A metal–organic gel‐based fluorescent chemosensor for selective Al3+ detection

• Published in: Applied organometallic chemistry Vol. 33; no. 11
• Main Authors: Gu, Dongxu, Yang, Weiting, Wang, Fuxiang, Li, Meiling, Liu, Lijuan, Li, Huihui, Pan, Qinhe
• Format: Journal Article
• Language: English
• Published: Chichester Wiley Subscription Services, Inc 01.11.2019
• Subjects: Al3+ chemosensor; Aluminum; Chemical sensors; Chemistry; Chemoreceptors; composite film; Drinking water; Environmental impact; Environmental monitoring; Fluorescence; Metals; Nickel; Ni‐MOG; Polyvinyl alcohol; Seawater; Selectivity; Water quality
• ISSN: 0268-2605; 1099-0739
• DOI: 10.1002/aoc.5179

As an important metal element, aluminium has a significant impact on the environment and human health, and thus the detection of Al3+ has become the subject of much research. We synthesized a Ni(II)‐based metal–organic gel (Ni‐MOG), which can serve as an Al3+ fluorescence sensor with high selectivity and sensitivity, the limit of detection being calculated to be 0.5 μM. In addition, a composite film was further fabricated by hybridization of this Ni‐MOG with poly(vinyl alcohol). The composite film produced a rapid fluorescence response to Al3+ solutions at concentrations above 5 × 10−5 M in 5 min. The Ni‐MOG composite film can also be successfully applied for the sensitive detection of Al3+ in real samples of tap water and seawater. The effective detection of Al3+ described in this contribution provides a new insight into water quality monitoring and has promising application value. A Ni(II)‐based metal–organic gel (Ni‐MOG) was synthesized together with a composite film of the gel by combination with poly(vinyl alcohol), both of which can serve as Al3+ fluorescence sensors with high selectivity and sensitivity.