Haque Syed A, Hossain Md Alamgir
Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217, USA.
Adv Sci Technol. 2014 Sep-Oct;8(2):73-76.
Perchlorate anion is a highly toxic environmental contaminant, which is implicated in various health related problems. This paper reports a cryptand-based synthetic molecule (L) prepared from the reaction of tris (2-aminoethyl) amine and 2,5-thiophenedicarboxaldehyde under a high dilution condition, providing a well-defined cavity for a guest species. The hexaprotonated receptor [HL] has been obtained from the addition of six equivalents of tosylic acid to L, which has been studied for perchlorate anion by proton NMR studies in water. The results demonstrate that the receptor strongly binds the negatively charged perchlorate hydrogen bonding and electrostatic interactions in solution forming a supramolecular anion complex. This molecule can be useful for the future application in the environmental remediation of toxic perchlorate anion.
高氯酸根阴离子是一种剧毒的环境污染物，与各种健康相关问题有关。本文报道了一种基于穴状配体的合成分子（L），它是由三（2-氨基乙基）胺与2,5-噻吩二甲醛在高稀释条件下反应制备的，为客体物种提供了一个明确的空腔。通过向L中加入六当量的对甲苯磺酸得到了六质子化受体[HL]，并在水中通过质子核磁共振研究对其与高氯酸根阴离子进行了研究。结果表明，该受体在溶液中通过氢键和静电相互作用与带负电荷的高氯酸根强烈结合，形成超分子阴离子复合物。该分子可用于未来对有毒高氯酸根阴离子进行环境修复的应用。
