861023-19-0

Upstream product

• 128-63-2 1,3,6,8-tetrabromopyrene 
• 50978-45-5 3-oxobenzo[d]isothiazole-2(3H)-carbaldehyde 1,1-dioxide 
• 129-00-0 pyrene 
• 28496-11-9 1,3,6,8-tetracyanopyrene 

Relevant academic research and scientific papers

Palladium-Catalyzed Butoxycarbonylation of Polybromo(hetero)arenes: A Practical Method for the Preparation of (Hetero)arenepolycarboxylates and -carboxylic Acids

The palladium-catalyzed alkoxycarbonylation of polybromo (hetero)arenes was investigated systematically. The results show that cheap and readily available in situ Pd(OAc) 2/ rac -BINAP catalyst can catalyze the butoxycarbonylation of various polybromo(hetero)arenes efficiently, and gave (hetero)arenepolycarboxylates with moderate to high yield (59-94%). Using this method, two new compounds, 4,4'-bis(butoxycarbonyl)-1,1'-bi-2-naphthol and dibutyl [2,2'-bipyrimidine]-5,5'-dicarboxylate, are reported for the first time. In addition, the gram-scale preparation of carboxylate and carboxylic acids was successful performed by butoxycarbonylation followed by hydrolysis. This shows the wide scope of substrates and practical applications of the Pd(OAc) 2/ rac -BINAP catalytic system. Moreover, these carboxylic acids and carboxylates can be used as ligands or structural units to construct MOFs, metal complexes, and COFs etc.

Ester-functionalized pyrene derivatives: Effects of ester substituents on photophysical, electrochemical, electrochromic, and electrofluorochromic properties

Multifunctional electrochromic materials are widely used in optoelectronic devices. Pyrene is a π-electron-rich group with fluorescence properties. Ester-functionalized pyrene derivatives potentially have interesting multifunctional properties such as electrochromic and electrofluorochromic characteristics. In this work, mono-, di-, tri-, and tetra-ester-substituted pyrene derivatives were synthesized, and the effects of the number of ester substituents on their photophysical, electrochemical, electrochromic, and electrofluorochromic properties were investigated. The number of ester substituents significantly affected these properties. An increase in the number of ester substituents on the pyrene caused red shifts in the absorption and emission spectra, a decrease in the driving voltage, and changes in the electrochromic colored states and electrofluorochromic performance. Mono-, di-, and tri-ester-functionalized pyrene derivatives showed good electrochromic properties, namely good switching stabilities, high optical contrasts, rapid responses, and high coloration efficiencies. Mono- and tri-ester-functionalized pyrenes gave good electrofluorochromic performances with reversible fluorescence quenching–fluorescence restoring between colored and bleached states during the electrochromic process. Ester-functionalized pyrene derivatives were successfully used in two functional digital displays with vivid colors. These results show that ester-functionalized pyrene derivatives with good electrochromic and electrofluorochromic properties are promising candidates for use in various applications, e.g., digital displays, organic electroluminescence displays, electronic shelf labels, energy-saving windows, and electronic paper.

Squeezing the box: Isoreticular contraction of pyrene-based linker in a Zr-based metal-organic framework for Xe/Kr separation

Isoreticular synthesis is a powerful tool to enhance specific attributes of a metal-organic framework (MOF). While the isoreticular expansion of MOF structure are prevalent in the literature, the compression of a topology holds great promise for separations due to the contracted pore apertures and/or cavities. Herein, we report the synthesis, characterization and Xe/Kr separation capability of a new Zr-based MOF, NU-1106, connected by the tetratopic linker 1,3,6,8-pyrene tetracarboxylate, which exhibits a compressed ftw topology compared to the extended ones reported previously. NU-1106 showed selective uptake of Xenon over Krypton, providing the potential for use for separations.

MOF COMPOSITIONS FOR SELECTIVE SEPARATION OF HYDROCARBONS

The present invention relates to novel metal-organic frameworks (MOFs) comprising tetratopic ligands with small pore apertures. The present invention further relates to methods of utilizing the MOFs of the invention to separate hydrocarbons through adsorptive processes.

Two Li-Zn cluster-based metal-organic frameworks: Strong H2/CO2 binding and high selectivity to CO2

Two metal-organic frameworks (MOFs) {(Me2NH2)[ZnLi(PTCA)(H2O)]}nn{3DMFC4H8O2 4H2O} (1) and {(Me2NH2)[ZnLi(PTCA)]}nn{3DMF 5H2O} (2) have been constructed from Li-Zn clusters and pyrene-1,3,6,8-tetracarboxylic acid (H4PTCA) under solvothermal conditions. Gas sorption measurements have revealed that the pore of desolvated 2 (2d) can strongly interact with H2 and CO2, with high H2 and CO2 adsorption heats of 15.3 and 51.9 kJ/mol, respectively. Furthermore, 2d can selectively adsorb CO2 over N2and CH4, with high adsorption selectivity of CO2/N2 and CO2/CH4.

Modulation of Gas Sorption Properties through Cation Exchange within an Anionic Metal–Organic Framework

A novel 3D anionic metal–organic framework (MOF) of (Me2NH2)4[Ni8(PTCA)4(μ3-OH)4(H2O)4](DMF)5(H2O)13 (H4PTCA=pyrene-1,3,6,8-tetracarboxylic acid) has been synthesized, in which Me2NH2 + can be exchanged by Li+ ions. The results of gas sorption measurements indicate that the desolvated MOFs both before and after Li+ exchange show highly selective adsorption for CO2 over CH4 and N2 gases, and the Li+-exchanged MOF exhibits enhanced CO2, CH4, and H2 storage properties.

A unique magnesium-based 3D MOF with nanoscale cages and temperature dependent selective gas sorption properties

A porous Mg-based 3D metal-organic framework with unique nanoscale cages and two-fold interpenetrating pcu nets has been synthesized and characterized. It shows gas-uptake capacities for N2, H2, O2 and CO2 at low temperatures and selective adsorption of CO 2 over O2 and N2 at room temperature. The Royal Society of Chemistry 2013.