Detection of hazardous mercury ion using [5]helicene-based fluorescence probe with “Turn ON” sensing response for practical applications

Kaewnok, Nirawit; Sirirak, Jitnapa; Jungsuttiwong, Siriporn; Wongnongwa, Yutthana; Kamkaew, Anyanee; Petdum, Anuwut; Panchan, Waraporn; Sahasithiwat, Somboon; Sooksimuang, Thanasat; Charoenpanich, Adisri; Wanichacheva, Nantanit

doi:10.1016/j.jhazmat.2021.126242

Cited by 48 publications

(17 citation statements)

References 59 publications

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“…The Environmental Protection Agency (EPA) has set a strict limit of 10 nM for mercury levels in drinking water. 7,8 Therefore, a sensitive and rapid Hg 2+ detection method is critical for environmental monitoring and human health protection.…”

Section: Introductionmentioning

confidence: 99%

“…Mercury ion (Hg 2+ ), which is among the most poisonous heavy metal pollutants, constitutes severe hazards to the environment and living organisms. , Hg 2+ can accumulate in the human body through food, which may cause disorders and irreversible damage to the kidney, brain, liver, and other organs. − Given its bioaccumulation, nonbiodegradability, and high toxicity, many organizations have established permissible limits for Hg 2+ in water and food. The Environmental Protection Agency (EPA) has set a strict limit of 10 nM for mercury levels in drinking water. , Therefore, a sensitive and rapid Hg 2+ detection method is critical for environmental monitoring and human health protection.…”

Section: Introductionmentioning

confidence: 99%

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Dendritic Silica Nanospheres with Au–Pt Nanoparticles as Nanozymes for Label-Free Colorimetric Hg²⁺ Detection

Zhou

Zhu

et al. 2022

ACS Appl. Nano Mater.

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Mercury ion (Hg 2+ ) is toxic and can severely damage the environment and human health. Therefore, sensitive and selective Hg 2+ detection methods are needed. Here, we synthesized dendritic silica nanospheres (DSN) with central-radial porous structures and immobilized Au and Pt nanoparticles into their pores. The synthesized DSN with Au and Pt nanoparticles (AuPt@DSN) exhibited superior peroxidase-like activity, stability, and dispersibility. We found that AuPt@DSN can specifically reduce Hg 2+ , leading to the decreased catalytic activity of the nanozymes. Under optimal testing conditions, the AuPt@DSN material was efficiently used for the visual detection of Hg 2+ . The detection limit was 8.58 pM with a linear range from 0.1 nM to 10 μM. Selectivity toward Hg 2+ has also been demonstrated in aqueous solutions in the presence of other metal ions. This strategy is simple to utilize and has a low cost and rapid response. The practicability was further investigated by analyzing complex water samples, which suggests its potential for mercury evaluation in environmental samples.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dendritic Silica Nanospheres with Au–Pt Nanoparticles as Nanozymes for Label-Free Colorimetric Hg²⁺ Detection

Zhou

Zhu

et al. 2022

ACS Appl. Nano Mater.

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“…Herein, in order to explore the binding stoichiometry between the designed chemosensors and PDM, Job’s continuous variation method was used . The experiment was carried out by determining the fluorescence emission intensity of the various prepared solutions in which the concentrations of PDM and the chemosensor were varied individually, but the sum of their concentrations was set constant at 10 nM.…”

Section: Resultsmentioning

confidence: 99%

Dualistic Fluorescence as Well as Portable Smartphone-Assisted RGB-Relied Sensing Assay for the Ultra-Sensitive Determination of Pendimethalin in Food and Water Samples by AIEE Active Organic Probes

et al. 2022

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Herein, a peculiar fluorometric as well as smartphone-assisted RGB-relied sensing assay is introduced for determining pendimethalin (PDM) herbicide contents (in parts per trillion level) based on the anthracene-incorporated pyrimidinone/thione probes (S1 to S4). These compounds offered a unique and impressive aggregation-induced emission enhancement (AIEE) behavior by aggregation in H2O-dimethylformamide medium. Furthermore, these AIEE active compounds were found to display superior selectivity and extraordinary sensitivity for PDM detection via fluorescence quenching response. The extent of quenching degree was found to be linearly varied with the PDM concentration ranging from 0 to 20 nM, with a lower limit of detection of 367.8 pM (103.4 ppt) by S3 nanoaggregates. The detailed investigation revealed that such a high sensitivity of the designed sensor toward PDM is attributable to the existence of dual “photoinduced charge transfer and Förster resonance energy transfer process mechanisms”. The Stern–Volmer plots, Job’s plot, Benesi–Hildebrand plot, and 1H NMR titrations as well indicated the existence of substantial interactions between the sensor and PDM. The conducted selectivity tests provided distinguishable selectivity for PDM detection over various other insecticides/pesticides as well as other structural nitro analogues. Additionally, the presented sensing assay was also applied to quantify the PDM residues in spiked food (vegetables, fruits, and grains) and water samples. In addition, the sensor-coated fluorescent paper test strips were also fabricated for on-site detection of PDM. The applicability of smartphone-relied RGB analysis significantly streamlined the operation process, speeds up the detection procedure, and also offered a novel methodology for real-time analysis of PDM in real samples.

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“…Supplementary Materials: The following are available online at www.mdpi.com/xxx/s1, Figure S1. In addition, according to the method reported in the literature [47,79], the Whatman test paper is immersed in DMSO solution containing CPBI 2 , and then vacuum drying makes CPBI 2 test paper. The test paper shows green fluorescence under the 356 nm UV lamp, and the fluorescence is quickly quenched when Cu 2+ solution is added to the test paper (Figure 10b).…”

Section: Discussionmentioning

confidence: 99%

“…The fluorescence intensity of CPBI 2 is gradually decreased at λ em = 504 nm with the addition of Cu 2+ and Zn 2+ (0~100 µM), as shown in Figure 5a,c. According to the calculation method reported in the literature [47][48][49], the fluorescence detection limit of sensor CPBI 2 for Cu 2+ and Zn 2+ can be calculated as 5.98 × 10 −9 M and 6.02 × 10 −9 M, respectively (Figure 5b,d). Compared with the data reported before, the results indicate that sensor CPBI 2 is more sensitive than most known Cu 2+ and Zn 2+ sensors [50][51][52][53][54] (more comparisons can be seen in Tables S5 and S6).…”

Section: Sensing Performance Of Cpbi N Towards Metal Ionsmentioning

confidence: 99%

Preparation of Large Conjugated Polybenzimidazole Fluorescent Materials and Their Application in Metal Ion Detection

et al. 2021

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A new type of conjugated polybenzimidazole (CPBI) was synthesized through a simple polycondensation reaction without metal catalysis, and N-alkylation modification was carried out to solve the problems of solubility and fluorescence properties. A series of nano-microsphere polymers CPBIn with large conjugation, good solubility, and strong fluorescence has been successfully used as “turn-off” fluorescent probes for the first time. The results show that, under suitable N-alkylation conditions, the obtained CPBIn can be used as a highly sensitive and selective fluorescent probe for the detection of Cu2+ and Zn2+ at the same time, and their detection limits are both nM levels. In addition, CPBI2 can be designed as an ultra-sensitive IMPLICATION logic gate at the molecular level, cyclically detecting Cu2+. With the test paper containing CPBI2, easy and quick on-site detection can be achieved. This research provides a new idea for the brief synthesis of multifunctional materials.

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Detection of hazardous mercury ion using [5]helicene-based fluorescence probe with “Turn ON” sensing response for practical applications

Cited by 48 publications

References 59 publications

Dendritic Silica Nanospheres with Au–Pt Nanoparticles as Nanozymes for Label-Free Colorimetric Hg²⁺ Detection

Dendritic Silica Nanospheres with Au–Pt Nanoparticles as Nanozymes for Label-Free Colorimetric Hg²⁺ Detection

Dualistic Fluorescence as Well as Portable Smartphone-Assisted RGB-Relied Sensing Assay for the Ultra-Sensitive Determination of Pendimethalin in Food and Water Samples by AIEE Active Organic Probes

Preparation of Large Conjugated Polybenzimidazole Fluorescent Materials and Their Application in Metal Ion Detection

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Detection of hazardous mercury ion using [5]helicene-based fluorescence probe with “Turn ON” sensing response for practical applications

Cited by 48 publications

References 59 publications

Dendritic Silica Nanospheres with Au–Pt Nanoparticles as Nanozymes for Label-Free Colorimetric Hg2+ Detection

Dendritic Silica Nanospheres with Au–Pt Nanoparticles as Nanozymes for Label-Free Colorimetric Hg2+ Detection

Dualistic Fluorescence as Well as Portable Smartphone-Assisted RGB-Relied Sensing Assay for the Ultra-Sensitive Determination of Pendimethalin in Food and Water Samples by AIEE Active Organic Probes

Preparation of Large Conjugated Polybenzimidazole Fluorescent Materials and Their Application in Metal Ion Detection

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Dendritic Silica Nanospheres with Au–Pt Nanoparticles as Nanozymes for Label-Free Colorimetric Hg²⁺ Detection

Dendritic Silica Nanospheres with Au–Pt Nanoparticles as Nanozymes for Label-Free Colorimetric Hg²⁺ Detection