化学
光漂白
光子上转换
荧光
检出限
近红外光谱
光学
离子
有机化学
色谱法
物理
作者
Caiping Ding,Yuting Gu,Weiwei Chen,Long Chen,Longhua Guo,Youju Huang
标识
DOI:10.1016/j.aca.2023.341297
摘要
Near-infrared (NIR) fluorescent probes provide extremely sensitive Al3+ detection for human health purposes. This research develops novel Al3+ response molecules (HCMPA) and NIR upconversion fluorescent nanocarriers (UCNPs), which respond to Al3+ through ratio NIR fluorescence. UCNPs improve photobleaching and visible light lack in specific HCMPA probes. Additionally, UCNPs are capable of ratio response, which will further enhance signal accuracy. The NIR ratiometric fluorescence sensing system has been successfully used to detect Al3+ within the range 0.1–1000 nM with an accuracy limit of 0.06 nM. Alternatively, a NIR ratiometric fluorescence sensing system integrated with a specific molecule can image Al3+ within cells. This study demonstrates that a NIR fluorescent probe is an effective and highly stable method of measuring Al3+ in cells.
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