89-05-4Relevant articles and documents
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Cava et al.
, p. 2524,2525 (1960)
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Structural diversity and luminescent sensing of three coordination polymers based on the hydrolysates of N,N′-bis(3,5-dicarboxylatophenyl)pyromelliticdi-imide)
Fan, Liming,Wang, Jiang,Zhao, Li,Zhang, Yujuan,Wang, Xiaoqing,Hu, Tuoping,Zhang, Xiutang
, p. 54 - 61 (2018)
Based on the hydrolysates of N,N′-bis(3,5-dicarboxylatophenyl)pyromelliticdi-imide) (H4L) and 1,3-bis(imidazol-1-ylmethyl)benzene (bimb), three coordination polymers, namely, {[Zn(BTC)0.5(bimb)]·4H2O}n (1), [Cu(BTC)0.5(bimb)]n (2), and {[Cd(AIP)(H2O)]·H2O}n (3), have been obtained under solvothermal conditions. The possible hydrolysis mechanism of H4L was investigated here. Structural analyses reveal that complex 1 is a 3D (4,4)-c {64.82}{66}2-bbf net. Complex 2 displays a 2D 4-c {32.62.72}-kgm sheet. While complex 3 exhibits a 3D (3,6)-c {4.62}2{42.610.83}-rtl net based on binuclear {Cd2(COO)4} SBUs. Besides, luminescent sensing investigation indicated that 1 and 3 exhibit highly sensitive and selective sensing of chromate anions in aqueous solution.
Hydrothermal Generation of Conjugated Polymers Using the Example of Pyrrone Polymers and Polybenzimidazoles
Gl?cklhofer, Florian,Mezzavilla, Stefano,Taublaender, M. Josef,Thiele, Sophia,Unterlass, Miriam M.
supporting information, p. 15050 - 15060 (2020/05/18)
Various polyimides and polyamides have recently been prepared via hydrothermal synthesis in nothing but H2O under high-pressure and high-temperature conditions. However, none of the prepared polymers feature a truly conjugated polymer backbone. Here, we report on an expansion of the synthetic scope of this straightforward and inherently environmentally friendly polymerization technique to the generation of conjugated polymers. Selected representatives of two different polymer classes, pyrrone polymers and polybenzimidazoles, were generated hydrothermally. We present a mechanistic discussion of the polymer formation process as well as an electrochemical characterization of the most promising product.
Method for preparing pyromellitic acid through catalytic oxidation using Anderson heteropoly acid
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Paragraph 0011; 0037; 0038; 0039 0040; 0041; 0041-0046, (2018/07/30)
The invention discloses a method for preparing pyromellitic acid through catalytic oxidation using Anderson heteropoly acid. The method comprises the following specific steps: 1), mixing mesitylene, acatalyst, an additive and a solvent, and then performin an oxidation reaction under the action of an oxidant, wherein the oxidation reaction temperature is 80-130 DEG C, the gauge pressure is 1.0-4.0MPa, and the reaction time is 7-24h; 2), after the oxidation reaction is completed, filtering to remove the catalyst, adding an extracting reagent and water, and extracting to obtain an organic phaseand an aqueous phase, and concentrating and purifying the organic phase to obtain the pyromellitic acid, wherein the catalyst is the Anderson-type heteropoly acid. The reaction condition is mild, hydrogen peroxide, air or oxygen is used as the oxidant, environment friendliness is achieved, the product yield is high, the catalyst reactivity is high, the specificity is good, recycling is achieved, and operation is simple, so that the method is suitable for industrial production.
