A terpyridine-based chemosensor for detection transition metal ions in aqueous solution: Synthesis and characterization

Liu, Pan; Cheng, Zheng; Shi, Ganhui; Ma, Chenchen; Chen, Xuegang

doi:10.1016/j.eurpolymj.2021.110716

Cited by 9 publications

(6 citation statements)

References 54 publications

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“…Therefore, the decrease in fluorescence intensity was likely attributed to the protonation of terpyridine, which reduced the intermolecular charge transfer effect [ 35 , 36 ]. The blue shift in the emission peak that appeared in an acidic environment might be attributed to two factors: (i) due to the coexistence of the unimer and dimer of TPY units in the copolymer, the decrease in the intermolecular charge transfer effect led to the disaggregation of the intermolecular CT complexes or (ii) the chromophore units preferred to exist in the form of the unimer [ 32 , 33 , 35 , 37 ]. With the increasing pH value, the emission peak of the hydrogel exhibited a small red shift with slightly increasing fluorescence intensity ( Figure 6 ).…”

Section: Resultsmentioning

confidence: 99%

“…This protonation not only enhanced the electron-withdrawing effect but also reduced the electron density around the pro- The fluorescence of the hydrogel was almost completely quenched (Figure 5) by the Fe 2+ , Fe 3+ , Cu 2+ , Hg 2+ , Ni 2+ , and Co 2+ ions, which was in accordance with the phenomenon observed in Figure 4b. This might be due to the fact that the coordination of the metal ions with TPY units in the copolymer changes the configuration of electron clouds, which were also involved in metal-ligand charge transfer (MLCT) bands [32,33]. In addition, the coordination between metal ions and amide groups, as well as the corresponding electron transfer, was also likely responsible for the decrease in the fluorescence intensity [30,34].…”

Section: Ph-responsive Propertiesmentioning

confidence: 99%

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Synthesis and Characterization of Multiple Stimuli-Responsive Fluorescent Polymer Hydrogels Based on Terpyridine and N-Isopropylacrylamide

Ma,

Zhao,

Xie

et al. 2024

Polymers

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A series of stimuli-responsive fluorescent hydrogels were successfully synthesized via micelle radical copolymerization of hydrophilic acrylamide (AM), hydrophobic chromophore terpyridine-based monomer (TPY), and N-isopropylacrylamide (NIPAM). These hydrogels presented blue emissions (423–440 nm) under room temperature, which is caused by the π-π* transition of the conjugated structures. Once the ambient temperature was increased to 55 °C, the fluorescence color changed from blue (430 nm) to pink (575 nm) within 10 min, subsequently to yellow (535 nm), and eventually back to pink. The thermal-responsive properties are attributed to the transition of the TPY units from unimer to dimer aggregation via the intermolecular charge transfer complex at high temperatures. The hydrogels showed pH-responsive properties. The emission peak of the hydrogel exhibited a blue shift of ~54 nm from neuter conditions to acidic conditions, while a 6 nm red shift to an alkaline environment was observed. The hydrogels demonstrated an obvious change in fluorescence intensity and wavelength upon adding different metal ions, which is caused by the coordination between the terpyridine units incorporated on the backbones and the metal ions. As a consequence, the hydrogels presented a sharp quenching fluorescence interaction with Fe2+, Fe3+, Cu2+, Hg2+, Ni2+, and Co2+, while it exhibited an enhanced fluorescence intensity interaction with Sn2+, Cd2+, and Zn2+. The microstructural, mechanical, and rheological properties of these luminescent hydrogels have been systematically investigated.

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Section: Resultsmentioning

confidence: 99%

Section: Ph-responsive Propertiesmentioning

confidence: 99%

Synthesis and Characterization of Multiple Stimuli-Responsive Fluorescent Polymer Hydrogels Based on Terpyridine and N-Isopropylacrylamide

Ma,

Zhao,

Xie

et al. 2024

Polymers

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“…[33] Moreover, comparing to the FT-IR spectrum of as-prepared P(NAGA-co-MAAc) (10) and P(NAGAco-MAAc)/Eu (10) hydrogels, the absorption at 2949 cm −1 of P(NAGA-co-MAAc)/Eu/TPy (10) that may be attributed to =C-H stretching vibrations of pyridine rings was observed. [9]…”

Section: Structure Characterizationmentioning

confidence: 99%

“…These concerns make it a top priority to develop selective and efficient chemosensors for determining direct and accurate spatiotemporal concentration of Zn 2+ ions via fluorescence signaling. [ 7–14 ] However, most of these reported Zn 2+ ‐chemosensors are in solution state. [ 8–11,15–18 ] For practical applications, solid‐state sensing materials are more attractive as they can provide operational simplicity and portability.…”

Section: Introductionmentioning

confidence: 99%

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Tough, Eu³⁺‐Induced Luminescent Hydrogel as Flexible Chemosensor for Real‐Time Quantitative Detection of Zn²⁺ Ion

Gong

Cui

Ruan

et al. 2023

Macromol. Rapid Commun.

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Here, a novel tough luminescent hydrogel with Europium is fabricated using a facile copolymerization process by introducing 2,2’:6’,2‐terpyridine (TPy) into a dual physical cross‐linked hydrogel. The obtained P(NAGA‐co‐MAAc)/Eu/TPy (x) (x refers to the feed ratio of NAGA to MAAc) hydrogels not only show outstanding mechanical performances (fracture strength, ≈2.5 MPa), but also give a special ability of rapid detection to low concentrations of zinc ions. Attractively, the theoretical limits of detection (LOD) of the hydrogel sensors are calculated as 1.6 µm, which is acceptable within the WHO limit. Furthermore, the continuous change in fluorescence of P(NAGA‐co‐MAAc)/Eu/TPy (10) strips upon contact with Zn2+ can be clearly observed by the naked eyes with the aid of a portable UV lamp, resulting in semi‐quantitative naked‐eyes detection through a standard colorimetric card. Moreover, by identifying the RGB value of the hydrogel sensor, it can also realize quantitative analysis. Therefore, excellence in sensing, simplicity in structure, and convenience in using make P(NAGA‐co‐MAAc)/Eu/TPy (10) hydrogel as a superior fluorescent chemosensor of Zn2+ ions.

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Heavy Metal Detection with Organic Moiety‐Based Sensors: Recent Advances and Future Directions

Ritu,

Narang,

Kumar

2024

ChemBioChem

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Heavy metal hazardous and enduring characteristics present a noteworthy risk to both human well‐being and the ecosystem. Heavy metal level monitoring requires accurate and dependable detection techniques. This review emphasizes the requirement for sophisticated detection methods that can address the issues like sensitivity, selectivity, accuracy cost, ease of use of heavy metal ion and allow for more accurate and trustworthy monitoring using organic moiety. It offers a thorough overview of cutting‐edge organic moiety‐based heavy metal detection technique. It primarily discusses four different types of substituted core structures, including coumarin, porphyrin, Schiff bases, and terpyridine, along with their mechanisms, methods, detection limits, and appropriate metal bindings. These moieties exhibit strong coordination with heavy metal ions because of their distinct structural characteristics. They produce stable complexes with complicated ligand‐metal interactions that are useful in a variety of applications, including sensing and catalysis. Each probe was chosen based on its propensity or capacity to identify important analytes in practical applications. To increase the effectiveness and productivity of fluorescence sensing, researchers have recently been working to create new fluorescence chemosensors that can identify many ions at once.

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A terpyridine-based chemosensor for detection transition metal ions in aqueous solution: Synthesis and characterization

Cited by 9 publications

References 54 publications

Synthesis and Characterization of Multiple Stimuli-Responsive Fluorescent Polymer Hydrogels Based on Terpyridine and N-Isopropylacrylamide

Synthesis and Characterization of Multiple Stimuli-Responsive Fluorescent Polymer Hydrogels Based on Terpyridine and N-Isopropylacrylamide

Tough, Eu³⁺‐Induced Luminescent Hydrogel as Flexible Chemosensor for Real‐Time Quantitative Detection of Zn²⁺ Ion

Heavy Metal Detection with Organic Moiety‐Based Sensors: Recent Advances and Future Directions

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A terpyridine-based chemosensor for detection transition metal ions in aqueous solution: Synthesis and characterization

Cited by 9 publications

References 54 publications

Synthesis and Characterization of Multiple Stimuli-Responsive Fluorescent Polymer Hydrogels Based on Terpyridine and N-Isopropylacrylamide

Synthesis and Characterization of Multiple Stimuli-Responsive Fluorescent Polymer Hydrogels Based on Terpyridine and N-Isopropylacrylamide

Tough, Eu3+‐Induced Luminescent Hydrogel as Flexible Chemosensor for Real‐Time Quantitative Detection of Zn2+ Ion

Heavy Metal Detection with Organic Moiety‐Based Sensors: Recent Advances and Future Directions

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Product

Resources

About

Tough, Eu³⁺‐Induced Luminescent Hydrogel as Flexible Chemosensor for Real‐Time Quantitative Detection of Zn²⁺ Ion