Dual functional colorimetric and turn-off fluorescence probe based on pyrrolinone ester hydrazone dye derivative for Cu2+ monitoring and pH change

Aysha, Tarek; El‐Sedik, Mervat; Mohamed, Mahmoud Basseem I.; Gaballah, Samir T.; Kamel, M.

doi:10.1016/j.dyepig.2019.107549

Cited by 36 publications

(9 citation statements)

References 50 publications

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“…As shown in Figure S18 , with an increase in the Cu 2+ concentration, the absorbance of SPBI-a at 303 nm decreased accompanied by a slight of redshift, and the absorbance at 250–280 and 350–800 nm increased gradually, resulting in a change in the solution color from colorless to blue. These observations indicate that there is a strong interaction between SPBI-a and Cu 2+ ( Aysha et al., 2019 ). Importantly, the system gradually reached a saturated state when the concentration of Cu 2+ is approximately 80 μ M. Using a reported method ( Kumar and Chae, 2019 ; Chen et al., 2019a , 2019b ; Zhao et al., 2019 ), the LOD was calculated as 8.76 × 10 −7 M ( Figure S19 ), which is equivalent to the sensitivity of some Cu 2+ sensors reported recently ( Table S6 ) ( Han et al., 2019 ; Wu et al., 2020b ; Wei et al., 2020 ).…”

Section: Resultsmentioning

confidence: 79%

N-alkylation briefly constructs tunable multifunctional sensor materials: Multianalyte detection and reversible adsorption

et al. 2021

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Summary A series of N -alkyl-substituted polybenzimidazoles ( SPBIs ), synthesized by simple condensation and N -alkylation, act as functional materials with tunable microstructures and sensing performance. For their controllable morphologies, the formation of nano-/microspheres is observed at the n (RBr)/ n (PBI) feed ratio of 5:1. Products with different degrees of alkylation can recognize metal ions and nitroaromatic compounds (NACs). For example, SPBI-c , obtained at the feed ratio of 1:1, can selectively detect Cu 2+ , Fe 3+ , and NACs. By contrast, SPBI-a , obtained at the feed ratio of 0.1:1, can exclusively detect Cu 2+ with high sensitivity. Their sensing mechanisms have been studied by FT-IR spectroscopy, SEM, XPS, and DFT calculations. Interestingly, the SPBIs can adsorb Cu 2+ in solution and show good recyclability. These results demonstrate that polymeric materials with both sensing and adsorption applications can be realized by regulating the alkylation extent of the main chain, thus providing a new approach for the facile synthesis of multifunctional materials.

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Section: Resultsmentioning

confidence: 79%

N-alkylation briefly constructs tunable multifunctional sensor materials: Multianalyte detection and reversible adsorption

et al. 2021

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“…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 5 b,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: Resultsmentioning

confidence: 56%

“…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). In addition, as a "turn-off" fluorescence sensor, the fluorescence-quenching proces of CPBI2 can be determined by Stern-Volmer (S-V) constant (Ksv), whose calculation formula is: I0/I = 1+Ksv[Q] (Figure 6).…”

Section: Sensing Performance Of Cpbi N Towards Metal Ionsmentioning

confidence: 58%

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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“…Fluorescent film sensors are widely considered, due to their advantages, such as convenient portability, real-time detection, and no pollution to the system, for testing [ 32 , 33 , 34 , 35 , 36 , 37 ]. Compared with the solution and powder detection forms, the adjustable shape, size, and flexibility of the fluorescent film makes it have wider application prospects.…”

Section: Introductionmentioning

confidence: 99%

Luminescent Hydrogel Based on Silver Nanocluster/Malic Acid and Its Composite Film for Highly Sensitive Detection of Fe3+

Liu

Wang

et al. 2021

Gels

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Metal nanoclusters (NCs) with excellent photoluminescence properties are an emerging functional material that have rich physical and chemical properties and broad application prospects. However, it is a challenging problem to construct such materials into complex ordered aggregates and cause aggregation-induced emission (AIE). In this article, we use the supramolecular self-assembly strategy to regulate a water-soluble, atomically precise Ag NCs (NH4)9[Ag9(C7H4SO2)9] (Ag9-NCs, [Ag9(mba)9], H2mba = 2-mercaptobenzoic acid) and L-malic acid (L–MA) to form a phosphorescent hydrogel with stable and bright luminescence, which is ascribed to AIE phenomenon. In this process, the AIE of Ag9-NCs could be attributed to the non-covalent interactions between L–MA and Ag9-NCs, which restrict the intramolecular vibration and rotation of ligands on the periphery of Ag9-NCs, thus inhibiting the ligand-related, non-radiative excited state relaxation and promoting radiation energy transfer. In addition, the fluorescent Ag9-NCs/L–MA xerogel was introduced into polymethylmethacrylate (PMMA) to form an excellently fluorescent film for sensing of Fe3+. Ag9-NCs/L–MA/PMMA film exhibits an excellent ability to recognize Fe3+ ion with high selectivity and a low detection limit of 0.3 μM. This research enriches self-assembly system for enhancing the AIE of metal NCs, and the prepared hybrid films will become good candidates for optical materials.

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Dual functional colorimetric and turn-off fluorescence probe based on pyrrolinone ester hydrazone dye derivative for Cu2+ monitoring and pH change

Cited by 36 publications

References 50 publications

N-alkylation briefly constructs tunable multifunctional sensor materials: Multianalyte detection and reversible adsorption

N-alkylation briefly constructs tunable multifunctional sensor materials: Multianalyte detection and reversible adsorption

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

Luminescent Hydrogel Based on Silver Nanocluster/Malic Acid and Its Composite Film for Highly Sensitive Detection of Fe3+

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