化学
纳米探针
荧光
检出限
纳米纤维
纳米技术
自来水
色谱法
光学
材料科学
物理
工程类
环境工程
作者
Ning Ding,Ruoqing Liu,Bo Zhang,Ningru Yang,Mingwei Qin,Yin Zhang,Zhouping Wang
出处
期刊:Talanta
[Elsevier BV]
日期:2024-02-01
卷期号:271: 125713-125713
被引量:5
标识
DOI:10.1016/j.talanta.2024.125713
摘要
In this study, a novel fluorescent nanoprobe (ZIF-90@FSS) was constructed using a zeolite imidazolium ester skeleton (ZIF-90) incorporating sodium fluorescein within its porous structure. Notably, this nanoprobe exhibited regular fluorescence “off” detection performance of Fe3+ in actual samples and living cells. The concentration range of 0–150 ng/mL exhibited a lowest detection limit of 0.26 ng/mL. A nanofiber paper-based platform (VL78/ZIF-90@FSS) was further developed by coupling the prepared nanoprobe to a multi-dimensional fiber paper via CN bonding, enabling rapid visual white light colorimetric and fluorescence imaging of Fe3+ within 2 min. The constructed nanoprobe and its paper-based detection platforms demonstrated a stable recovery range in tap water, beer, and soy sauce samples during spiking-recovery assessments. The recovery rates ranged from 98.46 % to 108.24 % for the nanoprobe and from 91.75 % to 108.71 % for the nanofiber paper-based platform. Therefore, the developed nano-fluorescent sensor and paper-based nanofiber sensing platform offer a promising strategy for the visual detection of Fe3+, while also presenting novel and valuable methods to investigate the regulatory mechanisms of Fe3+ in living cells.
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