Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. In an article, author is Goto, Yasutomo, once mentioned the application of 128143-89-5, Name is 4′-Chloro-2,2′:6′,2”-terpyridine, molecular formula is C15H10ClN3, molecular weight is 267.713, MDL number is MFCD00191930, category is catalyst-ligand. Now introduce a scientific discovery about this category, Recommanded Product: 128143-89-5.
Bipyridine-silica nanotubes with high bipyridine contents in the framework
Bipyridine-silica nanotubes (BPy-NTs) represent a solid chelate ligand for the formation of efficient heterogeneous metal complex catalysts. BPy-NTs are typically synthesized by the co-condensation of bipyridine (BPy)and benzene (Ph)-bridged organosilane precursors. However, the amount of BPy in the framework has been limited to a maximum of 1.22 mmol g(-1) owing to the difficulty in the formation of the NT structure. In this study, BPy-NTs with a large amount of BPy ligands (2.43 mmol g(-1)) were prepared from a reaction mixture with a high molar ratio of BPy precursor (up to 80 mol%) via the optimization of synthesis conditions. Stable nanotube structures with inner diameters in the range of 6.1-7.0 nm and lengths of tens to hundreds of nanometers were characterized using scanning transmission electron microscopy, N2 adsorption, and 29Si magic angle spinning nuclear magnetic resonance spectroscopy analyses. A large amount of Pt(bpy)Cl-2 complexes were homogeneously immobilized on the NT walls (PtCl2@BPy-NTs), which was confirmed by high-angle annular dark-field scanning transmission electron microscopy, UV-vis absorption, and X-ray photoelectron spectroscopy analyses. PtCl2@BPy-NTs exhibited efficient photocatalysis for H-2 evolution under visible light irradiation. The photocatalytic activity increased as the amount of Pt complexes loaded on the BPy-NTs increased. A small amount of Pt metal particles was formed on the BPy-NTs during the photoreaction, which promoted the H-2 evolution reaction, as a catalyst with higher activity than only the Pt complex.
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Reference:
Metal catalyst and ligand design,
,Ligand Template Strategies for Catalyst Encapsulation – NCBI