New Functionalized Ionic Liquids Based on POSS for the Detection of Fe3+ Ion

This study reports a novel series of imidazolium ionic liquids (ILs) based on polyhedral oligomeric silsesquioxanes (POSS) towards effective detection of metal ions, especially Fe3+ ion. 1H, 13C, 29Si NMR, high resolution mass spectra (HRMS) and Fourier transform infrared spectra (FTIR) were applied to confirm the structures of the ILs based on POSS (ILs-POSS). The three ILs-POSS were synthesized via a green chemistry approach—a thiol-ene “click” reaction without metal ions as catalysts. Furthermore, the spherical vesicle structures of the ILs-POSS were observed and caused by self-assembly behaviors. Through comprehensive characterizations, these ILs-POSS have performed excellent thermal stabilities and low glass transition temperatures. In addition, we found it very meaningful that the limits of detection (LODs) of the three ILs-POSS for the detection of the Fe3+ ion were 7.91 × 10−8 M, 1.2 × 10−7 M, and 1.2 × 10−7 M, respectively. These data illustrate that these ILs-POSS have great potential for the detection of the Fe3+ ion. In conclusion, this study not only prepared novel ILs-POSS, but also provided new materials as fluorescent sensors in the detection of Fe3+.

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New Polyhedral Oligomeric Silsesquioxanes-Based Fluorescent Ionic Liquids: Synthesis, Self-Assembly and Application in Sensors for Detecting Nitroaromatic Explosives

Polymers ◽

10.3390/polym10080917 ◽

2018 ◽

Vol 10 (8) ◽

pp. 917 ◽

Cited By ~ 6

Author(s):

Wensi Li ◽

Dengxu Wang ◽

Dongdong Han ◽

Ruixue Sun ◽

Jie Zhang ◽

...

Keyword(s):

Ionic Liquids ◽

Self Assembly ◽

Picric Acid ◽

High Sensitivity ◽

Nitroaromatic Compounds ◽

Polyhedral Oligomeric Silsesquioxanes ◽

X Ray Diffraction ◽

Thermal Stabilities ◽

Nitroaromatic Explosives ◽

Detection Of Explosives

In this paper, two different models of hybrid ionic liquids (ILs) based on polyhedral oligomeric silsesquioxanes (POSSs) have been prepared. Additionally, these ILs based on POSSs (ILs-POSSs) exhibited excellent thermal stabilities and low glass transition temperatures. 1H, 13C, and 29Si nuclear magnetic resonance (NMR) spectroscopy, Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD) were used to confirm the structures of the IL-POSSs. Furthermore, the spherical vesicle structures of two IL-POSSs were observed and were caused by self-assembly behaviors. In addition, we found it very meaningful that these two ILs showed lower detection limits of 2.57 × 10−6 and 3.98 × 10−6 mol/L for detecting picric acid (PA). Moreover, the experimental data revealed that the products have high sensitivity for detecting a series of nitroaromatic compounds—including 4-nitrophenol, 2,4-dinitrophenol, and PA—and relatively comprehensive explosive detection in all of the tests of IL-POSSs with nitroaromatic compounds thus far. Additionally, the data indicate that these two new ILs have great potential for the detection of explosives. Therefore, our work may provide new materials including ILs as fluorescent sensors in detecting nitroaromatic explosives.

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Control of Crystalline-Amorphous Structures of Polyhedral Oligomeric Silsesquioxanes Containing Two Types of Ammonium Side-Chain Groups and Their Properties as Protic Ionic Liquids

Molecules ◽

10.3390/molecules24244553 ◽

2019 ◽

Vol 24 (24) ◽

pp. 4553 ◽

Cited By ~ 2

Author(s):

Ryoya Hasebe ◽

Yoshiro Kaneko

Keyword(s):

Ionic Liquids ◽

Side Chain ◽

Methyl Groups ◽

29Si Nmr ◽

Side Chains ◽

Polyhedral Oligomeric Silsesquioxanes ◽

Ammonium Ions ◽

Protic Ionic Liquids ◽

Hydrolytic Condensation ◽

Amorphous Structures

Polyhedral oligomeric silsesquioxanes (POSSs), Am-POSS(x,y), prepared by hydrolytic condensation, contains two types of ammonium side-chain groups, where the numbering of x and y represents the type of ammonium ions in the POSS structure, corresponding to primary (1), secondary (2), tertiary (3), and quaternary (4) ammonium ions. Mixtures of the two starting materials selected from organotrialkoxysilanes containing primary, secondary, and tertiary amines and a quaternary ammonium salt [(RO)3Si(CH2)3R′, R = CH3 or CH2CH3, R′ = NH2, NHCH3, N(CH3)2, and N(CH3)3Cl] were dissolved in dimethyl sulfoxide (DMSO). The hydrolytic condensation was performed in the presence of bis(trifluoromethansulfonyl)imide (HNTf2) and water. All Am-POSS(x,y) structures consisted of a cage-type octamer (T8-POSS), as confirmed by 29Si NMR spectrometry and matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS). Differential scanning calorimetry (DSC) and X-ray diffraction (XRD) analyses indicated that Am-POSS(1,3), Am-POSS(1,4), and Am-POSS(2,4) had amorphous structures. These POSSs have two or three differences in the number of methyl groups between the two types of ammonium side-chains. Conversely, Am-POSS(1,2), Am-POSS(2,3), and Am-POSS(3,4) had crystalline structures. The difference in the number of methyl groups between the two types of ammonium side-chains in these POSSs is only one. Therefore, the crystalline-amorphous structure of Am-POSS(x,y) is controlled by the side-chain group combinations. Furthermore, Am-POSS(1,3), Am-POSS(1,4), and Am-POSS(2,4) are protic ionic liquids with relatively low flow temperatures.

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New sensors for the detection of picric acid: Ionic liquids based on polyhedral oligomeric silsesquioxanes prepared via a thiol-ene click reaction

Journal of Molecular Liquids ◽

10.1016/j.molliq.2018.05.135 ◽

2018 ◽

Vol 265 ◽

pp. 269-275 ◽

Cited By ~ 2

Author(s):

Wensi Li ◽

Shengyu Feng

Keyword(s):

Ionic Liquids ◽

Click Reaction ◽

Picric Acid ◽

Polyhedral Oligomeric Silsesquioxanes ◽

New Sensors

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Unique Functional Materials Derived from β-Amino Acid Oligomers

Australian Journal of Chemistry ◽

10.1071/ch16511 ◽

2017 ◽

Vol 70 (2) ◽

pp. 126 ◽

Cited By ~ 4

Author(s):

Mark P. Del Borgo ◽

Ketav Kulkarni ◽

Marie-Isabel Aguilar

Keyword(s):

Amino Acid ◽

Drug Design ◽

Self Assembly ◽

Functional Materials ◽

Bioactive Molecules ◽

Peptide Drug ◽

New Materials ◽

Amino Acid Oligomers

The unique structures formed by β-amino acid oligomers, or β-peptide foldamers, have been studied for almost two decades, which has led to the discovery of several distinctive structures and bioactive molecules. Recently, this area of research has expanded from conventional peptide drug design to the formation of assemblies and nanomaterials by peptide self-assembly. The unique structures formed by β-peptides give rise to a set of new materials with altered properties that differ from conventional peptide-based materials; such new materials may be useful in several bio- and nanomaterial applications.

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Chelating magnetic copolymer composite modified by click reaction for removal of heavy metal ions from aqueous solution

Chemical Engineering Journal ◽

10.1016/j.cej.2015.12.073 ◽

2016 ◽

Vol 289 ◽

pp. 286-295 ◽

Cited By ~ 40

Author(s):

Songwut Lapwanit ◽

Thanida Trakulsujaritchok ◽

Piyaporn Na Nongkhai

Keyword(s):

Aqueous Solution ◽

Heavy Metal ◽

Metal Ions ◽

Heavy Metal Ions ◽

Click Reaction

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Chiroptical Probing of Lanthanide-Directed Self-Assembly Formation Using btp Ligands Formed in One-Pot Diazo-Transfer/Deprotection Click Reaction from Chiral Amines

Chemistry - A European Journal ◽

10.1002/chem.201504257 ◽

2015 ◽

Vol 22 (2) ◽

pp. 486-490 ◽

Cited By ~ 27

Author(s):

Joseph P. Byrne ◽

Miguel Martínez-Calvo ◽

Robert D. Peacock ◽

Thorfinnur Gunnlaugsson

Keyword(s):

Self Assembly ◽

Click Reaction ◽

Chiral Amines ◽

One Pot

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Aggregation Behaviours of Surface-Active Ionic Liquids 1-Alkyl-3-methylimidazolium Bis(2-ethylhexyl)sulfosuccinate

Australian Journal of Chemistry ◽

10.1071/ch16122 ◽

2016 ◽

Vol 69 (11) ◽

pp. 1254 ◽

Cited By ~ 5

Author(s):

Jiequn Wu ◽

Tianxiang Yin ◽

Shaoxiong Shi ◽

Weiguo Shen

Keyword(s):

Ionic Liquids ◽

Self Assembly ◽

Alkyl Chain ◽

Systematic Investigation ◽

Bulk Solution ◽

Free Energies ◽

Imidazolium Cation ◽

Structure Transition ◽

Surface Active ◽

Counter Ion Binding

The systematic investigation of the aggregation behaviours of newly synthesised surface-active ionic liquids 1-alkyl-3-methylimidazolium bis(2-ethylhexyl)sulfosuccinate ([Cnmim][AOT], n = 2, 3, 5, 6, 7) by various techniques is reported. The critical aggregation concentrations (CACs) and the standard Gibbs free energies of aggregation () were determined from measurements on conductivity, fluorescence, and surface tension, which suggested a stronger self-assembly ability in the bulk solution for [Cnmim][AOT] surfactants with longer alkyl chain cations. An interesting structure transition driven by the penetration of the imidazolium cation into the aggregate when n > 4 was found by analysis of the variations of the values of CAC, , the degree of counter ion binding (β), and the micropolarity (I1/I3) immediately after the CAC with changing alkyl chain length of the imidazolium cation, which was further confirmed by 1H NMR measurements.

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