Multifunctional Fe3O4 nanoparticles-embedded poly(styrene)/poly(thiophene) core/shell composite particles

Kim, Yong Seok; Lee, Seung Mo; Govindaiah, Patakamuri; Lee, Sun Jong; Lee, Seung Hwan; Kim, Jung Hyun; Cheong, In Woo

doi:10.1016/j.synthmet.2013.04.019

Cited by 22 publications

(13 citation statements)

References 23 publications

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“…Among the various semiconductor polymers, polyaniline, polypyrrole, polythiophene and polyindole are the most extensively studied. Other general advantages of conducting polymers are mentioned besides their easy synthesis . However, the major obstacles associated with the effective utilization of these conducting polymers are their poor mechanical properties and insolubility .…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis, characterization and material properties of a novel poly(vinyl cinnamate)/ nickel oxide nanocomposite

Ramesan

Nidhisha

Jayakrishnan

2016

Polymer International

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A poly(vinyl cinnamate) (PVCin) composite was synthesized by a simple one step in situ polymerization of vinyl cinnamate with nickel oxide (NiO) nanoparticles. The structural, morphological and thermal properties of the nanocomposite were characterized using Fourier transform (FT)‐Raman, FT infrared (FTIR) and UV spectroscopies, X‐ray diffraction (XRD), high‐resolution transmission electron microscopy (HRTEM), field emission scanning electron microscopy (FESEM), differential scanning calorimetry and vibrating sample magnetometry (VSM) measurements. FT‐Raman, FTIR and UV spectroscopy results revealed the characteristic absorption and shifts of peaks of the polymer matrix, the shifts being attributed to the interaction of NiO nanoparticles with the polymer chains. The structural and morphological analysis using XRD, HRTEM and FESEM showed the uniform arrangement of nanoparticles within the polymer chains. VSM showed the ferromagnetic nature of the composite with an increasing saturation of magnetism. The glass transition temperature (Tg) of the composite was higher than that of pure PVCin and Tg of the composite increased with increasing nanoparticle content. The electrical resistivity of the nanocomposite was studied from AC and DC conductivity measurements. AC and dielectric properties were markedly enhanced in the whole range of frequency due to the presence of NiO nanoparticles. DC conductivity of the nanocomposite was much higher than that of PVCin and the conductivity of the nanocomposite increased with increasing content of NiO nanoparticles. © 2016 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Facile synthesis, characterization and material properties of a novel poly(vinyl cinnamate)/ nickel oxide nanocomposite

Ramesan

Nidhisha

Jayakrishnan

2016

Polymer International

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“…At first, magnetic NPs (MNPs) were synthesized by a co‐precipitation method and basic ammonia solution was injected to impart a positive charge to the MNPs. These iron oxide beads were coated with polystyrene (PS‐MNPs) according to a previously reported method, the so‐called mini‐emulsion polymerization . In this process, anionic SDS molecules are added, giving the PS‐MNPs a negative electrical charge.…”

Section: Resultsmentioning

confidence: 99%

“…The product was washed with ethanol/water (1:1, v/v) three times and dried in a vacuum dryer at −50°C. Subsequently, the PS‐MNP beads were prepared by the mini‐emulsion polymerization method, as shown in Figure S1(b) (supporting information) . A solution of the MNPs (0.33 g), 1‐hexadecanol (0.2 g), and styrene (6.6 mL) was sonicated in a water bath for 30 min.…”

Section: Methodsmentioning

confidence: 99%

“…according to a previously reported method, the so-called miniemulsion polymerization. 25 that is, Au-MAGs were beyond the zeta-potential range of ±30 mV.…”

Section: Characterization Of the Au-mag Beadsmentioning

confidence: 98%

“…Subsequently, the PS-MNP beads were prepared by the mini-emulsion polymerization method, as shown in Figure S1(b) (supporting information). 25 A solution of the MNPs (0.33 g), 1-hexadecanol (0.2 g), and styrene (6.6 mL) was sonicated in a water bath for 30 min. An SDS solution (0.16%, 50 mL) was added to the above solution, which was sonicated with a homogenizer.…”

Section: Synthesis Of Polystyrene-coated Magnetic Nps (Ps-mnps)mentioning

confidence: 99%

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Gold‐nanoparticle‐coated magnetic beads for concentration and ionization of analytes for laser desorption/ionization mass spectrometry

Kim

Park

Noh

et al. 2019

Rapid Comm Mass Spectrometry

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Rationale Magnetic particles coated with gold nanoparticles (Au NPs) (Au‐MAGs) were developed and used (1) for sample concentration and (2) as a solid matrix for laser adsorption/desorption mass spectrometry (LDI‐MS). Methods The Au‐MAGs were prepared by (1) coating polystyrene on iron oxide NPs (PS‐MNPs), (2) coating poly‐l‐lysine on the PS‐MNPs (PLL‐coated PS‐MNPs), and (3) coating negatively charged Au NPs on the PLL‐coated PS‐MNPs (Au‐MAGs). Results The Au‐MAGs were used to concentrate the target analyte by means of electrostatic interactions between the positively charged GHP9 and the negatively charged Au‐MAGs as well as selective interactions (such as gold–sulfur interactions) between glutathione (GSH) and Au‐MAGs. Then, the concentrated analyte could be ionized for LDI‐MS. Conclusions The Au‐MAGs were demonstrated (1) to concentrate the target analyte in a sample solution, tested by electrostatic interactions and selective interactions between gold and sulfur and (2) to ionize the concentrated analyte for LDI‐MS.

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Improved Power Conversion Efficiency of P3HT:PCBM Organic Solar Cells by Strong Spin–Orbit Coupling‐Induced Delayed Fluorescence

González

Körstgens

Yao

et al. 2015

Advanced Energy Materials

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Solution‐processed organic bulk heterojunction solar cells based on poly(3‐hexylthiophene) (P3HT) blended with [6,6]‐phenyl‐C60‐butyric acid methyl ester are doped with different concentrations of iron (II,III) oxide nanoparticles (Fe3O4). The power conversion efficiency of the devices doped at low concentrations is improved up to 11%. The improvement finds its origin in a lower recombination current, which is a consequence of an increased effective exciton lifetime according to the J–V characteristics and the optoelectronical analysis of the films. The increase in performance cannot be attributed to changes in morphology or crystallinity according to grazing‐incidence X‐ray scattering experiments. The evolution of the solar cell short‐circuit current at low doping concentrations is related to variations in the arrangement of the crystalline regions of P3HT. For high doping concentrations (above 1.0 wt%) the performance of the solar cell decays rapidly, ascribed to the increased leakage currents in the device caused by the presence of nanoparticles.

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Multifunctional Fe3O4 nanoparticles-embedded poly(styrene)/poly(thiophene) core/shell composite particles

Cited by 22 publications

References 23 publications

Facile synthesis, characterization and material properties of a novel poly(vinyl cinnamate)/ nickel oxide nanocomposite

Facile synthesis, characterization and material properties of a novel poly(vinyl cinnamate)/ nickel oxide nanocomposite

Gold‐nanoparticle‐coated magnetic beads for concentration and ionization of analytes for laser desorption/ionization mass spectrometry

Improved Power Conversion Efficiency of P3HT:PCBM Organic Solar Cells by Strong Spin–Orbit Coupling‐Induced Delayed Fluorescence

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