Green, Efficient Detection and Removal of Hg2+ by Water-Soluble Fluorescent Pillar[5]arene Supramolecular Self-Assembly

被引：5

作者：

Jiang, Xiaomei ^{[1
]}

Wang, Lingyun ^{[1
]}

Ran, Xueguang ^{[2
]}

Tang, Hao ^{[1
]}

Cao, Derong ^{[1
]}

机构：

[1] South China Univ Technol, Sch Chem & Chem Engn, Key Lab Funct Mol Engn Guangdong Prov, 381 Wushan Rd, Guangzhou 510641, Peoples R China

[2] Guangdong Acad Agr Sci, Inst Anim Sci, State Key Lab Livestock & Poultry Breeding, Minist Agr,Key Lab Anim Nutr & Feed Sci South Chi, Guangzhou 510641, Peoples R China

来源：

BIOSENSORS-BASEL | 2022年 / 12卷 / 08期

基金：

中国国家自然科学基金;

关键词：

supramolecular self-assembly; fluorescence sensing; water-soluble pillar[5]arene; mercury(II) detection; diketopyrrolopyrrole; HOST-GUEST COMPLEXATION; CONJUGATED POLYMER; PILLARARENE; MERCURY; NANOPARTICLES; SYSTEM; SENSOR; RECOGNITION; BIOACTIVITY; SOLUBILITY;

D O I：

10.3390/bios12080571

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Developing a water-soluble supramolecular system for the detection and removal of Hg2+ is extremely needed but remains challenging. Herein, we reported the facile construction of a fluorescent supramolecular system (H superset of G) in 100% water through the self-assembly of carboxylatopillar[5]arene sodium salts (H) and diketopyrrolopyrrole-bridged bis(quaternary ammonium) guest (G) by host-guest interaction. With the addition of Hg2+, the fluorescence of H superset of G could be efficiently quenched. Since Hg2+ showed synergistic interactions (coordination and Hg2+- cavity interactions with G and H, respectively), crosslinked networks of H superset of G@Hg2+ were formed. A sensitive response to Hg2+ with excellent selectivity and a low limit of detection (LOD) of 7.17 x 10(-7) M was obtained. Significantly, the quenching fluorescence of H superset of G@Hg2+ can be recovered after a simple treatment with Na2S. The reusability of H superset of G for the detection of Hg2+ ions was retained for four cycles, indicating the H superset of G could be efficiently used in a reversible manner. In addition, the H superset of G could efficiently detect Hg2+ concentration in real samples (tap water and lake water). The developed supramolecular system in 100% water provides great potential in the treatment of Hg2+ detection and removal for environmental sustainability.

引用

页数：15