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Pillar[5]arene‐based “Three‐components” Supramolecular Assembly and the Performance of Nitrobenzene‐based Explosive Fluorescence Sensing
Author(s) -
Chong Hui,
Xu Yinghui,
Han Ying,
Yan Chaoguo,
Su Dawei,
Wang Chengyin
Publication year - 2021
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202102725
Subject(s) - picric acid , supramolecular chemistry , nitrobenzene , chemistry , fluorescence , supramolecular assembly , terpyridine , proton nmr , photochemistry , combinatorial chemistry , metal , organic chemistry , molecule , physics , catalysis , quantum mechanics
A “three‐components” supramolecular assembly has been fabricated by mixing 2, 2’: 6’, 2”‐terpyridine attached pillar[5]arene, cyano and triazole bearing alkyl chain and Zn 2+ in solvent of CHCl 3 and CH 3 CN. The driving forces for the assembly were believed to be host‐guest and metal chelating interactions as characterized by 1 H NMR, UV‐vis and fluorescence spectra. The supramolecular organo‐gel formed upon the concentration of components amount to 1 M. The supramolecular displayed nitrobenzene based explosive sensing capability using picric acid, ortho ‐nitrobenzene and phenol as samples. The assembly was most sensitive towards picric acid among the three analytes. The limit of detection for picric acid was determined to be 1.66 × 10 −4 M.