Two copper(II) complexes, namely [Cu(HL)Cl] (1) and [Cu(HL)Br](2),whereHListhemultidentateSchiffbaseN-[(2-oxy-acetate)benzyl]-2-aminothanol, were synthesized and fully characterized. The Cu II ions in 1 and 2 are pentacoordinate and the coordination arrangement is best described as distorted square-pyramidal. The degradation

The efficient photocatalytic degradation of methyl orange was achieved by exploring two simple copper(II) Schiff base complexes [{Cu(HL)(CH3OH)}2] (1) and [Cu(HL)2] (2) (H2L = N-salicylidene-2-aminoethanol) as photo-Fenton-like catalysts. Both 1 and 2 exhibited excellent catalytic performance without an acidification process, and the mononuclear complex 2 functioned better than the dinuclear complex 1. The results suggest that 2 is advantageous for catalyzing efficient degradation of azo dye and has potential application in the effective treatment of dye-polluted water.

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Poly(phthalazinone ether nitrile ketone)s (PPENK) was modified with NaOH in N,N-dimethyl acetamide (DMAc) in order to find a hydrophilic resin applied in heat-resistant water-borne coatings. The properties of hydrolyzates (HPPENK) in different hydrolysis time were characterized by FT-IR and 1H-NMR, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), contact angle (water) as well as solubility measurements. The results indicated that, along with the prolonged hydrolysis time, nitrile groups conversion ratio and glass transition temperature (T g ) of hydrolyzates increase, whereas weight loss ratio of HPPENK decreases. As expected, the hydrophilicity of HPPENK was improved greatly, e.g., when CN conversion ratio was 93.82%, the water contact angles were found to decrease from 75.3° of PPENK to 54.4° of HPPENK. HPPENKc dispersion has no separation more than 20 days in terms of shelf-life.