A simple turn-on fluorescent chemosensor based on Schiff base-terminated water-soluble polymer for selective detection of Al3+ in 100% aqueous solution

Bai, Liping; Tao, Farong; Li, Leixuan; Deng, Aixia; Yan, Chunna; Li, Guang; Wang, Liping

doi:10.1016/j.saa.2019.02.062

Cited by 23 publications

(12 citation statements)

References 60 publications

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“…The detection limit was much lower than the WHO’s recommended value of 7.41 μM in drinking water [57]. PEGBAB exhibited a lower detection limit for Al 3+ than our previously reported chemosensor PEGBHB [51], which has the opposite structure compared with PEGBAB. As shown in Table 1, the detection limit of PEGBAB for Al 3+ is comparable or better than other reported chemosensors.…”

Section: Resultsmentioning

confidence: 66%

“…Encouraged by these studies and in continuation to the relative work of water-soluble polymer chemosensors in our group [47,48,49,50,51], we have successfully designed and synthesized a salicylidene Schiff base-terminated water-soluble polymer PEGBAB (Scheme 1). PEGBAB exhibited excellent water solubility in 100% water, and could serve as an efficient turn-on fluorescent chemosensor for Al 3+ in pure aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

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A Highly Selective Turn-on and Reversible Fluorescent Chemosensor for Al3+ Detection Based on Novel Salicylidene Schiff Base-Terminated PEG in Pure Aqueous Solution

Bai

et al. 2019

Polymers

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The development of highly selective and sensitive chemosensors for Al3+ detection in pure aqueous solution is still a significant challenge. In this work, a novel water-soluble polymer PEGBAB based on salicylidene Schiff base has been designed and synthesized as a turn-on fluorescent chemosensor for the detection of Al3+ in 100% aqueous solution. PEGBAB exhibited high sensitivity and selectivity to Al3+ over other competitive metal ions with the detection limit as low as 4.05 × 10−9 M. PEGBAB displayed high selectivity to Al3+ in the pH range of 5–10. The fluorescence response of PEGBAB to Al3+ was reversible in the presence of ethylenediaminetetraacetic acid (EDTA). Based on the fluorescence response, an INHIBIT logic gate was constructed with Al3+ and EDTA as two inputs. Moreover, test strips based on PEGBAB were fabricated facilely for convenient on-site detection of Al3+.

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Section: Resultsmentioning

confidence: 66%

Section: Introductionmentioning

confidence: 99%

A Highly Selective Turn-on and Reversible Fluorescent Chemosensor for Al3+ Detection Based on Novel Salicylidene Schiff Base-Terminated PEG in Pure Aqueous Solution

Bai

et al. 2019

Polymers

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“…Upon excitation of an electron from the HOMO to the LUMO of the fluorophore, these lone pair electrons drop down to the partially empty HOMO of the fluorophore, which inhibits the excited electron from coming back to the HOMO of the fluorophore (fluorescence quenching). However, when the metal ion forms coordination, the lone pair electron energy relatively decreases than the fluorophore's HOMO which results in strong fluorescence emission [26]. Significantly, all the above discussed sensing mechanisms have been made in graphic format and shown in Fig.…”

Section: Chelation Enhanced Fluorescence (Chef)mentioning

confidence: 99%

“…Basically, organic substances are poorly soluble in water. To overcome this, Bai et al synthesized a PEGBHB functional polymer that is highly soluble in water and can efficiently detect Al 3+ ions in aqueous media [26]. The PEG-BHB polymer was more hydrophilic because of the presence of a polyethylene glycol (PEG) group, which enhanced the solubility of PEGBHB in water.…”

Section: Aluminum (Al 3+ ) Ion Detectionmentioning

confidence: 99%

“…Owing to their various advantages such as ease of device fabrication, low cost, high stability, and rapid disposability, fluorescence chemosensors have drawn great interest compared with other methods [17,18]. Several synthetically prepared substances, such as DNAzymes [19,20], fluorophores [21,22], metal-organic frameworks (MOFs) [23,24], copolymers [25], Schiff bases [26,27], and silica nanoparticles [28], have so far been used in developing fluorescence chemosensors to detect HMIs. Furthermore, there are several review articles on HMI detection methods achieved using fluorescence chemosensors involving different strategies such as DNA binding [29], host-guest interaction [30], photoinduced electron transfer (PET) [31], and fluorescence resonance energy transfer (FRET) [32].…”

Section: Introductionmentioning

confidence: 99%

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Paper-Based Fluorescence Chemosensors for Metal Ion Detection in Biological and Environmental Samples

Sivakumar

Lee

2021

BioChip J

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The recognition and detection of metal ions present in biological and environmental samples have attracted great attention in recent years. Various analytical techniques are used to detect metal ions. Among these, the fluorescence technique is among the emerging methods because of its simplicity, selectivity, and applicability to bioimaging. Thus, this review particularly explores paper-based fluorescence chemosensors involved in metal ion detection. Significantly, the first section addresses relevant research on metal ion detection involving various techniques. In the second section, several sensing strategies such as photoinduced electron transfer, fluorescence resonance energy transfer, intramolecular charge transfer, chelation enhanced fluorescence, excited-state intramolecular proton transfer, and aggregation-induced emission for the detection of target metal ions (aluminum, copper, iron, lead, mercury, and zinc) are investigated. The third section particularly discusses the role of fluorescence sensor materials (e.g., fluorescein, rhodamine, naphthalimide, BODIPY, carbon dots, quantum dots) involved in the detection processes and their advantages and limitations. Overall, this article reviews 90 research articles on paperbased fluorescence chemosensors for metal ion detection published until 2021.

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Visible light‐triggered pyrazole‐functionalized reversible ionophore for selective monitoring of aluminium (III) ion

Roy

Kundu

Saha

et al. 2022

Applied Organom Chemis

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A photo‐switchable ionophore, (E)‐4‐([2‐hydroxy‐3‐methoxybenzylidene]amino)‐1,5‐dimethyl‐2‐phenyl‐1,2‐dihydro‐3H‐pyrazol‐3‐one (S1), was rationally designed and developed for the visible light‐triggered selective and efficient transport of Al (III) ions. The non‐fluorescent probe distinctly manifests its green light at 518 nm in presence of Al (III) ion upon irradiation at 405 nm and showed a turned‐off emission with EDTA in ethanol. The binding mode and structural perspective of S1 were assessed through X‐ray crystallography, spectrophotometry, spectrofluorimetry, 1H nuclear magnetic resonance (NMR) titration, electrospray ionization mass spectrometry (ESI‐MS) analysis and computational calculations, suggesting a 1:1 binding stoichiometry and a distorted tetrahedral coordination geometry of S1‐Al complex. The testing strip was also developed with S1 coating for colourimetric and naked‐eye detection of Al (III) ion as evident from the green fluorescence upon irradiation at 365 nm. Further, a bioimaging study of S1 in human colon living cells (HP‐29) revealed the presence of Al (III) ion through a bright green fluorescence in HP‐29, indicating the potentiality of S1 to trace Al (III) in living cells. Additionally, cytotoxicity studies by MTT assay and staining analysis ensured that the probe might be an efficient and sensitive chemosensor for monitoring Al (III) ion in drug delivery and biological applications.

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A simple turn-on fluorescent chemosensor based on Schiff base-terminated water-soluble polymer for selective detection of Al3+ in 100% aqueous solution

Cited by 23 publications

References 60 publications

A Highly Selective Turn-on and Reversible Fluorescent Chemosensor for Al3+ Detection Based on Novel Salicylidene Schiff Base-Terminated PEG in Pure Aqueous Solution

A Highly Selective Turn-on and Reversible Fluorescent Chemosensor for Al3+ Detection Based on Novel Salicylidene Schiff Base-Terminated PEG in Pure Aqueous Solution

Paper-Based Fluorescence Chemosensors for Metal Ion Detection in Biological and Environmental Samples

Visible light‐triggered pyrazole‐functionalized reversible ionophore for selective monitoring of aluminium (III) ion

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