20073-80-7

Upstream product

• 1426580-49-5 N,N'-bis-(2,3-dimethyl-but-2-enyloxy)terephthalamide 
• 100-20-9 terephthaloyl chloride 
• 120-61-6 1,4-benzenedicarboxylic acid dimethyl ester 

Downstream Products

• 64125-08-2 5,5'-bis-methoxycarbonylmethyl-3,3'-p-phenylene-bis-[1,4,2]dioxazole-5-carboxylic acid dimethyl ester 
• 106-50-3 1,4-phenylenediamine 
• 22159-13-3 3,3′-(1,4-phenylene)bis(1,4,2-dioxazol-5-one) 
• 15568-81-7 5,5,5',5'-tetramethyl-3,3'-p-phenylene-bis-[1,4,2]dioxazole 
• 30240-10-9 Diacetylterephthalohydroxamat 

Relevant academic research and scientific papers

Synthetic Modularity of Protein-Metal-Organic Frameworks

Previously, we adopted the construction principles of metal-organic frameworks (MOFs) to design a 3D crystalline protein lattice in which pseudospherical ferritin nodes decorated on their C3 symmetric vertices with Zn coordination sites were connected via a ditopic benzene-dihydroxamate linker. In this work, we have systematically varied both the metal ions presented at the vertices of the ferritin nodes (Zn(II), Ni(II), and Co(II)) and the synthetic dihydroxamate linkers, which yielded an expanded library of 15 ferritin-MOFs with the expected body-centered (cubic or tetragonal) lattice arrangements. Crystallographic and small-angle X-ray scattering (SAXS) analyses indicate that lattice symmetries and dimensions of ferritin-MOFs can be dictated by both the metal and linker components. SAXS measurements on bulk crystalline samples reveal that some ferritin-MOFs can adopt multiple lattice conformations, suggesting dynamic behavior. This work establishes that the self-assembly of ferritin-MOFs is highly robust and that the synthetic modularity that underlies the structural diversity of conventional MOFs can also be applied to the self-assembly of protein-based crystalline materials.

A Metal Organic Framework with Spherical Protein Nodes: Rational Chemical Design of 3D Protein Crystals

We describe here the construction of a three-dimensional, porous, crystalline framework formed by spherical protein nodes that assemble into a prescribed lattice arrangement through metal-organic linker-directed interactions. The octahedral iron storage e

Tunable and Cooperative Thermomechanical Properties of Protein-Metal-Organic Frameworks

We recently introduced protein-metal-organic frameworks (protein-MOFs) as chemically designed protein crystals, composed of ferritin nodes that predictably assemble into 3D lattices upon coordination of various metal ions and ditopic, hydroxamate-based li

Hydroxamate Titanium-Organic Frameworks and the Effect of Siderophore-Type Linkers over Their Photocatalytic Activity

The chemistry of metal-organic frameworks (MOFs) relies on the controlled linking of organic molecules and inorganic secondary building units to assemble an unlimited number of reticular frameworks. However, the design of porous solids with chemical stabi

New emissive organic molecule based on pyrido[3,4-g]isoquinoline framework: Synthesis and fluorescence tuning as well as optical waveguide behavior

In this paper we report the synthesis and crystal structures of emissive organic molecule (1a) based on pyrido[3,4-g]isoquinoline framework as well as its isomers 1b and 1c. The emission quantum yields decrease after transformation of pyridine moieties in 1a into the cyclic-amides in 1b and 1c. The fluorescent spectral results reveal that 1a, 1b, and 1c exhibit no AIE behavior. This is tentatively attributed to intramolecular weak C?H interactions, which may impede the intramolecular rotations based on the crystal structures of 1a and 1c. Interestingly, 1a, 1b, and 1c are emissive in the solid state, and among them 1a possesses the highest emission quantum yield (0.22). Moreover, the fluorescence of 1a in solution and solid state can be reversibly tuned by reactions with trifluoroacetic acid and triethylamine. Microarea PL studies reveal that microrods of 1a and these after exposure to HCl gas show typical waveguide behavior.

Synthesis of hydroxamic acids by using the acid labile O-2-methylprenyl protecting group

Coupling of carboxylic acids with O-2-methylprenyl hydroxylamine provided O-protected hydroxamic acids, which could be deprotected by treatment with trifluoroacetic acid (TFA) in dichloromethane giving volatile by-products. Protected hydroxamic acids could be N-arylated or alkylated followed by deprotection to give N-substituted hydroxamic acids. Georg Thieme Verlag KG · Stuttgart · New York.

Monohydroxamic acids and bridging dihydroxamic acids as chelators to ruthenium(iii) and as nitric oxide donors: Syntheses, speciation studies and nitric oxide releasing investigation

The synthesis and spectroscopic characterisation of novel mononuclear RuIII(edta)(hydroxamato) complexes of general formula [Ru(H 2edta)(monoha)] (where monoha = 3- or 4-NH2, 2-, 3- or 4-Cl and 3-Me-phenylhydroxamato), as well as the first example of a Ru III-N-aryl aromatic hydroxamate, [Ru(H2edta)(N-Me-bha)] ·H2O (N-Me-bha = N-methylbenzohydroxamato) are reported. Three dinuclear RuIII complexes with bridging dihydroxamato ligands of general formula [{Ru(H2edta)}2(μ-diha)] where diha = 2,6-pyridinedihydroxamato and 1,3- or 1,4-benzodihydroxamato, the first of their kind with RuIII, are also described. The speciation of all of these systems (with the exception of the Ru-1,4-benzodihydroxamic acid and Ru-N-methylbenzohydroxamic systems) in aqueous solution was investigated. We previously proposed that nitrosyl abstraction from hydroxamic acids by Ru III involves initial formation of RuIII-hydroxamates. Yet, until now, no data on the rate of nitric oxide (NO) release from hydroxamic acids has been published. We now describe a UV-VIS spectroscopic study, where we monitored the decrease in the ligand-to-metal charge-transfer band of a series of RuIII-monohydroxamates with time, with a view to gaining an insight into the NO-releasing properties of hydroxamic acids. The Royal Society of Chemistry.