Journal
ACS OMEGA
Volume 6, Issue 12, Pages 8616-8624Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.1c00440
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Funding
- National Natural Science Foundation of China [21302019]
- Anhui Provincial Natural Science Foundation [1908085QB78]
- Key Projects of Natural Science Research of Anhui Province Colleges and Universities [KJ2019ZD38]
- Key Program for Young Talents of Fuyang Normal University [rcxm201902]
- Anhui Province Undergraduate Training Programs for Innovation and Entrepreneurship [S201910371042]
- Fuyang Municipal Government [XDHX201730, XDHX201731]
- Fuyang Normal University [XDHX201730, XDHX201731]
- Open Project Grant of Key Laboratory of Photochemical Conversion and Optoelectronic Materials, TIPC, Chinese Academy of Sciences [PCOM202002]
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The new fluorescent probe LXY, based on the rhodamine 6G platform, was designed to effectively recognize Fe3+ and has shown potential for bioimaging applications. Various experiments confirmed the interaction mode between LXY and Fe3+, and its ability to quantitatively and qualitatively distinguish Fe3+ on-site.
A new fluorescent probe LXY based on the rhodamine 6G platforms has been designed, synthesized, and characterized, which could recognize Fe3+ effectively in HEPES buffer (10 mM, pH = 7.4)/CH3CN (2:3, v/v). And the distinct color change and the rapid emergence of fluorescence emission at 550 nm achieved naked eye detection of Fe3+. The interaction mode between them was achieved by Job's plot, MS, SEM, and X-ray single-crystal diffraction. Importantly, the crystal structures proved that Fe3+ could induce the rhodamine moiety transform the closed-cycle form to the open-cycle form. But it is interesting that Fe3+ did not appear in the crystal structures. Meanwhile, the limit of detection (LOD) of LXY to Fe3+ was calculated to be 3.47 x 10(-9). In addition, the RGB experiment, test papers, and silica gel plates all indicated that the probe LXY could be used to distinguish Fe3+ quantitatively and qualitatively on-site. Moreover, the probe LXY has also been successfully applied to Fe3+ image in Caenorhabditis elegans, adult mice, and plant tissues. Thus, LXY was considered to have some potential for application in bioimaging.
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