A simple indolo[2,3-a]carbazole based colorimetric chemosensor for simultaneous detection of Cu2+ and Fe3+ ions

Chen, Zhen-E; Zang, Xu-Feng; Yang, Mei; Hai, Zhang

doi:10.1016/j.saa.2020.118236

Cited by 20 publications

(7 citation statements)

References 32 publications

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“…Compared with other metals, the paramagnetism of Cu 2+ reduces the electron donor group. After coordination with Cu 2+ , it inhibits the internal charge transfer of PCZBTA-TBZ, thus inhibiting the occurrence of PET mechanism [34,35].…”

Section: Sensing Properties With Metal Ionsmentioning

confidence: 99%

A Poly(carbazole-alt-triazole) with Thiabendazole Side Groups as an “On-Off-On” Fluorescent Probe for Detection of Cu(II) Ion and Cysteine

Gao

Luo

et al. 2023

J Fluoresc

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A novel conjugated polymer PCZBTA-TBZ containing thiabendazole as recognition unit was synthesized via Suzuki coupling reaction, and its structural characterization, spectroscopic analysis and photophysical properties were investigated. In the metal ion response study, the addition of Cu 2+ led to the occurrence of the PET mechanism, which signi cantly quenched the uorescence of the polymer PCZBTA-TBZ with a quenching effect of 98%. According to the density functional theory calculation, compared with other polycarbazoles or other alternative copolymers containing carbazole, with alternating carbazole and triazole enhances the electron mobility and reduces the energy band gap of the polymer. Due to the strong coordination ability between Cu 2+ and Cys, the adding Cys competes the Cu 2+ in the [PCZBTA-TBZ-Cu 2+ ] complex, blocking the occurrence of PET, and the uorescence intensity of PCZBTA-TBZ is restored. The addition of other amino acids caused almost no change. The polymer is expected to be used for dual uorescence detection of speci c metal ions and Cys.

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Section: Sensing Properties With Metal Ionsmentioning

confidence: 99%

A Poly(carbazole-alt-triazole) with Thiabendazole Side Groups as an “On-Off-On” Fluorescent Probe for Detection of Cu(II) Ion and Cysteine

Gao

Luo

et al. 2023

J Fluoresc

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“…[4] Moreover, owing to the merits of excellent planarity, wide band gap and outstanding luminescent efficiency, indolocarbazole derivatives have been widely utilized as components of organic light-emitting diodes, organic field-effect transistors, and various types of sensors. [5] Given the significant importance of indolo [2,3a]carbazoles in various fields, it is not surprising that dozens of synthetic methods have been developed to access this valuable heterocyclic framework.…”

Section: Introductionmentioning

confidence: 99%

Brønsted‐Acid Mediated Synthesis of Symmetrical and Unsymmetrical Indolo[2,3‐a]carbazoles from Indoles and α‐Functionalized Ketones

Xu,

Huang,

Tan

et al. 2023

Adv Synth Catal

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Various symmetrical and unsymmetrical indolo[2,3‐a]carbazoles were synthesized in a one‐ or two‐step reaction using α‐haloketones and indoles. The developed methodology demonstrated controllable chemoselectivity and gram‐scale synthesis. Furthermore, this transformation was compatible with other α‐functionalized ketones, such as α‐hydroxy and α‐acetyloxy ketones, allowing for the formation of their corresponding indolocarbazoles. Additionally, our photochemical research has revealed that all the indolo[2,3‐a]carbazoles exhibited dual fluorescence, with the relative intensity varying depending on the solvent.

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“…An abnormal level of ferric ions in the body is usually associated with many severe diseases. [5][6][7][8] In addition, the content of Fe 3+ ions in environmental water is an important indicator for monitoring water pollution. [9][10][11][12] Therefore, it is very important to develop sensitive analytical methods for Fe 3+ in biological and environmental samples.…”

Section: Introductionmentioning

confidence: 99%

Highly sensitive and selective fluorescence sensing and imaging of Fe³⁺ based on a novel nitrogen‐doped graphene quantum dots

Wang

et al. 2021

Luminescence

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A novel nitrogen-doped graphene quantum dots (N-GQDs) with a green fluorescence emission was synthesized through microwave method using citric acid and semicarbazide hydrochloride as reactants. The as-synthesized N-GQDs exhibited good stability, excellent water solubility, and negligible cytotoxicity. Due to intermolecular charge transfer, ferric ion (Fe 3+ ) has a strong quenching effect on the N-GQDs. Fluorescence quenching has a linear relationship with the Fe 3+ concentration in the range 0.02-12 μM. The detection limit was 1.43 nM. What is more, it is worth mentioning that the obtained N-GQDs showed high selectivity and sensitivity towards Fe 3+ . Under the optimum conditions, the addition of 10-fold copper ions and 100-fold other metal ions had no influence on the detection of Fe 3+ (0.8 μM), which indicated a higher sensitivity compared with that of the reported methods. Due to their excellent properties, the obtained N-GQDs was successfully applied for sensing and imaging Fe 3+ in water samples and HeLa cells.

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A simple indolo[2,3-a]carbazole based colorimetric chemosensor for simultaneous detection of Cu2+ and Fe3+ ions

Cited by 20 publications

References 32 publications

A Poly(carbazole-alt-triazole) with Thiabendazole Side Groups as an “On-Off-On” Fluorescent Probe for Detection of Cu(II) Ion and Cysteine

A Poly(carbazole-alt-triazole) with Thiabendazole Side Groups as an “On-Off-On” Fluorescent Probe for Detection of Cu(II) Ion and Cysteine

Brønsted‐Acid Mediated Synthesis of Symmetrical and Unsymmetrical Indolo[2,3‐a]carbazoles from Indoles and α‐Functionalized Ketones

Highly sensitive and selective fluorescence sensing and imaging of Fe³⁺ based on a novel nitrogen‐doped graphene quantum dots

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A simple indolo[2,3-a]carbazole based colorimetric chemosensor for simultaneous detection of Cu2+ and Fe3+ ions

Cited by 20 publications

References 32 publications

A Poly(carbazole-alt-triazole) with Thiabendazole Side Groups as an “On-Off-On” Fluorescent Probe for Detection of Cu(II) Ion and Cysteine

A Poly(carbazole-alt-triazole) with Thiabendazole Side Groups as an “On-Off-On” Fluorescent Probe for Detection of Cu(II) Ion and Cysteine

Brønsted‐Acid Mediated Synthesis of Symmetrical and Unsymmetrical Indolo[2,3‐a]carbazoles from Indoles and α‐Functionalized Ketones

Highly sensitive and selective fluorescence sensing and imaging of Fe3+ based on a novel nitrogen‐doped graphene quantum dots

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Highly sensitive and selective fluorescence sensing and imaging of Fe³⁺ based on a novel nitrogen‐doped graphene quantum dots