ZnS nanoparticle synthesis and stability of 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4]) under glow discharge plasma

Kareem, T. Abdul; Kaliani, A. Anu

doi:10.1007/s11581-013-0877-2

Cited by 8 publications

(9 citation statements)

References 15 publications

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“…Plasma-assisted electro-polymerization is a new research field on the interaction of plasma with monomer and electrolyte solution, and it uses plasma to drive the chemical reactions [1,2,3,4,5,6]. Electrochemically controlled formation of thin polymer films using plasma is one of the feasible routes to design new functional polymer materials.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of Plasma-Polymerized Methyl Methacrylate via the Atmospheric Pressure Plasma Polymerization Technique

et al. 2019

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Pinhole free layers are needed in order to prevent oxygen and water from damaging flexible electrical and bio-devices. Although polymerized methyl methacrylate (polymethyl methacrylate, PMMA) for the pinhole free layer has been studied extensively in the past, little work has been done on synthesizing films of this material using atmospheric pressure plasma-assisted electro-polymerization. Herein, we report the synthesis and properties of plasma-PMMA (pPMMA) synthesized using the atmospheric pressure plasma-assisted electro-polymerization technique at room temperature. According to the Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and time of flight-secondary ion mass spectrometry (ToF-SIMS) results, the characteristic peaks from the pPMMA polymer chain were shown to have been detected. The results indicate that the percentage of hydrophobic groups (C–C and C–H) is greater than that of hydrophilic groups (C–O and O–C=O). The field emission-scanning electron microscope (FE-SEM) and thickness measurement results show that the surface morphology is quite homogenous and amorphous in nature, and the newly proposed pPMMA film at a thickness of 1.5 µm has high transmittance (about 93%) characteristics. In addition, the results of water contact angle tests show that pPMMA thin films can improve the hydrophobicity.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of Plasma-Polymerized Methyl Methacrylate via the Atmospheric Pressure Plasma Polymerization Technique

et al. 2019

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“…The lattice structure of these core@shell QDs is further characterized by high-resolution TEM observation. As shown in Figure 2c, an interplanar spacing of 0.32 nm corresponds well to the (111) plane of the ZnS shell, 37 indicating the QDs prepared here have good crystal quality. Besides, Figure S5 clearly shows an interplanar spacing of 0.35 nm, which corresponds to the (002) plane of the CdSe core.…”

Section: ■ Results and Discussionmentioning

confidence: 57%

Manipulating Transfer and Separation of Photocarriers in Monolayer WS₂ via CdSe Quantum Dot Doping

Feng

Gao

et al. 2020

ACS Photonics

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Flexibly manipulating optical and electrical properties of 2D materials is of great importance to extend their functional applications in the advanced optoelectronic field. Herein, a type II 2D/0D hybrid heterostructure is facilely fabricated by spin-coating CdSe quantum dots (CdSe-QDs) onto monolayer WS2 (1L-WS2) flakes, and improved fluorescence emission and electron density of 1L-WS2 have been achieved through effective CdSe-QDs doping. The interfacial charge behavior is explored via X-ray photoelectron spectroscopy, scanning Kelvin probe force microscopy studies, and time-resolved photoluminescence measurements, proving the charge transfer from QDs to 1L-WS2 in these heterostructures. Furthermore, the photocurrent of a photodetector based on this hybrid heterostructure increases significantly due to efficient and fast separation and collection of photocarriers, verifying the validity of our proposed carrier dynamic model. The current work proposes a convenient strategy for tuning the photonic and electronic properties of 2D semiconducting materials, which may pave the way for developing new-type optoelectronic devices based on these newly emerging 2D materials and heterostructures.

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“…Figure 4B shows an FTIR transmission spectrum for the purified [EMIM] [BF 4 ]. 28,29 The peaks between 2800-3000 cm −1 originate from the ethyl side chain (i.e., the butyl side chain of BMIM) attached to the imidazolium ring. These peaks are attributed to symmetric and asymmetric stretches of sp 3 -bonded CH 2 and CH 3 groups.…”

Section: Resultsmentioning

confidence: 99%

Rapid Preparation of Room Temperature Ionic Liquids with Low Water Content as Characterized with a ta-C:N Electrode

Jarošová

Swain

2015

J. Electrochem. Soc.

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Room temperature ionic liquids (RTILs) provide an ionic, solvent-free medium for electrochemical reactions. RTILs are appreciated for their many unique properties; nevertheless, it is precisely these qualities that can be very easily debased by water and organic impurities. Water, as a major contaminant in hygroscopic RTILs, has a strong effect on the physical and electrochemical properties (e.g., viscosity and dielectric constant, hence the background voltammetric current, diffusion coefficient of redox analytes and electron-transfer kinetics). In this work, a simple and relatively rapid purification process was investigated that involves sparging ultrahigh purity Ar through the RTIL while being heated at 70 • C (so-called sweeping). A more conventional vacuum drying method at 80 • C was used for comparison. The electrochemical properties of two RTILs, [BMIM] [BF 4 ] and [EMIM] [BF 4 ], were assessed voltammetrically using a nitrogen-incorporated tetrahedral amorphous carbon (ta-C:N) thin-film electrode. We found the sweeping purification method to be superior to vacuum drying in terms of more timely and effective removal of water. In addition, we present for the first time some of the basic electrochemical properties of novel ta-C:N electrode in contact with a RTIL. Room temperature ionic liquids (RTILs) are pure salts with melting points near or below room temperature.1,2 Many ILs are composed of a bulky organic cation, like 1-ethyl-3-methylimidazolium, and a smaller inorganic anion, such as tetrafluoroborate. Equal numbers of positive and negative ions are present so the whole liquid is electrically neutral. Importantly, there is no solvent so the interfacial structure of an RTIL at an electrified interface is expected to be quite distinct from that of a typical aqueous electrolyte solution. It is also likely that the interfacial structure will depend on the carbon electrode microstructure and surface chemistry. 3 The conventional Gouy-Chapman-Stern model used to describe the electric double layer in aqueous or organic electrolytes is probably inappropriate for describing the interfacial structure in an ionic liquid. 4 In addition, the solution environment around a redox analyte will be different in an RTIL than in an aqueous electrolyte. How this environment affects electron-transfer kinetics and mechanisms at carbon electrodes is the focus of our ongoing research. RTIL properties useful for electrochemical applications include negligible vapor pressure, high thermal and chemical stability, moderate electrical conductivity, non-flammability and a wide working potential window or breakdown voltage. They are appreciated in many areas of chemistry and electrochemistry as a "green" 5-7 recyclable alternative to traditional organic solvents for batteries 8,9 and fuel cells. 10,11Depending on the electrode and the RTIL, the electrochemical potential window or breakdown voltage can be on the order of 5-6 V. 1,2,12,13 This is dependent on the purity of the RTIL because the nature and concentration of contaminants...

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ZnS nanoparticle synthesis and stability of 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4]) under glow discharge plasma

Cited by 8 publications

References 15 publications

Synthesis and Properties of Plasma-Polymerized Methyl Methacrylate via the Atmospheric Pressure Plasma Polymerization Technique

Synthesis and Properties of Plasma-Polymerized Methyl Methacrylate via the Atmospheric Pressure Plasma Polymerization Technique

Manipulating Transfer and Separation of Photocarriers in Monolayer WS₂ via CdSe Quantum Dot Doping

Rapid Preparation of Room Temperature Ionic Liquids with Low Water Content as Characterized with a ta-C:N Electrode

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ZnS nanoparticle synthesis and stability of 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4]) under glow discharge plasma

Cited by 8 publications

References 15 publications

Synthesis and Properties of Plasma-Polymerized Methyl Methacrylate via the Atmospheric Pressure Plasma Polymerization Technique

Synthesis and Properties of Plasma-Polymerized Methyl Methacrylate via the Atmospheric Pressure Plasma Polymerization Technique

Manipulating Transfer and Separation of Photocarriers in Monolayer WS2 via CdSe Quantum Dot Doping

Rapid Preparation of Room Temperature Ionic Liquids with Low Water Content as Characterized with a ta-C:N Electrode

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Manipulating Transfer and Separation of Photocarriers in Monolayer WS₂ via CdSe Quantum Dot Doping