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414565

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Synthesis of monodisperse poly(divinylbenzene) microspheres
Li K and Stover HDH
Journal of Polymer Science Part A: Polymer Chemistry, 31, 3257-3263 null
Dalia Y Sosa et al.
Molecules (Basel, Switzerland), 20(1), 52-69 (2014-12-30)
The semicontinuous heterophase polymerization of styrene in the presence of cross-linking and porogen agents was carried out. Latexes with close to 20% solid content, which contained mesoporous nanoparticles with 28 nm in average diameters, up to 0.5 cm3/g in porosity...
Fabrication of activated carbons with well-defined macropores derived from sulfonated poly (divinylbenzene) networks.
Hasegawa, et al.
Carbon, 48(6), 1757-1766 (2010)
Seshadri Reddy Ankireddy et al.
International journal of nanomedicine, 10 Spec Iss, 121-128 (2015-09-09)
Microbeads are frequently used as solid supports for biomolecules such as proteins and nucleic acids in heterogeneous microfluidic assays. Chip-based, quantum dot (QD)-bead-biomolecule probes have been used for the detection of various types of DNA. In this study, we developed...
Bonnie S Watson et al.
Plant physiology, 167(4), 1699-1716 (2015-02-11)
Integrated metabolomics and transcriptomics of Medicago truncatula seedling border cells and root tips revealed substantial metabolic differences between these distinct and spatially segregated root regions. Large differential increases in oxylipin-pathway lipoxygenases and auxin-responsive transcript levels in border cells corresponded to...
Toine Hillenaar et al.
Investigative ophthalmology & visual science, 52(5), 2136-2146 (2010-11-13)
To report intra- and interinstrument calibration methods for corneal backscatter analysis by in vivo confocal microscopy. Applicability of two reference standards was evaluated for corneal backscatter calibration. Repeated measurements of four concentrations of AMCO Clear (GFS Chemicals, Inc., Powell, OH)...
Shuai Xu et al.
Langmuir : the ACS journal of surfaces and colloids, 28(6), 3271-3278 (2012-02-01)
An effective method was developed for synthesizing magnetite/polymer colloidal composite microspheres with controllable variations in size and shape of the nanostructures and desirable interfacial chemical functionalities, using surfactant-free seeded emulsion polymerization with magnetite (Fe(3)O(4)) colloidal nanocrystal clusters (CNCs) as the...
Jing Song et al.
Journal of colloid and interface science, 452, 190-198 (2015-05-06)
The layer-by-layer (LBL) technique was employed for preparing fluorescent microspheres with a core-shell structure by the alternating adsorption of positively charged poly(p-phenylenevinylene) precursor (pre-PPV) and the polyanions onto polymer substrate spheres, followed by the thermal elimination to convert pre-PPV into...
K M Frankowski et al.
Journal of dairy science, 97(9), 5356-5370 (2014-07-16)
Many food companies are trying to limit the amount of sodium in their products. Permeate, the liquid remaining after whey or milk is ultrafiltered, has been suggested as a salt substitute. The objective of this study was to determine the...
Chariya Kaewsaneha et al.
ACS applied materials & interfaces, 7(42), 23373-23386 (2015-10-07)
Fluorescent-magnetic particles (FMPs) play important roles in modern materials, especially as nanoscale devices in the biomedical field. The interesting features of FMPs are attributed to their dual detection ability, i.e., fluorescent and magnetic modes. Functionalization of FMPs can be performed...
Igor Jerković et al.
Natural product communications, 10(2), 357-360 (2015-04-30)
Headspace solid-phase microextraction (HS-SPME), ultrasonic solvent extraction (USE) and solid phase extraction (SPE), followed by GC-FID/MS were used for screening of dandelion (Taraxacum officinale Weber) honey headspace, volatiles and semi-volatiles. The obtained results constitute a breakthrough towards screening of dandelion...
Yan-Shan Huang et al.
PloS one, 9(12), e115840-e115840 (2014-12-24)
The purpose of the present work was to develop a novel, long-acting and potent human serum albumin/granulocyte colony stimulating factor (HSA/G-CSF) therapeutic fusion protein. The novel fusion protein, called HMG, was constructed by genetically fusing mutated human derived G-CSF (mG-CSF)...
Trishna Saigal et al.
Langmuir : the ACS journal of surfaces and colloids, 29(12), 3999-4007 (2013-03-02)
Multiarm star copolymers with approximately 460 poly(ethylene oxide) (PEO) arms that have a degree of polymerization N = 45 were synthesized via atom transfer radical polymerization (ATRP) of PEO-methacrylate macromonomers in the presence of divinyl benzene cross-linkers. These are an...
Jiangyong Gu et al.
Journal of chromatography. A, 1218(45), 8150-8155 (2011-10-11)
In this work, we prepared a monolithic and surface initiated molecularly imprinted polymeric (MIP) column for HPLC and explored its application for template separation from plant extract. The silica beads (40-60 μm) were coupled with initiator on the surface and...
I Zabaleta et al.
Journal of chromatography. A, 1387, 13-23 (2015-02-25)
An analytical method for the simultaneous determination in fish liver and muscle tissue and mussel samples of 14 perfluorinated compounds (PFCs), including three perfluoroalkylsulfonates (PFSAs), seven perfluorocarboxylic acids (PFCAs), three perfluorophosphonic acids (PFPAs) and perfluorooctanesulfonamide (PFOSA), and 10 potential precursors...
Peter J Oefner et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 782(1-2), 27-55 (2002-11-30)
The introduction of alkylated, nonporous poly-(styrene-divinylbenzene) microparticles in 1992 enabled the subsequent development of denaturing HPLC that has emerged as the most sensitive screening method for mutations to date. Denaturing HPLC has provided unprecedented insight into human origins and prehistoric...
Rainer Koeck et al.
Analytical and bioanalytical chemistry, 406(24), 5897-5907 (2014-07-25)
Short-term polymerization or the so-called low-conversion polymerization was applied for the preparation of N-vinylcarbazole (NVC) and 1,4-divinylbenzene (DVB) monolithic capillary columns. The synthesis was carried out by thermally initiated free radical copolymerization under the influence of inert micro- (toluene) and...
Synthesis and Characterization of Linear Poly (divinylbenzene-co-ethylvinylbenzene) via a Cationic Solid Catalyst.
Bensaada N, et al.
Orient. J. Chem., 29(4), 1631-1635 (2014)
Elżbieta Kociołek-Balawejder et al.
Journal of hazardous materials, 189(3), 794-800 (2011-04-09)
The possibility of oxidizing As(III) to As(V) in aqueous solutions by means of heterogeneous oxidants, i.e. synthetic macromolecular redox compounds, was studied. The materials contain N-chlorosulfonamide functional groups in the sodium form: [P]-SO(2)NClNa (R/ClNa, 2.1 mmol/g) or in the hydrogen...
Stanisław Popiel et al.
Analytica chimica acta, 837, 52-63 (2014-07-09)
Novel solid-phase microextraction (SPME) fibres containing methyl, ethyl, butyl acrylate and methacrylate were first prepared by a sol-gel technique and investigated for determination of selected organoarsenic compounds (lewisite, methyldichloroarsine, phenyldichloroarsine, diphenylchloroarsine and triphenylarsine) from water samples. The influence of sorption...
Maria Serrano et al.
Journal of chromatography. A, 1407, 208-215 (2015-07-15)
Haloketones (HKs) are unregulated volatile disinfection by-products that show some potential risk even at low concentrations. While EPA Method 551.1 involves conventional liquid-liquid extraction and a complex series of steps, the simple scientific principles of solid-phase microextraction (SPME) in the...
R Dario Arrua et al.
Journal of chromatography. A, 1273, 26-33 (2013-01-01)
Rigid monolithic cryostructures were prepared in capillary format at sub-zero temperatures and used successfully in the separation of proteins by hydrophobic interaction chromatography (HIC). The polymerization mixture consisted of poly(ethyleneglycol) diacrylate (PEGDA) M(n)∼258 as the single monomer, a mixture of...
Jingbin Zeng et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1000, 169-175 (2015-08-08)
In this work, an ordered mesoporous carbon (OMC)/Nafion coated fiber for solid-phase microextraction (SPME) was prepared and used as the working electrode for electro-enhanced SPME (EE-SPME) of amphetamines. The EE-SPME strategy is primarily based on the electro-migration and complementary charge...
E Passas-Lagos et al.
Langmuir : the ACS journal of surfaces and colloids, 31(28), 7749-7757 (2015-07-15)
Iron-based mushroom-type Janus particles consisting of a poly(sytrene-co-divinylbenzene) and a silica moiety both with controllable morphologies were successfully synthesized on the gram scale and investigated as surfactants for Pickering emulsions. Two oil-water model systems, namely toluene-water and vegetable oil-water, were...
Rika Homma et al.
Journal of agricultural and food chemistry, 63(46), 10161-10169 (2015-10-28)
The impact of association colloids on lipid oxidation in triacylglycerols and fatty acid ethyl esters was investigated. Association colloids did not affect lipid oxidation of high oleic safflower and high linoleic safflower triacylglycerols, but were prooxidative in fish triacylglycerols. Association...
Ikuo Ueta et al.
Analytica chimica acta, 746, 77-83 (2012-09-15)
A novel needle-type sample preparation device was developed for the effective preconcentration of volatile organic compounds (VOCs) in indoor air before gas chromatography-mass spectrometry (GC-MS) analysis. To develop a device for extracting a wide range of VOCs typically found in...
Maryam Lashgari et al.
Talanta, 141, 200-206 (2015-05-13)
In the present study, micro-solid phase extraction (µ-SPE) followed by liquid chromatography-triple tandem mass spectrometery (LC-MS/MS) was developed for the determination of perfluorocarboxylic acids (PFCAs) at trace levels in water samples. The µ-SPE device comprised of a porous polypropylene membrane...
Freek Spitaels et al.
Food microbiology, 47, 1-11 (2015-01-15)
Gueuze beers are prepared by mixing young and old lambic beers and are bottle-refermented spontaneously for aging. The present study analyzed the microbiota and metabolites present in gueuze beers that were aged between a few months and up to 17...
A MIP-based low-cost electrochemical sensor for 2-furaldehyde detection in beverages.
Pesavento, et al.
Analytica Chimica Acta, 1142, 201-210 (2020)
Christof Björn Steingass et al.
Analytical and bioanalytical chemistry, 407(9), 2591-2608 (2015-02-24)
Qualitative ripening-dependent changes of pineapple volatiles were studied via headspace solid-phase microextraction and analyzed by comprehensive two-dimensional gas chromatography quadrupole mass spectrometry (HS-SPME-GC×GC-qMS). Early green-ripe stage, post-harvest ripened, and green-ripe fruits at the end of their commercial shelf-life were compared...
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