Enhanced anhydrous proton conduction in binary mixtures of 1H-imidazole–1H-1,2,3-triazole based compounds
作者:Dipankar Basak、Craig Versek、Jacob A. Harvey、Scott Christensen、Jibben Hillen、Scott M. Auerbach、Mark T. Tuominen、D. Venkataraman
DOI:10.1039/c2jm32835f
日期:——
What is the impact of mixing two proton-conducting heterocycles on proton conductivity? Herein we answer this question through our investigations on two linear rod-like compounds 2-(4-(dodecyloxy)phenyl)-1H-imidazole (4) and 5-(4-(dodecyloxy)phenyl)-1H-1,2,3-triazole (10). We have found that mixtures of molecules 4 and 10 at certain compositions show enhanced proton conductivity compared to their pure components. We attribute the increased conductivity in these materials to the increased charge density due to facile co-ionization and increased mobility due to the incorporation of long alkyl chains, which prevent crystallization of protogenic groups while maintaining the required hydrogen bonded network. Our results suggest a new strategy for enhancing intrinsic proton conductivity in heterocyclic systems.
混合两种质子导电杂环对质子导电性的影响是什么?在这里,我们通过对两种线性棒状化合物2-(4-(十二烷氧)苯基)-1H-咪唑 (4) 和 5-(4-(十二烷氧)苯基)-1H-1,2,3-三唑 (10) 的研究来回答这个问题。我们发现,在某些成分比例下,混合物4和10的质子导电性相比于它们的纯组分有了增强。我们将这些材料中导电性增强归因于因容易共离子化而导致的电荷密度增加以及由于长烷基链的引入而导致的迁移性增强,这些长烷基链防止了质子化基团的晶化,同时维持了所需的氢键网络。我们的结果为增强杂环系统中固有的质子导电性提供了一种新策略。