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244511

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Cemil Aydoğan
Journal of chromatography. A, 1392, 63-68 (2015-03-31)
In this study, an anion-exchange/hydrophobic polymethacrylate-based stationary phase was prepared for nano-liquid chromatography of small organic molecules and inorganic anions. The stationary phase was synthesized by in situ polymerization of 3-chloro-2-hydroxypropylmethacrylate and ethylene dimethacrylate inside silanized 100 μm i.d. fused...
Fei Shen et al.
Analytical and bioanalytical chemistry, 408(7), 1829-1841 (2015-11-10)
The interaction affinity between human IgG and a short peptide ligand (hexameric HWRGWV) was investigated by following the shifts in frequency and energy dissipation in a quartz crystal microbalance (QCM). HWRGWV was immobilized by means of poly(ethylene glycol) tethered on...
Peter Wardrop et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 990, 1-6 (2015-04-02)
Polybrominated diphenyl ethers (PBDEs) have become ubiquitous environmental contaminants due to their incorporation into many consumer products. Their ability to bioaccumulate to alarming levels in fat-rich matrices such as fish demands fast and efficient methods to monitor these contaminants. We...
Ahmad El-Hellani et al.
Chemical research in toxicology, 28(8), 1532-1537 (2015-07-15)
As with other tobacco aerosols, nicotine delivery from e-cigarettes (ECIG) depends on the total nicotine and its partitioning between free-base (Nic) and protonated (NicH(+)) forms. Previous studies of ECIG nicotine emissions have generally reported "nicotine yield" without attention to whether...
Sumin Kim et al.
Talanta, 140, 183-188 (2015-06-07)
In this work, a chemiluminescence (CL) immunoassay with targeted inhibition was developed for the determination of toxins in food products. For sample treatment, amine-functionalized magnetic nanoparticles (MNPs) were synthesized to extract target molecules, and horseradish peroxidase (HRP) tagged on an...
Grigorios-Panagiotis Rigas et al.
Nature communications, 7, 13531-13531 (2016-11-23)
Single-crystal semiconductors have been at the forefront of scientific interest for more than 70 years, serving as the backbone of electronic devices. Inorganic single crystals are typically grown from a melt using time-consuming and energy-intensive processes. Organic semiconductor single crystals...
Bret H Clough et al.
Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research, 30(1), 83-94 (2014-08-19)
Although bone has remarkable regenerative capacity, about 10% of long bone fractures and 25% to 40% of vertebral fusion procedures fail to heal. In such instances, a scaffold is employed to bridge the lesion and accommodate osteoprogenitors. Although synthetic bone...
F Deng et al.
Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology, 14(7), 1265-1270 (2015-06-13)
Non-coherent sensitized red-to-green upconversion has been achieved utilizing platinum(II) tetraphenyltetrabenzoporphyrin (PtTPTBP) as the triplet sensitizer and a nearly quantitatively fluorescent meso-(2,6-dichloropyridyl)-substituted boron dipyrromethene (Cl2PyBODIPY) chromophore (Φ = 0.99 in toluene) as the energy acceptor/annihilator in deoxygenated toluene. Dynamic Stern-Volmer analysis...
Tino Jaschinski et al.
Rapid communications in mass spectrometry : RCM, 28(13), 1521-1529 (2014-05-28)
Laser desorption ionization for mass spectrometric measurements (LDI MS) is supported by nanostructured materials. This technique helps to overcome known limitations of matrix-assisted laser desorption/ionization (MALDI) and especially avoids interfering signals caused by matrix components. LDI can be supported by...
G R Willis et al.
BJOG : an international journal of obstetrics and gynaecology, 121(13), 1596-1603 (2014-05-13)
To assess circulating biochemical indices of endothelial function and nitro-oxidative stress in women with polycystic ovary syndrome (PCOS). Case-control study. Seventeen women with PCOS and eighteen age- and body mass index-matched healthy volunteers. Nitric oxide (NO) metabolite levels were assessed...
Wen-Hsi Cheng et al.
Journal of the Air & Waste Management Association (1995), 64(4), 488-493 (2014-05-23)
In this study, gaseous benzene, toluene, ethylbenzene, and o-xylene (BTEX) were extracted by passive needle trap samplers (NTS) using divinylbenzene (DVB) particles (mesh sizes 60-80, 80-100, and 100-120, respectively) as packed sorbents. An aspirating pump measured sampling flow rates of...
Hai Gen Zuo et al.
Environmental monitoring and assessment, 187(7), 394-394 (2015-06-04)
Malathion is an organophosphorous insecticide for controlling insects on fruits and vegetables, miscellaneous household insects, and animal parasites. It is important to develop highly efficient and selective pre-treatment method for analyzing malathion residues in environment and samples from agricultural products...
M A Caporizzo et al.
Langmuir : the ACS journal of surfaces and colloids, 31(10), 3027-3038 (2015-02-18)
This study systematically investigates how polymer composition changes nanoparticle (NP) grafting and diffusion in solvated random copolymer thin films. By thermal annealing from 135 to 200 °C, thin films with a range of hydrophobicity are generated by varying acrylic acid...
Neda Samadi et al.
Pharmaceutical research, 31(10), 2593-2604 (2014-03-15)
To investigate the effect of polyethylene glycol (PEG) in nanoparticles based on blends of hydroxylated aliphatic polyester, poly(D,L-lactic-co-glycolic-co-hydroxymethyl glycolic acid) (PLGHMGA) and PEG-PLGHMGA block copolymers on their degradation and release behavior. Protein-loaded nanoparticles were prepared with blends of varying ratios...
Christopher M Filley et al.
Journal of neuropathology and experimental neurology, 63(1), 1-12 (2004-01-30)
In recent decades the organic solvent toluene (methylbenzene) has emerged as one of the best-studied neurotoxins. Long-term and intense exposure to toluene vapors in humans who abuse spray paint and related substances has led to the recognition that toluene has...
Remle Celenligil-Cetin et al.
Inorganic chemistry, 47(23), 10998-11009 (2008-10-22)
Redox events involving both metal and ligand sites are receiving increased attention since a number of biological processes direct redox equivalents toward functional residues. Metalloradical synthetic analogues remain scarce and require better definition of their mode of formation and subsequent...
Electrochemical doping of graphene with toluene.
Kaverzin AA, et al.
Carbon, 49(12), 3829-3834 (2011)
Zheng Qiao et al.
Journal of chromatography. A, 1393, 18-25 (2015-03-31)
In this present study, magnetic Fe3O4@SiO2 nanoparticles (MNPs) functionalized with octadecyl groups (Fe3O4@SiO2-C18 NPs) were synthesized, characterized and employed, for the first time, as powerful nanosorbent to extract endogenous volatile organic metabolites (EVOMs) namely, hexanal, heptanal, decanal, benzaldehyde, 4-heptanone, 5-methyl-2-furfural...
Ritwika Ray et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 20(47), 15618-15624 (2014-10-07)
The present article describes novel oxidative protocols for direct esterification of alcohols. The protocols involve successful demonstrations of both "cross" and "self" esterification of a wide variety of alcohols. The cross-esterification proceeds under a simple transition-metal-free condition, containing catalytic amounts...
Alicia J Sawdon et al.
Colloids and surfaces. B, Biointerfaces, 122, 738-745 (2014-09-07)
Polymeric prodrug micelles for delivery of acyclovir (ACV) were synthesized. First, ACV was used directly to initiate ring-opening polymerization of ɛ-caprolactone to form ACV-polycaprolactone (ACV-PCL). Through conjugation of hydrophobic ACV-PCL with hydrophilic methoxy poly(ethylene glycol) (MPEG) or chitosan, polymeric micelles...
Jeffrey Mark Halpern et al.
ACS applied materials & interfaces, 7(21), 11315-11321 (2015-05-12)
Controlling the sensing properties of a silicon nanowire field effect transistor is dependent on the surface chemistry of the silicon nanowire. A standard silicon nanowire has a passive oxide layer (native oxide), which has trap states that cause sensing inaccuracies...
Olesya Yarema et al.
ACS nano, 9(11), 11134-11142 (2015-09-16)
Ternary I-III-VI nanocrystals, such as silver indium selenide (AISe), are candidates to replace cadmium- and lead-based chalcogenide nanocrystals as efficient emitters in the visible and near IR, but, due to challenges in controlling the reactivities of the group I and...
V Kolaříková et al.
Dalton transactions (Cambridge, England : 2003), 44(45), 19663-19673 (2015-09-17)
Using three different approaches, racemic 1-(perfluoroalkyl)ethylamines were synthesized from perfluoroalkyl iodides or perfluoroalkanoic acids, and further transformed to the corresponding N,N'-disubstituted ethane-1,2-diimines and ethane-1,2-diamines as mixtures of diastereoisomers. Their cyclization afforded imidazolium or dihydroimidazolium salts, which led to silver or...
Hae Jin Kim et al.
Journal of experimental botany, 66(14), 4251-4265 (2015-05-15)
Seeds of members of the genus Cuphea accumulate medium-chain fatty acids (MCFAs; 8:0-14:0). MCFA- and palmitic acid- (16:0) rich vegetable oils have received attention for jet fuel production, given their similarity in chain length to Jet A fuel hydrocarbons. Studies...
Changdeuck Bae et al.
Scientific reports, 5, 9339-9339 (2015-03-24)
Rational synthesis of coordinated spherical colloids is reported by site-selective growth of secondary hemispherical patches on primary spherical particles with quasi-defined coordination numbers and positions. We clarify the importance of mass transport phenomena on the site-specific secondary nucleation/growth in nanoparticulate...
Hao Wu et al.
PloS one, 10(6), e0130856-e0130856 (2015-06-27)
The opaque-2 (o2) mutation of maize increases lysine content, but the low seed density and soft texture of this type of mutant are undesirable. Lines with modifiers of the soft kernel phenotype (mo2) called "Quality Protein Maize" (QPM) have high...
Tatsuya Aotake et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 21(13), 4966-4974 (2015-02-25)
An optically and thermally responsive boron dipyrromethene (BODIPY) dye, namely, meso-2-(9,10-dihydro-9,10-ethanoanthracene-11,12-dione) (DK)-linked, bicyclo[2.2.2]octadiene (BCOD)-fused BODIPY (BCOD-DK), was synthesized. The weakly luminous structure of BCOD-DK can be changed quantitatively to that of the strongly fluorescent BODIPY BCOD-Ant by optical excitation at...
Shahul Hameed P et al.
Nature communications, 6, 6715-6715 (2015-04-01)
The widespread emergence of Plasmodium falciparum (Pf) strains resistant to frontline agents has fuelled the search for fast-acting agents with novel mechanism of action. Here, we report the discovery and optimization of novel antimalarial compounds, the triaminopyrimidines (TAPs), which emerged...
Laura Pasquardini et al.
Biosensors & bioelectronics, 68, 500-507 (2015-01-31)
The need for decentralized clinical tests together with the concept of time and cost saving are pushing the development of portable, miniaturized, compact biosensors with diagnostic and prognostic purpose. Here, we propose an innovative detection system based on a Single...
Nader Khodaee et al.
Talanta, 147, 59-62 (2015-11-26)
A simple solventless injection method was introduced based on the using of a solid-phase microextraction (SPME) fiber for injection of large amounts of the analytes extracted by the magnetic solid phase extraction (MSPE) procedure. The resulted extract from MSPE procedure...
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