vinyl halides with K4Fe(CN)6

“…All this provides a precondition for increasing interest in this type of catalytic systems and many efficient catalytic processes have been already elaborated using this approach (see, e.g., ref. [1][2][3][4][5][6][7][8].…”