Unprecedented ferrocene–quinoline conjugates: facile proton conduction via 1D helical water chains and a selective chemosensor for Zn(<scp>ii</scp>) ions in water

S, Joseph Ponniah; Barik, Subrat Kumar; Borthakur, Rosmita; Thakur, Arunabha; Garai, Bikash; Jana, Sourita; Ghosh, Sundargopal

doi:10.1039/c4ra13877e

Cited by 7 publications

(3 citation statements)

References 40 publications

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“…Further, to increase the complexation ability toward Hg 2+ , a triazole moiety was introduced into the receptors as a coordinating site . In continuation of our work to develop new and efficient redox-active chemosensors for toxic-metal ions, − a rhodamine–ferrocene conjugate with a triazole moiety has been designed as a new multichannel probe (Scheme ) for detection of Hg 2+ . As expected, on addition of Hg 2+ , the probes showed significant switching-on fluorescence behavior and changes in their electrochemical properties.…”

Section: Introductionmentioning

confidence: 99%

Ferrocene and Triazole-Appended Rhodamine Based Multisignaling Sensors for Hg²⁺and Their Application in Live Cell Imaging

2015

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Two triazole-appended ferrocene−rhodamine conjugates, C 47 H 45 N 7 O 3 Fe (2) and C 49 H 49 N 7 O 3 Fe (3), have been synthesized, and their electrochemical, optical, and metal cation sensing properties have been explored in aqueous medium. The newly synthesized receptors are simple, easily synthesizable, and display very high "turn on" fluorescence response for Hg 2+ as well as I − in an aqueous environment. Quantification of the absorption titration analysis shows that the receptors 2 and 3 can detect the presence of Hg 2+ even at very low concentrations (∼3 ppb). The mode of metal coordination has been studied by DFT calculations. Furthermore, the receptors 2 and 3 are less toxic toward MCF-7 cells and could detect intracellular Hg 2+ by fluorescent imaging studies.

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Section: Introductionmentioning

confidence: 99%

Ferrocene and Triazole-Appended Rhodamine Based Multisignaling Sensors for Hg²⁺and Their Application in Live Cell Imaging

2015

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“…Individual samples were pre-equilibrated at different RHs for 18 h before testing, allowing the samples to have a fixed water content and stable conductivity values. As denoted in Figures and S11–S13, the Nyquist plot shows a semicircle at high frequencies and a tail in the low-frequency region, indicating they appear to be normal behaviors for proton conductors. − …”

Section: Resultsmentioning

confidence: 91%

Tailored Porous Ferrocene-Based Metal–Organic Frameworks as High-Performance Proton Conductors

Song,

Ren,

Zuo

et al. 2024

Inorg. Chem.

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Although crystalline metal−organic frameworks (MOFs) have gained a great deal of interest in the field of proton conduction in recent years, the low stability and poor proton conductivity (σ) of some MOFs have hindered their future applications. As a result, resolving the issues listed above must be prioritized. Due to their exceptional structural stability, MOFs with ferrocene groups that exhibit particular physical and chemical properties have drawn a lot of attention. This study describes the effective preparation of a set of three-dimensional ferrocene-based MOFs, MIL-53-FcDC-Al/Ga and CAU-43, containing both main group metals and 1,1′-ferrocene dicarboxylic acid (H 2 FcDC). Multiple measurements, including powder X-ray diffraction (PXRD), infrared (IR), and scanning electron microscopy (SEM), confirmed that the addition of ferrocene groups enhanced the thermal, water, and acid− base stabilities of the three MOFs. Consequently, their proton-conductive behaviors were meticulously measured utilizing the AC impedance approach, and their best proton conductivities are 5.20 × 10 −3 , 2.31 × 10 −3 , and 1.72 × 10 −4 S/cm at 100 °C/98% relative humidity (RH), respectively. Excitingly, MIL-53-FcDC-Al/Ga demonstrated an extraordinarily ultrahigh σ of above 10 −4 S• cm −1 under 30 °C/98% RH. Using data from structural analysis, PXRD, SEM, thermogravimetry (TG), and activation energy, their proton transport mechanisms were thoroughly examined. The fact that these MOFs are notably easy to assemble, inexpensive, toxinfree, and stable will increase the range of practical uses for them.

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“…25 Therefore, there is still an urgent need to develop new sensors that are able to recognize different metal ions selectively independent of the solvent environment. Based on the above mentioned needs and the studies on quinoline-based ligands, [26][27][28][29][30][31][32][33] a new and simple sensor (L2) for Al 3+ and Zn 2+ that shows distinctly different optical properties in different solvent systems was designed and synthesized (Scheme 1). Sensor L2 exhibits enhanced uorescence with high selectivity upon binding to Al 3+ in DMSO/H 2 O HEPES buffer, but selectivity changes to Zn 2+ in EtOH/H 2 O HEPES buffer.…”

Section: Introductionmentioning

confidence: 99%

A fluorescence chemosensor based on imidazo[1,2-a]quinoline for Al³⁺ and Zn²⁺ in respective solutions

et al. 2015

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Unprecedented ferrocene–quinoline conjugates: facile proton conduction via 1D helical water chains and a selective chemosensor for Zn(ii) ions in water

Abstract: Absorption of water by a ferrocene–quinoline conjugate shows H-bonded 3D-networks of water in the molecular pockets and it acts as an efficient proton conductor.

Cited by 7 publications

References 40 publications

Ferrocene and Triazole-Appended Rhodamine Based Multisignaling Sensors for Hg²⁺and Their Application in Live Cell Imaging

Ferrocene and Triazole-Appended Rhodamine Based Multisignaling Sensors for Hg²⁺and Their Application in Live Cell Imaging

Tailored Porous Ferrocene-Based Metal–Organic Frameworks as High-Performance Proton Conductors

A fluorescence chemosensor based on imidazo[1,2-a]quinoline for Al³⁺ and Zn²⁺ in respective solutions

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Unprecedented ferrocene–quinoline conjugates: facile proton conduction via 1D helical water chains and a selective chemosensor for Zn(ii) ions in water

Abstract: Absorption of water by a ferrocene–quinoline conjugate shows H-bonded 3D-networks of water in the molecular pockets and it acts as an efficient proton conductor.

Cited by 7 publications

References 40 publications

Ferrocene and Triazole-Appended Rhodamine Based Multisignaling Sensors for Hg2+and Their Application in Live Cell Imaging

Ferrocene and Triazole-Appended Rhodamine Based Multisignaling Sensors for Hg2+and Their Application in Live Cell Imaging

Tailored Porous Ferrocene-Based Metal–Organic Frameworks as High-Performance Proton Conductors

A fluorescence chemosensor based on imidazo[1,2-a]quinoline for Al3+ and Zn2+ in respective solutions

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Product

Resources

About

Ferrocene and Triazole-Appended Rhodamine Based Multisignaling Sensors for Hg²⁺and Their Application in Live Cell Imaging

Ferrocene and Triazole-Appended Rhodamine Based Multisignaling Sensors for Hg²⁺and Their Application in Live Cell Imaging

A fluorescence chemosensor based on imidazo[1,2-a]quinoline for Al³⁺ and Zn²⁺ in respective solutions