4-Nitrobenzene thiourea self-assembly system and its transformation upon addition of Hg2+ ion: Applications as sensor to fluoride ion

Cao, Xinhua; Zhao, Na; Lv, Haiting; Gao, Aiping; Shi, Aiping; Wu, Yongquan

doi:10.1016/j.snb.2018.03.188

Cited by 26 publications

(6 citation statements)

References 42 publications

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“…Importantly, gelation was considered successful if no sample flow was observed upon inversion of the container at room temperature (the inverse flow method) . Additionally, xerogels were obtained by drying under reduced pressure …”

Section: Experimental Sectionmentioning

confidence: 99%

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Supramolecular Aggregation-Induced Emission Gels Based on Pillar[5]arene for Ultrasensitive Detection and Separation of Multianalytes

Zhang

Zhu

Huang

et al. 2018

ACS Sustainable Chem. Eng.

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A novel supramolecular AIE (aggregationinduced emission) gel (PMDP-G) based on pillar [5]arene which could ultrasensitively detect and separate multianalytes was efficiently constructed. First, a novel supramolecular gelator, PM (host), and a functionalized pillar[5]arene, DP (guest), were successfully designed and synthesized. Then, host PM and guest DP could construct a stable supramolecular AIE gel, PMDP-G, via "exo-wall" π−π interactions and host−guest interactions in cyclohexanol solution. Interestingly, PMDP-G shows bright blue-white AIE and the fluorescence quantum yield is about 60%. Moreover, PMDP-G could carry out ultrasensitive detection and separation of multianalytes such as Fe 3+ , Hg 2+ , Ag + , F − , and Br − by the competition between "exo-wall" π−π interactions and cation−π interactions. The LODs (limits of lowest detection) of these AIE gels for Fe 3+ , Hg 2+ , Ag + , F − , and Br − are in the range of 7.3 × 10 −10 −9.5 × 10 −9 M, indicating high sensitivity. More importantly, the xerogel of PMDP-G could adsorb and separate Fe 3+ , Hg 2+ , and Ag + from aqueous solution with nice adsorption property, and the adsorption rates are in the range of 90.12−99.95%. Meanwhile, supramolecular AIE gel PMDP-G could be used as a smart fluorescent display material.

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Section: Experimental Sectionmentioning

confidence: 99%

“…47 Additionally, xerogels were obtained by drying under reduced pressure. 48 Detection Method of Metal Ions. Supramolecular AIE gel PMDP-G was prepared by dissolving host PM (0.02 g) and guest DP (0.02 g) in cyclohexanol solution (0.2 mL), and the temperature is not lower than 58 °C followed by cooling to room temperature.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Supramolecular Aggregation-Induced Emission Gels Based on Pillar[5]arene for Ultrasensitive Detection and Separation of Multianalytes

Zhang

Zhu

Huang

et al. 2018

ACS Sustainable Chem. Eng.

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“…The spectra of modified TiO 2 NPs with methacryloxypropyltrimethoxysilane (MAPTMS) (Figure 2b) exhibited a band in the region of 1715 cm −1 which was assigned to the ester functional groups of MAPTMS. The successful synthesis of 1-(2hydroxyethyl)3-(4-nitro-phenyl)thioureido (Figure 1c) was confirmed with the appearance of bands at 1322 cm −1 (C S), 43 1496, 1582 cm −1 (NO 2 ), 1636 cm −1 (CC), 2947− 2998 cm −1 ([−(CH) n −]), and 3215 cm −1 (−OH groups). The spectra of NPhM (Figure 1d) exhibited a band in the region of 1700 cm −1 that was attributed to conjugated ester group.…”

Section: ■ Results and Discussionmentioning

confidence: 70%

Efficient Optical and UV–Vis Chemosensor Based on Chromo Probes–Polymeric Nanocomposite Hybrid for Selective Recognition of Fluoride Ions

et al. 2019

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A novel colorimetric sensor based on the TiO2/poly(acrylamide-co-methylene bis acrylamide-co-2-(3-(4-nitro-phenyl)thioureido)ethyl methacrylate) nanocomposite was synthesized via a surface modification strategy; methacryloxypropyltrimethoxysilane was used to provide reactive vinyl groups on the surface of TiO2 nanoparticles for the successful surface polymerization of Am (acrylamide), MBA (methylenbisacrylamide), and NPhM (2-(3-(4-nitrophenyl)thioureido)ethyl methacrylate) components. The successful preparation of nanocomposites was confirmed using Fourier transform infrared, 1H NMR, 13C NMR, scanning electron microscopy, transmission electron microscopy, thermogravimetry analysis, and X-ray diffraction methods, and the sensing ability of the probe toward fluoride ions was investigated using naked-eye detection and UV–vis measurement. The interaction of the prepared polymeric nanocomposite with fluoride ions elicited a significant visible change in color from pale yellow to orange and was further affirmed by a clean interconversion of the two absorption bands at 330 and 485 nm. The selective binding ability of the polymeric nanocomposite towards fluoride over other anions, such as I–, Cl–, Br–, AcO–, H2PO4–, and H2SO4– was further explored; the prepared chemosensor could detect fluoride ions in acetonitrile with a detection limit of 3 μM.

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“…In the past few decades, various kinds of low-molecular-weight gelators (LMWGs) have been designed and extensively studied. They are shown to be important applications in the field of sensors, optics, energy storage, crystal engineering, and drug-controlled release. − Gelators are often found serendipitously, and structural modification on the obtained gelator is an efficient and simple way to prepare novel gelators. − The molecular structural variation plays an important role for tuning functions of materials, especially gels. , It is found that subtle structural changes profoundly influence the organization and properties of gel systems. There have been tremendous efforts in gelator structure modifications at different positions of the molecular structure such as π, hydrogen bonding, hydrophobic/hydrophilic groups, and ions. − For example, Žinić et al have reported the structure-gelation relationship by preparing a set of isomers with variable lengths of the terminal and carboxylic acid methylene chains; Ajayaghosh et al have demonstrated the OPV-Ph to OPV-Py structural changes, which led to a new multi stimuli-responsive π-gelator; Cao and co-workers have shown the number of middle benzene units on the gelation and AIE properties .…”

Section: Introductionmentioning

confidence: 99%

Structural Tunability on Naphthalimide-Based Dendrimer Gelators via Glaser Coupling Interaction with Tailored Gelation Solvent Polarity and Stimuli-Responsive Properties

Guo

et al. 2021

Langmuir

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To date, most of the low-molecular-weight gels are found serendipitously, and modification on known gelator structures via organic synthesis is an efficient methodology to prepare gel series. However, a simple, direct, and rational modification method for a known gelator is still a challenge. Herein, we employ Glaser coupling reaction to synthesize a novel dendrimer gelator BisDEC with the (ALS2)2 structure, starting from terminal alkyne-based gelator DEC with the ALS2 structure. This structural change results in gels with distinct gelation solvents, mechanical properties, and stimuli-responsive abilities. The gelation abilities of DEC and BisDEC in nonpolar and polar solvents, respectively, have been examined and discussed by several experiments and Hansen constants. It is also shown that the BisDEC gel system shows intriguing self-healing, self-supporting, and grinding chromism properties.

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4-Nitrobenzene thiourea self-assembly system and its transformation upon addition of Hg2+ ion: Applications as sensor to fluoride ion

Cited by 26 publications

References 42 publications

Supramolecular Aggregation-Induced Emission Gels Based on Pillar[5]arene for Ultrasensitive Detection and Separation of Multianalytes

Supramolecular Aggregation-Induced Emission Gels Based on Pillar[5]arene for Ultrasensitive Detection and Separation of Multianalytes

Efficient Optical and UV–Vis Chemosensor Based on Chromo Probes–Polymeric Nanocomposite Hybrid for Selective Recognition of Fluoride Ions

Structural Tunability on Naphthalimide-Based Dendrimer Gelators via Glaser Coupling Interaction with Tailored Gelation Solvent Polarity and Stimuli-Responsive Properties

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