Block copolymers (BCPs) are interesting precursors to nanoporous films with well-defined and tunable porosities. So far, BCPs with polystyrene (PS) as the majority block are predominantly used, hindering the using of produced nanoporous films at elevated temperatures. Herein, we propose to use B...

Redispersible polystyrene (PS) latexes were prepared through surfactant-free emulsion polymerization (SFEP), employing only 0.54 mol% (with respect to styrene) of the monomer 2-dimethylaminoethyl methacrylate hydrochloride (DMAEMAH+Cl−) and 0.25 mol% of the initiator 2,2′-azobis[2-(2-imidazolin...

Cloud-point behaviors at pressure up to 230 MPa and temperatures up to 463 K were measured for poly(2-dimethylaminoethyl methacrylate) [P(2-DMAEMA)] in CO2 (carbon dioxide), C3H8 (propane), C3H6 (propylene), C4H10 (butane), C4H8 (1-butene), and CH3OCH3 [dimethyl ether (DME)], as well as for the ...

A new strategy of substituent-directed reductive ring-opening of aza-bridged pyridoazepine systems was designed and developed. The direction of the ring-opening is determined by the electron negativity of substituents attached to the nitrogen atoms. A plausible mechanism involving iminiums as th...

New four acid azo dyes were synthesized from aromatic amines containing acidic group and 3-(1,3-benzothiazol-2-yl) naphthalen-2-ol by diazotization and coupling reaction. These dyes were characterized by FTIR, 1H NMR and mass spectral analysis. Effect of solvent polarity and role of pH on photo ...

Pigment Yellow 101 analogs have been synthesized from 3-(1,3-benzothiazol-2-yl)-2-hydroxynaphthalene-1-carbaldehyde by combining with different aromatic diamines. Out of the four synthesized aldazines two show pigment properties and remaining show properties like dyes. Existence of excited state...

A series of novel Schiff’s bases have been synthesized from 3-(1,3-benzothiazol-2-yl)-2-hydroxynaphthalene-1-carbaldehyde. The presence of hydroxyl group ortho to the benzothiazolyl group as well as the imine linkage lead to the occurrence of excited state intramolecular proton transfer process...

The compound benzyl N-(1,3-benzothiazol-2-yl)-N-benzylcarbamate was synthesized from 2-aminobenzothiazole and characterized by FT-IR, NMR, UV–Vis, X-ray diffraction and quantum chemical calculations. The compound crystallizes in the monoclinic, space group P21, with unit cell parameters of a = ...

Novel 1,3-diphenyl-5-(benzothiazol-2-yl)-6-R-verdazyls, stable free radicals, were synthesized from the corresponding formazans by alkylation followed by cyclization and oxidation of the intermediate leucoverdazyls (yields 78–93%). The radicals were characterized by ESR, electronic and IR spect...

The azo dye 1,3-benzothiazol-2-yl-(phenylhydrazono)acetonitrile (BTPA) was synthesized and structurally characterized by different spectroscopic techniques, including two dimensional 1H and 13C NMR as well as optical absorption and emission spectra. The obtained spectroscopic results and semiemp...

The acyl derivatives enantiomers of the Morita–Baylis–Hillman adduct (±)-2-[Hydroxy(m-nitrophenyl)methyl]acrylonitrile (1) and (±)-2-[Hydroxy(p-nitrophenyl)methyl]acrylonitrile (2) were efficiently separated by kinetic resolution catalyzed by lipase B from Candida antarctica giving (R)-1 and...

A general and easy method for the synthesis of 4,6-disubstituted-3-cyano-2(1H)-iminopyridine or 3-amino-6-chloro-1-aryl-1H-benzo[h]chromen-2-yl cyanide derivatives in the presence of high surface area MgO as a highly effective heterogeneous base catalyst is described. These compounds were synthe...

The possible catalytic effects of 2-pyridone and its tautomeric form 2-hydroxypyridine on the aminolysis reaction of p-nitrophenyl acetate with n-butylamine have been theoretically studied at the B3LYP/6-31+G(d,p) level of theory. Solvent effect of chloroform is assessed using the MP2/CPCM/6-31+...

In present experimental and theoretical studies on a synthesized α-cyanovinyl containing meso-substituted dipyrromethane: 1,9-bis(2-cyano-2-ethoxycarbonylvinyl)-5-(2-nitrophenyl)-dipyrromethane (3) molecular structure, hydrogen-bonding, chemical reactivity and first hyperpolarizability have bee...

A series of ten new 5-arylazo-6-hydroxy-4-(4-nitrophenyl)-3-cyano-2-pyridone dyes was synthesized using a classical reaction for the synthesis of azo compounds. The structure of the dyes was confirmed by melting point, elemental analysis, UV–vis, FT-IR, 1H NMR and 13C NMR spectroscopic techniqu...

The synthesis and properties of new monoazo dyes derived from the diazonium salts of 2-trifluoromethyl phenylamine and 4-chloro-3-trifluoromethyl phenylamine are considered.

A practical and efficient protocol for Ag/Ru-cocatalyzed regioselective C-H amination of 8-hydroxyquinoline esters with pyrazoles was developed, This reaction proceeded smoothly via a photoredox-mediated direct C-H/N-H oxidative coupling process. The remarkable features of this reaction include ...

Bromodomain-containing protein 4 (BRD4), an epigenetic reader of acetyl lysine, has emerged as a promising therapeutic target for many diseases including cancer, inflammation and heart failure. Our previous study reported that nitroxoline, an FDA approved antibiotic, showed potential BRD4 inhibi...

The charge transfer process within the electrolyte system is an active area for further improving the conversion efficiency of the dye-sensitized solar cell (DSSC). In this work, micelle formed by cationic surfactant cetylpyridinium (CP) chloride was used in the electrolyte to enhance the ion tr...

Haloacetic acids, formed in drinking water during disinfection by chlorination, pose significant risks to human health. Semiequilibrium dialysis and ultrafiltration experiments were used to examine the partitioning of the five regulated haloacetic acids (HAA5) viz. chloro-, dichloro-, trichloro-...