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An investigation into the preparation of poly(1‐methylpyrol‐2‐ylsquaraine) particles
Journal of Heterocyclic Chemistry ( IF 2.0 ) Pub Date : 2020-01-24 , DOI: 10.1002/jhet.3887
Daniel E. Lynch 1
Affiliation  

Poly(1‐methylpyrol‐2‐ylsquaraine) particles can be prepared in a one‐pot reaction by refluxing equimolar amounts of squaric acid (3,4‐dihydroxycyclobut‐3‐ene‐1,2‐dione) and 1‐methylpyrrole in butan‐1‐ol and precipitate from the reaction as porous micrometer‐sized spheres that have potential use as molecular adsorbents in chromatography and sensors, as well as ion batteries. Previous papers that have examined the electrical, photophysical, and adsorption properties of these particles have reported their size and shape, with appropriate proof in the form of electron microscope images but have paid little attention as to the actual limits of the particle size and spherical formation. Thus, a range of experiments have been undertaken to examine the robustness, in terms of reaction variation, of the construction of these spheres. Reaction characteristics such as solvent, sequence in which reactants are added, reaction time, reactant concentration, and mode of reaction agitation have all been examined to determine the optimal conditions for the production of these spheres. Fortuitously, butan‐1‐ol remains the most suitable solvent, but reactant concentration is important to produce uniformly sized spherical particles with minimal interparticle growth.

中文翻译:

聚(1-甲基吡咯-2-基方酸)颗粒的制备研究

可以通过回流等摩尔量的方酸(3,4-二羟基环丁-3-烯-1,2-二酮)和1-甲基吡咯在丁烷中一步反应制备聚(1-甲基吡咯-2-基quarquarine)颗粒-1-醇从反应中沉淀出来,成为微米级的多孔球体,有可能用作色谱和传感器以及离子电池中的分子吸附剂。以前检查过这些颗粒的电,光物理和吸附特性的论文均已报告了它们的大小和形状,并以电子显微镜图像的形式提供了适当的证明,但对颗粒大小和球形形成的实际限制却很少关注。因此,已经进行了一系列实验以检查这些球的构造在反应变化方面的鲁棒性。已经检查了反应特性,例如溶剂,添加反应物的顺序,反应时间,反应物浓度和反应搅拌方式,以确定生产这些球的最佳条件。幸运的是,丁-1-醇仍然是最合适的溶剂,但是反应物的浓度对于生产尺寸均匀的球形颗粒且使颗粒间的生长最小化非常重要。
更新日期:2020-01-24
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