Naphthalene-based turn-on fluorescent probe for sensitively recognizing Zn2+

被引：4

作者：

Tong, Junfeng ^{[1
]}

Liu, Wuyan ^{[1
]}

Huang, Yubo ^{[1
]}

Liu, Bo ^{[1
]}

Zhang, Wenxiang ^{[2
]}

Li, Jianfeng ^{[1
]}

Xia, Yangjun ^{[1
]}

机构：

[1] Lanzhou Jiaotong Univ, Sch Mat Sci & Engn, Lanzhou 730070, Peoples R China

[2] Petrochina Lanzhou Petrochem Co, Lanzhou, Peoples R China

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2023年 / 755卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Chelation enhanced fluoresce; keto-amine isomer; naphthalene; pyridine; zinc ion; SCHIFF-BASE; SELECTIVE DETECTION; AQUEOUS-SOLUTION; SENSOR; ZINC; CHEMOSENSOR; IONS; DESIGN; HG2+; AL3+;

D O I：

10.1080/15421406.2022.2105595

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A Schiff-base type fluorescent sensor (PLB3) was synthesized by nucleophilic addition-elimination between 2-hydroxy-1-naphthaldehyde and 5-chloro-2-aminopyridine. Single crystal X-ray diffraction analysis demonstrated keto-amine isomer was predominantly adopted. 8-Fold fluorescence-enhanced recognition for detecting Zn2+ was chelation enhanced fluoresce (CHEF) mechanism. Also, PLB3 could distinguish well Zn2+ from analogue Cd2+. Job's plot fluorescence titration and UV-Vis titration revealed the 1:1 stoichiometry between Zn2+ and PLB3. The association constant (K-a) and limit of detection (LOD) were 5.14 x 10(7) M-1 and 0.33 mu M, respectively. The excellent selective and sensitive properties urge PLB3 to detect the trace amounts of Zn2+ in the environmental systems.

引用

页码：49 / 61

页数：13

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