An object of the present invention is to provide a novel metal-organic framework with a dicarboxylic acid having a terphenyl skeleton as an organic ligand and a gas storage method using such a metal-organic framework. A metal-organic framework comprising a carboxylate ion of formula (I) and a multivalent metal ion bonded to each other. (In formula (I), R.sup.1 and R.sup.2 each independently are a hydroxy group or an unsubstituted or substituted C1-6 alkyl group. R.sup.10 and R.sup.11 each independently are an unsubstituted or substituted C1-6 alkyl group. R.sup.20 is an unsubstituted or substituted C1-6 alkyl group. Provided that, as substituents on R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.10, R.sup.11, and R.sup.20, a carboxy group (COOH) and a carboxylate ion group (COO—) are excluded. In addition, R.sup.10 and R.sup.11 are not a methyl group at the same time.)

##STR00001##

The present disclosure provides a polyoxomolybdate material and a preparation method and use thereof, a solar cell, and an organic light-emitting diode (OLED), and belongs to the technical field of optoelectronic devices. An organic solar cell (OSC) with the polyoxomolybdate material of the present disclosure as an electrode interface material has an open-circuit voltage of 0.810 V to 0.860 V, a short-circuit current density of 24.50 mA/cm.sup.2 to 26.10 mA/cm.sup.2, a fill factor of 68.7% to 78.8%, and a power conversion efficiency (PCE) of 14.21% to 17.42%. An OLED with the polyoxomolybdate material of the present disclosure has a turn-on voltage of 2.3 V to 3.5 V, a maximum brightness of 14,330 cd/m.sup.2 to 43,430 cd/m.sup.2, a current efficiency of 7.00 cd/A to 15.00 cd/A, and a power efficiency of 3.50 lm/W to 13.00 lm/W, and exhibits prominent LED performance.

Chromium (III) Complexes of the following Schiff base ligands derived from N-[4-methyl phenyl-3-oxo-3-[2-1H-Pyrrole-3yl hyrazinyl] propanamide and cinnamaldehyde were synthesized. Schiff base Ligands and their coordinated chromium (III) complexes were characterized using elemental analysis, UV-Vis, FT-IR, conductance data, TEM, XRD, and thermogravimetric analysis. In the UV-VIS study, a bathochromic shift of approximately 80 nm indicates the formation of chromium(III) complex by more than one coordinating site. The FT-IR spectra of complexes clearly show that the formation of Cr—N bond between ligand and Cr(III) ion at 1680 cm.sup.−1, while the TGA analysis shows the presence of six coordinated water molecules in the complex. Based on the physicochemical analysis, the following empirical formula has been assigned to chromium (III) complexes: [Cr(C.sub.29H.sub.33N.sub.17S.sub.2)]Cl.sub.3.6H.sub.2O and [Cr(C.sub.35H.sub.36Cl.sub.2N.sub.6O.sub.4)]Cl.sub.3.6H2O. Moreover, the antioxidant activity of complexes was evaluated by using 2,2′-diphenyl-1-picrylhydrazyl(DPPH) free radical assay which showed that the complexes have a higher antioxidant activity than that of Schiff base ligands.

Methods for depositing protective coatings on aerospace components are provided and include sequentially exposing the aerospace component to a chromium precursor and a reactant to form a chromium-containing layer on a surface of the aerospace component by an atomic layer deposition process. The chromium-containing layer contains metallic chromium, chromium oxide, chromium nitride, chromium carbide, chromium silicide, or any combination thereof.

The invention provides a facile process for preparing various Group VI precursor compounds, set forth below as Formula (I), useful in the vapor deposition of certain Group VI metals onto solid substrates, especially microelectronic semiconductor device substrates. Also provided is a process for the preparation of such precursor compounds. Additionally, the invention provides a method for vapor deposition of Group VI metals onto microelectronic device substrates utilizing the precursor compounds of the invention.

An organic frame material having zinc containing isopoly-molybdic acid metal, a method of manufacturing the same, and the application thereof are provided. The organic frame material having zinc containing isopoly-molybdic acid metal includes a three-dimensional network structure in which the zinc ions coordinate with 2,3,5,6-tetrafluoro-bis (1,2,4-triazole-1-methyl) benzene ligands and trinuclear molybdate anions. The organic frame material having zinc containing isopoly-molybdic acid metal exhibits high catalytic activity, thermal stability, low toxicity, ease of synthetization and use, and strong reproducibility.

The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.

The present invention relates to a method for oxidative cleavage of a substrate consisting of at least one functionalised or non-functionalised linear olefin, in particular a mono- or polyunsaturated aliphatic carboxylic acid, or one of the esters thereof, or at least one non-functionalised cyclic olefin, using hydrogen peroxide, in the presence of a metal catalyst which consists of at least one onium halooxodiperoxometallate. It also relates to a novel catalyst consisting of a specific onium halooxodiperoxometallate which can be used, in particular, in said method.

The present disclosure relates to a catalyst system comprising i) (a) an N.sup.2-phosphinyl bicyclic amidine chromium salt or (b) a chromium salt and an N.sup.2-phosphinyl bicyclic amidine and ii) an organoaluminum compound. The present disclosure also relate to a process comprising: a) contacting i) ethylene; ii) a catalyst system comprising (a) an N.sup.2-phosphinyl bicyclic amidine chromium salt complex or (b) a chromium salt and an N.sup.2-phosphinyl bicyclic amidine; ii) an organoaluminum compound, and iii) optionally an organic reaction medium; and b) forming an oligomer product in a reaction zone.

A process comprising a heterogenous reaction between a solid metal organic framework supported heteropolyacid catalyst and a hydrocarbon feed to form a modified hydrocarbon stream. The modified hydrocarbon stream comprises essentially of C6+ hydrocarbons.