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Novel Olefin-Linked Covalent Organic Framework with Multifunctional Group Modification for the Fluorescence/Smartphone Detection of Uranyl Ion.
Zhen, Deshuai; Liu, Chunlin; Deng, Qiuhui; Li, Le; Grimes, Craig A; Yang, Shengyuan; Cai, Qingyun; Liu, Yu.
Affiliation
  • Zhen D; Hunan Key Laboratory of Typical Environment Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, PR China.
  • Liu C; State Key Laboratory of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China.
  • Deng Q; Hunan Key Laboratory of Typical Environment Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, PR China.
  • Li L; State Key Laboratory of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China.
  • Grimes CA; Hunan Key Laboratory of Typical Environment Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, PR China.
  • Yang S; State Key Laboratory of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China.
  • Cai Q; Hunan Key Laboratory of Typical Environment Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, PR China.
  • Liu Y; Flux Photon Corporation, 5950 Shiloh Road East, Alpharetta, Georgia 30005, United States.
ACS Appl Mater Interfaces ; 16(21): 27804-27812, 2024 May 29.
Article de En | MEDLINE | ID: mdl-38756089
ABSTRACT
Monitoring and purification of uranium contamination are of great importance for the rational utilization of uranium resources and maintaining the environment. In this work, an olefin-linked covalent organic framework (GC-TFPB) and its amidoxime-modified product (GC-TFPB-AO) are synthesized with 3-cyano-4,6-dimethyl-2-hydroxypyridine (GC) and 1,3,5-tris(4-formylphenyl) benzene (TFPB) by Knoevenagel condensation. GC-TFPB-AO results in specificity for rapid fluorescent/smartphone uranyl ion (UO22+) detection based on the synergistic effect of multifunctional groups (amidoxime, pyridine, and hydroxyl groups). GC-TFPB-AO features a rapid and highly sensitive detection and adsorption of UO22+ with a detection limit of 21.25 nM. In addition, it has a good recovery (100-111%) for fluorescence detection in real samples, demonstrating an excellent potential of predesigned olefin-linked fluorescent COFs in nuclear contaminated wastewater detection and removal.
Mots clés

Texte intégral: 1 Collection: 01-internacional Base de données: MEDLINE Langue: En Journal: ACS Appl Mater Interfaces Sujet du journal: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Année: 2024 Type de document: Article

Texte intégral: 1 Collection: 01-internacional Base de données: MEDLINE Langue: En Journal: ACS Appl Mater Interfaces Sujet du journal: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Année: 2024 Type de document: Article