4073-75-0

Upstream product

• 792-74-5 4,4'-biphenyldicarboxylic acid dimethyl ester 
• 787-70-2 4,4'-diphenic acid 
• 302-01-2 hydrazine 

Downstream Products

• 1206901-81-6 ((C₆H₄)C(O)NHNCH(C₆H₄)OH)2 
• 1441314-99-3 1,1′-Biphenyl-4,4′-dicarboxylic acid, bis-(2-pyridinylmethylene)-hydrazide 
• 1569315-30-5 N,N'-bis[4-hydroxybenzylidene]biphenyl-4,4'-dicarbohydrazide 
• 1569315-31-6 N,N'-bis[3-hydroxy-4-methoxybenzylidene]biphenyl-4,4'-dicarbohydrazide 
• 1569315-32-7 N,N'-bis[2,4-dimethoxybenzylidene]biphenyl-4,4'-dicarbohydrazide 
• 341945-19-5 N,N'-bis[4-chlorobenzylidene]biphenyl-4,4'-dicarbohydrazide 
• 341945-09-3 N,N'-bis[3-nitrobenzylidene]biphenyl-4,4'-dicarbohydrazide 

Relevant academic research and scientific papers

Subcomponent Self-Assembly of Covalent Metallacycles Templated by Catalytically Active Seven-Coordinate Transition Metal Centers

Coordination geometries of transition metals play vital roles in the self-assembly process of supramolecular coordination complexes. Herein, seven-coordinate 3d metal ions were applied as templates and catalytically active sites for subcomponent self-assembly that resulted in a new category of covalent metallacycles. Single-crystal structures showed that the sizes, configurations, and functionalization of covalent metallacycles could be tuned by the selection of rigid dihydrazide, transition metal ions, and prefunctionalized subcomponents, respectively. Moreover, metallacycles decorated with carboxylic groups could be employed as precursors to prepare aerogels through hierarchical self-assembly, which also exhibited high catalytic activity for cycloaddition of CO2 into cyclic carbonates.

Narcissistic self-sorting in self-assembled cages of rare earth metals and rigid ligands

Highly selective, narcissistic self-sorting can be achieved in the formation of self-assembled cages of rare earth metals with multianionic salicylhydrazone ligands. The assembly process is highly sensitive to the length of the ligand and the coordination geometry. Most surprisingly, high-fidelity sorting is possible between ligands of identical coordination angle and geometry, differing only in a single functional group on the ligand core, which is not involved in the coordination. Supramolecular effects allow discrimination between pendant functions as similar as carbonyl or methylene groups in a complex assembly process. Equals among equals: The formation of self-assembled cages of rare earth metals and ligands proceeds through highly selective, narcissistic self-sorting. Pendant functionalities as similar as carbonyl and methylene groups are discriminated in this complex assembly process.

Reversible multicomponent self-assembly mediated by bismuth ions

Bi(iii) ions are capable of reversible, multicomponent self assembly with suitable tris-coordinate ligands. The nature of the self-assembled structures observed are dependent on the ligand coordination geometry, ligand protonation state and Bi concentration. These assemblies can exploit the maximum number of coordination sites at the Bi vertices (nine), and the self-assembly process has been studied by 1D NMR, Diffusion NMR, ESI-MS and X-ray crystallographic analysis. V-shaped coordinating ligands reversibly form discrete M 2L4, M2L3, and M2L 2 complexes dependent on ligand/bismuth concentration, whereas a linear coordinating ligand forms a single discrete M3L3 assembly.

Self-assembly of cerium-based metal-organic tetrahedrons for size-selectively luminescent sensing natural saccharides

New Ce-based Werner type tetrahedrons were achieved for size-selectively luminescent detection of natural carbohydrates through incorporating amide groups as both the multiple hydrogen bonding triggers and binding-signalling transductor.