Synthesis of rhodamine-helicin fluorescent probe for colorimetric detection of Cu2+ and fluorescent recognition of Fe3+

Fluorescent probes play a crucial role in analytical chemistry and biological imaging, offering selective detection of metal ions. Herein, we present the synthesis and characterization of a novel rhodamine-based fluorescent probe, RbHC (Rhodamine B Helicin), which was obtained through the condensati...

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Main Authors: Jingxuan Sun, Yuxin Shao, Peng Li, Yang Yang, Chao-Ying Gao, Jinglin Liu
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2024-01-01
Series:Sensors International
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Online Access:http://www.sciencedirect.com/science/article/pii/S2666351124000044
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author Jingxuan Sun
Yuxin Shao
Peng Li
Yang Yang
Chao-Ying Gao
Jinglin Liu
author_facet Jingxuan Sun
Yuxin Shao
Peng Li
Yang Yang
Chao-Ying Gao
Jinglin Liu
author_sort Jingxuan Sun
collection DOAJ
description Fluorescent probes play a crucial role in analytical chemistry and biological imaging, offering selective detection of metal ions. Herein, we present the synthesis and characterization of a novel rhodamine-based fluorescent probe, RbHC (Rhodamine B Helicin), which was obtained through the condensation of rhodamine B hydrazide and helicin in ethanol. The probe demonstrates remarkable selectivity and anti-interference capabilities towards Cu2+ and Fe3+ ions in 80% acetonitrile solution. Spectral titration analysis revealed a linear relationship between the intensity and the concentration of Cu2+/Fe3+. The formation of complex between Cu2+/Fe3+ and RbHC was confirmed to be 1:1, and it was further confirmed by ESI mass spectroscopy and DFT calculations. The coordination with Cu2+/Fe3+ caused the opening of RbHC's spirolactam ring, resulting in distinct color change and red fluorescence emissions. Moreover, RbHC exhibits high stability and water solubility under both acidic and neutral conditions, enabling its application in the imaging of plant tissues. Besides, the absorption intensity of RbHC–Cu2+ increased significantly when exposed to sunshine and 365 nm UV radiation, indicating that it might be used as a potential indicator for measuring outdoor UV intensity.
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institution Kabale University
issn 2666-3511
language English
publishDate 2024-01-01
publisher KeAi Communications Co., Ltd.
record_format Article
series Sensors International
spelling doaj-art-6cb3cee3e425412b9bd8da808dab601a2025-01-04T04:57:08ZengKeAi Communications Co., Ltd.Sensors International2666-35112024-01-015100282Synthesis of rhodamine-helicin fluorescent probe for colorimetric detection of Cu2+ and fluorescent recognition of Fe3+Jingxuan Sun0Yuxin Shao1Peng Li2Yang Yang3Chao-Ying Gao4Jinglin Liu5Inner Mongolia Key Laboratory for the Natural Products Chemistry and Functional Molecular Synthesis, College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028043, PR ChinaInner Mongolia Key Laboratory for the Natural Products Chemistry and Functional Molecular Synthesis, College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028043, PR ChinaDepartment of Chemistry, Faculty of Science, Beihua University, Jilin, 132013, PR ChinaInner Mongolia Key Laboratory for the Natural Products Chemistry and Functional Molecular Synthesis, College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028043, PR China; Corresponding author.Inner Mongolia Key Laboratory for the Natural Products Chemistry and Functional Molecular Synthesis, College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028043, PR ChinaInner Mongolia Key Laboratory for the Natural Products Chemistry and Functional Molecular Synthesis, College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028043, PR China; Corresponding author.Fluorescent probes play a crucial role in analytical chemistry and biological imaging, offering selective detection of metal ions. Herein, we present the synthesis and characterization of a novel rhodamine-based fluorescent probe, RbHC (Rhodamine B Helicin), which was obtained through the condensation of rhodamine B hydrazide and helicin in ethanol. The probe demonstrates remarkable selectivity and anti-interference capabilities towards Cu2+ and Fe3+ ions in 80% acetonitrile solution. Spectral titration analysis revealed a linear relationship between the intensity and the concentration of Cu2+/Fe3+. The formation of complex between Cu2+/Fe3+ and RbHC was confirmed to be 1:1, and it was further confirmed by ESI mass spectroscopy and DFT calculations. The coordination with Cu2+/Fe3+ caused the opening of RbHC's spirolactam ring, resulting in distinct color change and red fluorescence emissions. Moreover, RbHC exhibits high stability and water solubility under both acidic and neutral conditions, enabling its application in the imaging of plant tissues. Besides, the absorption intensity of RbHC–Cu2+ increased significantly when exposed to sunshine and 365 nm UV radiation, indicating that it might be used as a potential indicator for measuring outdoor UV intensity.http://www.sciencedirect.com/science/article/pii/S2666351124000044RhodamineHelicinIon recognitionFluorescence imaging
spellingShingle Jingxuan Sun
Yuxin Shao
Peng Li
Yang Yang
Chao-Ying Gao
Jinglin Liu
Synthesis of rhodamine-helicin fluorescent probe for colorimetric detection of Cu2+ and fluorescent recognition of Fe3+
Sensors International
Rhodamine
Helicin
Ion recognition
Fluorescence imaging
title Synthesis of rhodamine-helicin fluorescent probe for colorimetric detection of Cu2+ and fluorescent recognition of Fe3+
title_full Synthesis of rhodamine-helicin fluorescent probe for colorimetric detection of Cu2+ and fluorescent recognition of Fe3+
title_fullStr Synthesis of rhodamine-helicin fluorescent probe for colorimetric detection of Cu2+ and fluorescent recognition of Fe3+
title_full_unstemmed Synthesis of rhodamine-helicin fluorescent probe for colorimetric detection of Cu2+ and fluorescent recognition of Fe3+
title_short Synthesis of rhodamine-helicin fluorescent probe for colorimetric detection of Cu2+ and fluorescent recognition of Fe3+
title_sort synthesis of rhodamine helicin fluorescent probe for colorimetric detection of cu2 and fluorescent recognition of fe3
topic Rhodamine
Helicin
Ion recognition
Fluorescence imaging
url http://www.sciencedirect.com/science/article/pii/S2666351124000044
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