Remarkably selective NH4+ binding and fluorescence sensing by tripodal tris(pyrazolyl) receptors derived from 1,3,5-triethylbenzene: structural and theoretical insights on the role of ion pairing†,10.1039/C7NJ03213G

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Lactoyl-CoA 全氟丁基戊烷白叶藤碱全氟己基辛烷新白叶藤碱壳寡糖特色专题-生物多肽

Remarkably selective NH4+ binding and fluorescence sensing by tripodal tris(pyrazolyl) receptors derived from 1,3,5-triethylbenzene: structural and theoretical insights on the role of ion pairing†

Tosin M. Jonah,Logesh Mathivathanan,Alexander N. Morozov,Alexander M. Mebel,Raphael G. Raptis,Konstantinos Kavallieratos

New Journal of Chemistry Pub Date : 11/15/2017 00:00:00 , DOI:10.1039/C7NJ03213G

Abstract

A fluorescent sensor for NH₄⁺ based on 1,3,5-triethylbenzene shows remarkable binding and sensing selectivity for NH₄⁺vs. K⁺. Fluorescence and NMR titrations reveal surprising differences in the sensing properties and binding constants of tris-(3,5-dimethyl)pyrazole 1vs. tris(3,5-diphenyl)pyrazole 2. The roles of ion pairing and solvation are revealed by X-ray and DFT studies.