FRET‐based Fluorescent and Colorimetric Probe for Selective Detection of Hg(II) and Cu(II) with Dual‐mode

Li, Xue; He, Xudong; Zhao, Yuting; Chen, Chong; Chen, Biao; Wu, Zhibing; Wang, Peiyi

doi:10.1002/jhet.2863

Cited by 8 publications

(6 citation statements)

References 48 publications

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“…The acceptor needed to be water-soluble with good spectral overlap with Dye 1: as a model system, we selected Rhodamine B (Dye 2, fluorescence quantum yield (FQY) in water ∼20%) . Coumarin/Rhodamine dye pairs have been used previously in FRET pair studies . The absorption and emission of the two dyes are shown in Figure , from which it was calculated that Dye 2 can absorb ∼46% of the emission spectra of Dye 1.…”

Section: Resultsmentioning

confidence: 99%

“…38 Coumarin/Rhodamine dye pairs have been used previously in FRET pair studies. 39 The absorption and emission of the two dyes are shown in Figure 3, from which it was calculated that Dye 2 can absorb ∼46% of the emission spectra of Dye 1. The fabricated films were flexible and could easily be bent by hand without damaging the structures, as shown in Figure 4.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Flexible Nanoporous Liquid Crystal Networks as Matrixes for Förster Resonance Energy Transfer (FRET)

Timmermans

Heijden

Oosterlaken

et al. 2020

ACS Appl. Nano Mater.

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Forster resonance energy transfer (FRET) is important, not only in the fields of biology and biophysics but also in optoelectronics and light guiding systems. Different matrixes are being investigated that facilitate FRET, including zeolites and metal−organic frameworks. In this work, a matrix for FRET generation is proposed: nanoporous liquid crystal networks. These liquid crystal networks can be easily processed and can align dichroic fluorescent dyes. A base treatment can create nanopores in the network, which are then able to absorb a second fluorescent dye in an aqueous phase while still retaining good alignment. Using lifetime measurements, we provide proof that even in this nonoptimized system, around 70% of the energy was transferred via the FRET mechanism from one dye to the other. Liquid crystal networks have many advantages over current matrixes as they are easy to fabricate as well as flexible and could be modified to selectively and reversely absorb dyes, allowing many applications.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Flexible Nanoporous Liquid Crystal Networks as Matrixes for Förster Resonance Energy Transfer (FRET)

Timmermans

Heijden

Oosterlaken

et al. 2020

ACS Appl. Nano Mater.

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“…Whereas the sensors described above had a relatively high degree of specificity, some chemosensors have been reported to recognize several ions. − …”

Section: Fluorescent Chemosensors Based On Coumarin Platform For Meta...mentioning

confidence: 99%

Coumarin-Based Small-Molecule Fluorescent Chemosensors

et al. 2019

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Coumarins are a very large family of compounds containing the unique 2H-chromen-2-one motif, as it is known according to IUPAC nomenclature. Coumarin derivatives are widely found in nature, especially in plants and are constituents of several essential oils. Up to now, thousands of coumarin derivatives have been isolated from nature or produced by chemists. More recently, the coumarin platform has been widely adopted in the design of small-molecule fluorescent chemosensors because of its excellent biocompatibility, strong and stable fluorescence emission, and good structural flexibility. This scaffold has found wide applications in the development of fluorescent chemosensors in the fields of molecular recognition, molecular imaging, bioorganic chemistry, analytical chemistry, materials chemistry, as well as in the biology and medical science communities. This review focuses on the important progress of coumarin-based small-molecule fluorescent chemosensors during the period of 2012− 2018. This comprehensive and critical review may facilitate the development of more powerful fluorescent chemosensors for broad and exciting applications in the future.

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“…Whereas chemical sensors provide another approach, which is simple, inexpensive, and rapid in real‐time monitoring of cyanide anions . The sensing process is often accompanied by changes in absorption or fluorescence spectra that can be precisely monitored and sometimes detected by the naked eyes . Although various fluorescence probes have been reported for cyanide anions, the detection of endogenous biological cyanide in plant tissue remains to be explored because of the high background signal and large thickness of plant tissue that hamper the effective application of traditional one‐photo excitation.…”

Section: Introductionmentioning

confidence: 99%

Rapid and Selective Detection of Cyanide Anion by Enhanced Fluorescent Emission and Colorimetric Color Changes at Micromole Levels in Aqueous Medium

Zhang

et al. 2018

Journal of Heterocyclic Chem

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One main source of cyanide (CN−) exposure for mammals is through the plant consumption; thus, the sensitive and selective cyanide detection in plant tissue is a significant and urgent work. Here, a simple sensor N′‐(2,4‐dihydroxybenzylidene)naphtha[2,1‐b]furan‐2‐carbohydrazide (Q1‐3) was designed and synthesized for selective and sensitive dual‐channel detection of cyanide in aqueous medium (DMSO/H2O, 1:9, v/v). Acylhydrazone and phenolic hydroxyl groups on Q1‐3 are the recognition sites, and naphthofuran group is the signal report group. The intramolecular charge transfer between the benzene group and naphthofuran group was impeded because of the electron‐withdrawing groups (hydroxyl) on sensor Q1‐3. Interestingly, the sensor Q1‐3 exhibited an intramolecular charge transfer absorption band at 400 nm and emission band at 500 nm, respectively, directly realizing an “OFF–ON” response after the deprotonation process induced by cyanide anions in aqueous medium (DMSO/H2O, 1:9, v/v). Notably, this sensor was successfully applied to detect cyanide anions in food samples, which proves a very simple and selective platform for on‐site monitoring of cyanide in agriculture samples. In addition, the test strips and silica gel plates based on Q1‐3 were also fabricated, which could act as test kits and silica gel plates for convenient and efficient detection of cyanide anions.

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FRET‐based Fluorescent and Colorimetric Probe for Selective Detection of Hg(II) and Cu(II) with Dual‐mode

Cited by 8 publications

References 48 publications

Flexible Nanoporous Liquid Crystal Networks as Matrixes for Förster Resonance Energy Transfer (FRET)

Flexible Nanoporous Liquid Crystal Networks as Matrixes for Förster Resonance Energy Transfer (FRET)

Coumarin-Based Small-Molecule Fluorescent Chemosensors

Rapid and Selective Detection of Cyanide Anion by Enhanced Fluorescent Emission and Colorimetric Color Changes at Micromole Levels in Aqueous Medium

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