Super acid-catalyzed polymerization of phenothiazine and modified isatin

IF 0.125 Applied Petrochemical Research Pub Date : 2019-06-11 DOI:10.1007/s13203-019-0229-x

Bharatraj Kasi, Vajjiravel Murugesan, Neelakandan Kaliaperumal

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引用次数: 5

Abstract

Novel substituted series of aromatic copolymers was obtained by one-spot, metal-free super acid-catalyzed one-step polymerization of substituted isatin and phenothiazine. The polymerization reaction was performed at room temperature in the presence of Bronsted superacid (trifluoromethanesulfonic acid) and methylene chloride which condenses the compounds consists of carbonyl group (aldehydes and ketones) and aromatic rings to yield the polymers. Super acid catalyst has several advantages including the reaction proceeding at room temperature and great synthetic versatility. The obtained polymers have good solubility in common organic solvents. The polymers were purified by repeated precipitations with methanol. Polymers (P1–P3) were completely characterized by FT-IR, ¹H NMR, TGA, and UV–visible, fluorescence and cyclic voltammetry techniques. Polymers (P1–P3) possessed excellent thermal stability up to 300?°C and have absorbance and emission maximum at 557 and 630?nm, respectively. The optical and electrochemical properties of these polymers revealed that it could be one of the capable materials for applications in optoelectronic device and in the area of proton exchange membrane fuel cell.

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超强酸催化吩噻嗪与改性isatin的聚合

以取代isatin和吩噻嗪为原料，采用超强酸催化一步法，单点无金属聚合，得到了新的取代系列芳香族共聚物。聚合反应在室温下，在Bronsted超强酸(三氟甲烷磺酸)和二氯甲烷存在下进行，二氯甲烷缩合羰基(醛和酮)和芳香环组成的化合物，生成聚合物。超强酸催化剂具有常温下反应进行、合成通用性强等优点。所得聚合物在普通有机溶剂中具有良好的溶解度。用甲醇反复沉淀纯化聚合物。聚合物(P1-P3)通过FT-IR、1H NMR、TGA、uv -可见、荧光和循环伏安等技术进行了完整的表征。聚合物(P1-P3)具有优异的热稳定性，最高可达300?在557°C和630°C时吸光度和发射值最大。分别nm。这些聚合物的光学和电化学性能表明，它可能是光电子器件和质子交换膜燃料电池领域的有潜力的材料之一。

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来源期刊

Applied Petrochemical Research ENGINEERING, CHEMICAL-

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0.00%

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审稿时长

13 weeks

期刊介绍： Applied Petrochemical Research is a quarterly Open Access journal supported by King Abdulaziz City for Science and Technology and all the manuscripts are single-blind peer-reviewed for scientific quality and acceptance. The article-processing charge (APC) for all authors is covered by KACST. Publication of original applied research on all aspects of the petrochemical industry focusing on new and smart technologies that allow the production of value-added end products in a cost-effective way. Topics of interest include: • Review of Petrochemical Processes • Reaction Engineering • Design • Catalysis • Pilot Plant and Production Studies • Synthesis As Applied to any of the following aspects of Petrochemical Research: -Feedstock Petrochemicals: Ethylene Production, Propylene Production, Butylene Production, Aromatics Production (Benzene, Toluene, Xylene etc...), Oxygenate Production (Methanol, Ethanol, Propanol etc…), Paraffins and Waxes. -Petrochemical Refining Processes: Cracking (Steam Cracking, Hydrocracking, Fluid Catalytic Cracking), Reforming and Aromatisation, Isomerisation Processes, Dimerization and Polymerization, Aromatic Alkylation, Oxidation Processes, Hydrogenation and Dehydrogenation. -Products: Polymers and Plastics, Lubricants, Speciality and Fine Chemicals (Adhesives, Fragrances, Flavours etc...), Fibres, Pharmaceuticals.