37055-19-9

Upstream product

• 576-83-0 2,4,6-trimethylphenyl bromide 
• 108-67-8 1,3,5-trimethyl-benzene 
• 4482-03-5 bimesityl 

Downstream Products

• 868046-56-4 5',5''-bis(4-carboxyphenyl)-2',2'',4',4'',6',6''-hexamethyl-[1,1':3',1'':3'',1'''-quaterphenyl]-4,4'''-dicarboxylic acid 
• 1093856-23-5 3,3',5,5'-tetraphenylbimesityl 
• 809274-33-7 3,3′,5,5′-tetrakis(4-pyridyl)bimesityl 
• 868046-55-3 3,3',5,5'-tetrakis(4-formylphenyl)bimesityl 
• 868046-60-0 3,3',5,5'-tetrakis(4'-formylbiphenyl-4-yl)bimesityl 

Relevant academic research and scientific papers

Ligand controlled structure of cadmium(II) metal-organic frameworks for fluorescence sensing of Fe3+ ion and nitroaromatic compounds

Three cadmium(II) metal-organic frameworks (MOFs) based on tetracarboxylate ligands, namely [Cd2(TTTA)(DMF)3]·2DMF (1), [Cd2(TB)(H2O)4]·3DMF·H2O (2) and [Cd(TEB)0.5]·2DMF·4H2O (3) have been designed and synthesized. Complex 1 is a 2-dimensional (2D) 3,4-connected network with 3,4L13 topology, complex 2 features a 3-dimensional (3D) 3,4-connected tfa topology with a 2-fold interpenetrating structure and complex 3 has a 3D 4-connected dia topology with a 4-fold interpenetrating structure. Interestingly, 2 exhibits permanent pores and selective adsorption of CO2 over CH4. In addition, 2 shows fluorescence sensing of Fe3+ ion and rapid detection of nitroaromatic compounds (NACs) through fluorescence quenching.

Anchor installation on porous polymer networks (PPNs) for high CO2 uptake

Porous polymer networks (PPNs) is an emerging category of advanced porous materials that are of interest for carbon capture due to their high physicochemical stability and convenient functionalization process. Herein, a series of alkylamine tethered PPN-200 (PPN-200-DETA, PPN-200-TETA and PPN-200-TAEA) were prepared through a novel post-synthetic strategy. Due to the presence of alkylamine groups, PPN-200-TAEA has CO2 uptakes of 42 cm3/g (at 298 K and 0.15 bar) and 55 cm3/g (at 298 K and 1 bar), and a calculated CO2/N2 selectivity of 289, which demonstrate its potential in postcombustion carbon capture application.

Synthesis, structure, computational modeling, and biological activity of two novel bimesitylene derivatives

Tetrazole- and nitrile-containing bimesitylene derivatives with potential use in coordination chemistry were synthesized and characterized, and their structural particularities are discussed. For the bimesitylene bistetrazole derivative, geometry optimization was carried out by quantum-chemical calculations using density functional theory together with vibrational frequencies, natural bond orbitals, and highest occupied molecular orbital (HOMO)–lowest unoccupied molecular orbital (LUMO) calculations. The newly synthesized bimesitylene derivatives were also evaluated for their antimicrobial activity against three different reference strains, namely Escherichia coli, Staphylococcus aureus, and Candida albicans.

Rational design and synthesis of porous polymer networks: Toward high surface area

Head-on polymerization of tetrahedral monomers inherently imparts interconnected diamond cages to the resulting framework with each strut widely exposed. We have designed and synthesized a series of 3,3′,5,5′- tetraethynylbiphenyl monomers, in which the two phenyl rings are progressively locked into a nearly perpendicular position by adding substituents of different size at 2, 2′, 6, and 6′ positions, as evident from single crystal structures. Computational simulation suggests that these monomers, though not perfectly regular tetrahedra, could still be self-polymerized into three-dimensional frameworks with the same topology. Indeed, five porous polymer networks (PPNs) have been successfully synthesized with these newly designed monomers through Cu(II)-promoted Eglinton homocoupling reaction. Among them, PPN-13 shows exceptionally high Brunauer-Emmett-Teller (BET) surface area of 3420 m2/g. The total hydrogen uptake is 52 mg/g at 40 bar and 77 K, and the total methane uptake is 179 mg/g at 65 bar and 298 K.

Three-dimensional porphyrin-based covalent organic frameworks with tetrahedral building blocks for single-site catalysis

Two three-dimensional (3D) porphyrin covalent organic frameworks, PCOF-1 and PCOF-2, were synthesized via imine condensation of a planar porphyrin tetramine (TAPP or TABPP) and a rigid tetrahedral aldehyde based on the steric hindrance of 3,3′,5,5′-tetrakis(4-formylphenyl)bimesityl (TFBM). The structures of PCOF-1 and PCOF-2 were studied by FT-IR and 13C CP-MAS solid state NMR spectroscopy. Powder X-ray diffraction patterns revealed obvious crystallinity with two intense peaks at 3.28° and 3.75° for PCOF-1, and 2.63° and 2.98° for PCOF-2. Structural simulation confirmed their 3D rutile type (pts) topological structures with two different pore sizes. X-ray single crystal diffraction revealed a distorted tetrahedral structure for the building block TFBM with two dihedral angles of 119° and 107.8°, and a planar square structure for the model compound (MC) with an outspread angle of 176.5°. PCOF-1 and PCOF-2 exhibited Brunauer-Emmett-Teller (BET) surface areas of 316 and 234 m2 g-1, respectively. The morphologies of PCOF-1 and PCOF-2 were investigated by scanning electron microscopy and transmission electron microscopy methods. PCOF-1 and PCOF-2 showed a high thermal stability up to 420 °C without decomposition through thermogravimetric analysis (TGA), and high chemical stability with no obvious mass loss after three days of immersion in various solutions. Due to the large surface area and the appropriate pore size, PCOF-Fe exhibited excellent biocatalytic catalytic performance, while PCOF-Co exhibited good electrocatalytic activity towards oxygen evolution reactions. These results indicate that 3D porphyrin-based COFs constructed from the tetrahedral building block with steric hindrance are promising candidates for single-site catalysis.

Nondoped pure-blue OLEDs based on amorphous phenylenevinylene- functionalized twisted bimesitylenes

The twisted bimesitylene scaffold hinders crystallization and imparts amorphous nature to the oligophenylenevinylenes (OPVs) generated by 2- and/or 4-fold functionalization. The resultant phenylenevinylenes 1?5 with unique molecular topology exhibit excellent thermal and solid-state luminescence properties. The amorphous nature permits their application as pure-blue emissive materials in OLEDs. Under nondoped conditions, the device performances observed surpass those for analogous and simple oligophenylenevinylenes known so far; for example, the device based on OPV 2 as an emitting material and structurally analogous Bim-DPAB as a hole-transporting material yields pure-blue electroluminescence with an external quantum efficiency of ca. 4.70% at 20 mA/cm2, which is higher than those reported for nondoped pure-blue OPV emitters.

De novo design for functional amorphous materials: Synthesis and thermal and light-emitting properties of Twisted anthracene-functionalized bimesitylenes

The unique structural attributes inherent to D2dsymmetric rigid tetraarylbimesityls render their close packing in the solid state difficult. We have exploited the indisposed tendency of such modules based on the bimesityl scaffold toward crystallization to design a novel class of amorphous functional materials with high glass transition temperatures and thermal stability (T d > 400 °C). It is shown that a variety of 2- and 4-fold anthracene-functionalized bimesityls, 1-7, that exhibit excellent amorphous properties (Tg = ca. 190-330 °C) can be readily prepared via facile Pd(0)-mediated cross-coupling strategies. As the communication between the bimesityl core and the anchored anthracenes is negligible or only marginal, the trends observed for luminescence of model constituent anthracenes are reproduced in the condensed- phase photoluminescence and electroluminescence of 1-7. In other words, the emission characteristics, i.e., λmax and quantum yields, are readily modulated via appropriate modification of the fluorophores. The functional behavior of this unique class of amorphous materials based on the bimesityl scaffold is demonstrated by fabrication of OLED devices. The 2-fold functionalized derivatives 1 and 2 lend themselves to sublimation techniques, so that the electroluminescence is captured with high efficiencies at low turn-on voltages (3.5-6.5 V). The device ITO/NPB (400 A)/1% 2:MADN (400 A)/TPBI (400 A)/LiF (10 A)/AI (1500 A) for 2 yields the highest luminance of ～13 900 cd/m2 at 17.5 V, a maximum luminance efficiency of ～7.4 cd/A at 4.5 V, and a power efficiency of ～5.3 Im/W at 4.0 V. Further, at a brightness of 800 cd/m 2 and a current density of 13.8 mA/cm2, the device is found to exhibit excellent luminance efficiency of 5.8 cd/A, external quantum efficiency of 4.3% with a power efficiency of 2.2 Im/W, and pure blue light with a CIExy (x= 0.13, y= 0.18). The performance characteristics of the devices fabricated for 1 and 2 are remarkable. Although the 4-fold functionalized systems did not permit sublimation leading to spin-coating as a means for device fabrication, the observed electroluminescence for 4 and 5 attests to a broader scope and applicability of this new category of amorphous molecules for application in OLEDs.

Three-dimensional four-connecting organic scaffolds with a twist: Synthesis and self-assembly

We have synthesized a novel class of four-connecting three-dimensional molecular scaffolds 2-5 based on biaryls for supramolecular self-assembly. The X-ray crystal structure analysis of 2 with ethanol reveals a novel O-H...O hydrogen-bonded helical self-a

Corundum, diamond, and PtS metal-organic frameworks with a difference: Self-assembly of a unique pair of 3-connecting D2d-symmetric 3,3′,5,5′-tetrakis(4-pyridyl)bimesityl

(Chemical Equation Presented) A ligand with a twist: The coordination of distorted-tetrahedral D2d-symmetric tetrapyridylbimesityl (tpb) with Oh, Td, and D4h metal centers leads to metal-organic frameworks with