bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modular “Click” Preparation of Bifunctional Polymeric Heterometallic Catalysts
Authors: Wang Wenlong , Zhao Liyuan , Lv Hui , Zhang Guodong , Xia Chungu , Hahn F. Ekkehardt , Li Fuwei 
Published: March 2016

AbstractHeterobimetallic molecular complexes or strictly alternating metallated polymers are obtained by a click reaction between mononuclear metal complexes (secondary building units, SBUs) bearing NHCs functionalized with either p‐azidophenyl or p‐ethynylphenyl wingtips. With a copper‐NHC complex as SBU the formation of molecular or polymeric compounds did not require any additives as the copper complex catalyzes the click reaction. Transmetallation from heterobimetallic Cu/Ag derivatives to Cu/Pd derivatives was achieved. The linker between the SBUs (flexible or rigid) influences the catalytic activity of the heterobimetallic compounds. The polymer with alternating copper‐NHC and silver‐NHC units and a flexible methylene‐triazole bridge between them shows the highest activity in the catalytic alkynylation of trifluoromethyl ketones to give fluorinated propargylic alcohols.
UVA and UVC modification of photo polymeric surface and application for flexographic deposition of thin coatings
Authors: Tomašegović Tamara , Poljaček Sanja Mahović , Leskovac Mirela 
Published: March 2016

ABSTRACTThe object of this research was to perform, characterize, and apply the functional modification of flexographic photo polymeric printing plate surface by UVA and UVC post‐treatments. Photo polymeric printing plates have an important application in functional printing, where new printing inks/coatings and substrate formulations are used and the specific qualitative requirements must be met. The limitations of materials and processes often require expensive reformulations of the functional inks to achieve printability. Results of this research showed that the modification of the photo polymeric printing plate surface at the end of its production process can be used to precisely adjust the printing ink transfer to the printing substrate and thus eliminate the need for changing the ink/coating composition. By applying specific UV post‐treatment, one can create a flexographic coating deposition system of tailored properties adjustable to variable reproduction systems with high quality requirements. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43526.
The effect of UV irradiation on the electrospun PCL/TiO2 composites fibers
Authors: Bajsić Emi Govorčin , Mijović Budimir , Penava Nina Vranješ , Grgurić Tamara Holjevac , Slouf Miroslav , Zdraveva Emilija 
Published: March 2016

ABSTRACTThe effect of UV irradiation and micro‐ and nano‐TiO2 as well as titanate nanotubes (TiNT) on the phase morphology and thermal properties of the electrospun PCL composite fibers was investigated. Polycaprolactone (PCL)/TiO2 (micro‐ and nano‐TiO2 as well as titanate nanotubes) composite fibers were prepared by electrospinning a polymer solution. The PCL and PCL/TiO2 composite fibers were exposed to UV light at irradiation times of 5 and 10 days. After UV irradiation the crystallinity of the electrospun PCL/TiNTcomposite fibers increased because of the large specific surface area of TiNT. The thermal stability of the PCL/TiNT electrospun composite fibers increased due to the formation of crosslinking structure after UV irradiation. The SEM analysis suggests that after UV radiation the fibers showed high degree of degradation due to the high number of fibers breakages and fibers surface voids. The results of FTIR spectroscopy confirmed that the TiO2 particles enhance the degradation process because of their photocatalytic activity. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43539.
Maternal residential exposure to agricultural pesticides and birth defects in a 2003 to 2005 North Carolina birth cohort
Authors: Rappazzo Kristen M. , Warren Joshua L. , Meyer Robert E. , Herring Amy H. , Sanders Alison P. , Brownstein Naomi C. , Luben Thomas J. 
Published: March 2016

BackgroundBirth defects are responsible for a large proportion of disability and infant mortality. Exposure to a variety of pesticides have been linked to increased risk of birth defects.MethodsWe conducted a case–control study to estimate the associations between a residence‐based metric of agricultural pesticide exposure and birth defects. We linked singleton live birth records for 2003 to 2005 from the North Carolina (NC) State Center for Health Statistics to data from the NC Birth Defects Monitoring Program. Included women had residence at delivery inside NC and infants with gestational ages from 20 to 44 weeks (n = 304,906). Pesticide exposure was assigned using a previously constructed metric, estimating total chemical exposure (pounds of active ingredient) based on crops within 500 meters of maternal residence, specific dates of pregnancy, and chemical application dates based on the planting/harvesting dates of each crop. Logistic regression was used to estimate odds ratios (ORs) and 95% confidence intervals for four categories of exposure (<10th, 10–50th, 50–90th, and >90th percentiles) compared with unexposed. Models were adjusted for maternal race, age at delivery, education, marital status, and smoking status.ResultsWe observed elevated ORs for congenital heart defects and certain structural defects affecting the gastrointestinal, genitourinary and musculoskeletal systems (e.g., OR [95% confidence interval] [highest exposure vs. unexposed] for tracheal esophageal fistula/esophageal atresia = 1.98 [0.69, 5.66], and OR for atrial septal defects: 1.70 [1.34, 2.14]).ConclusionOur results provide some evidence of associations between residential exposure to agricultural pesticides and several birth defects phenotypes. Birth Defects Research (Part A) 106:240–249, 2016. © 2016 Wiley Periodicals, Inc.
Systematic procedure for the classification of proven and potential teratogens for use in research
Authors: Eltonsy Sherif , Martin Brigitte , Ferreira Ema , Blais Lucie 
Published: March 2016

BackgroundAlthough there is strong evidence that some medications are teratogenic, the current lists of teratogens to be used in research are outdated. The objective of this study was to develop an updatable and systematic procedure to the classification of medications proven and potentially teratogenic in the first trimester of pregnancy, for use in research.MethodsWe developed a two‐step procedure for teratogen classification. Step 1 includes classifying the medications from Drugs in Pregnancy and Lactation: a Reference Guide to Fetal and Neonatal Risk (9th ed.) into two provisional lists: (1) teratogenic medications, and (2) potentially teratogenic medications. We also searched other references to add other medications. In Step 2, the Teratology Information System (TERIS) database was searched, and the medication was classified as teratogenic or potentially teratogenic according to a newly developed scheme. Expert consensus was used if a medication was not recorded in TERIS.ResultsA total of 114 medications were identified in Drugs in Pregnancy and Lactation: a Reference Guide to Fetal and Neonatal Risk, with 57 medications in each provisional list. Seventy‐eight medications were identified in other sources. A total of 135 medications were included in Step 2; the TERIS scheme classified 23 medications, and 112 medications required expert opinion. The two experts agreed on 78.6% of the medications (kappa = 0.63). We identified 91 teratogenic and 81 potentially teratogenic medications.ConclusionUsing reliable references, we established a systematic procedure to the classification of medications with evidence of or potential teratogenic risk. These exhaustive lists will be useful in teratology research and related fields. Birth Defects Research (Part A) 106:285–297, 2016. © 2016 Wiley Periodicals, Inc.
Compound heterozygosity of a paternal submicroscopic deletion and a maternal missense mutation in POR gene: Antley‐bixler syndrome phenotype in three sibling fetuses
Authors: Tzetis Maria , Konstantinidou Anastasia , Sofocleous Christalena , Kosma Konstantina , Mitrakos Anastasios , Tzannatos Christina , Kitsiou‐Tzeli Sofia 
Published: March 2016

BackgroundAntley‐Bixler syndrome (ABS) is an exceptionally rare craniosynostosis syndrome that can be accompanied by disordered steroidogenesis, and is mainly caused by mutations in the POR gene, inherited in an autosomal recessive manner. Here we report the prenatal and postmortem findings of three sibling fetuses with ABS as a result of compound heterozygosity of a paternal submicroscopic deletion and a maternal missense mutation in the POR gene.MethodsPrenatal ultrasound and postmortem examination were performed in three sibling fetuses with termination of pregnancy at 22, 23, and 17 weeks of gestation, respectively. Molecular analysis of fetus 2 and 3 included (a) bidirectional sequencing of exon 8 of the POR gene after amplification of the specific locus by polymerase chain reaction, to detect single nucleotide variants (SNVs) and (b) high resolution comparative genomic hybridization (CGH) positive single nucleotide polymorphism array CGH (aCGH) analysis to detect copy number variants (CNVs), copy neutral areas of loss of heterozygosity and uniparental disomy.ResultsThe diagnosis of ABS was suggested by the postmortem examination findings. The combination of the POR gene molecular analysis and aCGH revealed a compound heterozygous genotype of a maternal SNV (p.A287P) and a paternal CNV (NC_000007.13:g.(?_75608488)_(75615534_?)del).ConclusionTo the best of our knowledge, these sibling fetuses add to the few reported cases of ABS, caused by a combination of a SNV and a CNV in the POR gene. The detailed description of the pathologic and radiographic findings of second trimester fetuses affected with ABS adds novel knowledge concerning the early ABS phenotype, in lack of previous relevant reports. Birth Defects Research (Part A) 106:536–541, 2016. © 2016 Wiley Periodicals, Inc.
Effect of Ga3+ and Gd3+ ions substitution on the structural and optical properties of Ce3+‐doped yttrium aluminium garnet phosphor nanopowders
Authors: Wako A. H. , Dejene F. B. , Swart H. C. 
Published: March 2016

AbstractThe structural and optical properties of commercially obtained Y3Al5O12:Ce3+ phosphor were investigated by replacing Al3+ with Ga3+ and Y3+ with Gd3+ in the Y3Al5O12:Ce3+ structure to form Y3(Al,Ga)5O12:Ce3+ and (Y,Gd)3Al5O12:Ce3+. X‐Ray diffraction (XRD) results showed slight 2‐theta peak shifts to lower angles when Ga3+ was used and to higher angles when Gd3+ was used, with respect to peaks from Y3Al5O12:Ce3+ and JCPDS card no. 73–1370. This could be attributed to induced crystal‐field effects due to the different ionic sizes of Ga3+ and Gd3+ compared with Al3+ and Y3+. The photoluminescence (PL) spectra showed broad excitation from 350 to 550 nm with a maximum at 472 nm, and broad emission bands from 500 to 650 nm, centred at 578 nm for Y3Al5O12:Ce3+ arising from the 5d → 4f transition of Ce3+. PL revealed a blue shift for Ga3+ substitution and a red shift for Gd3+ substitution. UV–Vis showed two absorption peaks at 357 and 457 nm for Y3Al5O12:Ce3+, with peaks shifting to 432 nm for Ga3+ and 460 nm for Gd3+ substitutions. Changes in the trap levels or in the depth and number of traps due to Ce3+ were analysed using thermoluminescence (TL) spectroscopy. This revealed the existence of shallow and deep traps. It was observed that Ga3+ substitution contributes to the shallowest traps at 74 °C and fewer deep traps at 163 °C, followed by Gd3+ with shallow traps at 87 °C and deep traps at 146 °C. Copyright © 2016 John Wiley & Sons, Ltd.
Conditional Release Placements of Insanity Acquittees in Oregon: 2012–2014
Authors: Novosad David , Banfe Shelley , Britton Juliet , Bloom Joseph D. 
Published: March 2016

AbstractBetween January 1, 2012 and December 31, 2014, there was a large population (N = 200) of insanity acquittees placed on conditional release (CR) in the state of Oregon. This article looks at the demographic and system characteristics of this large group of individuals. The authors then focus on the initial housing placement and what happens to individuals after their release in relation to their housing placement. In Oregon, insanity acquittees are either conditionally released directly by the court or placed in the hospital prior to potential CR by a supervising board. In general, once CR occurs, individuals tend to stay in their initial placement without moving to less structured levels of care, raising concerns about transinstitutionalization. This is especially true for individuals released to the most structured living arrangement (secure residential treatment facility). Those individuals who are conditionally released to less structured settings have a higher rate of revocation back to the hospital. Those individuals who do move to less structured levels of care usually have longer hospital stays and start off in more structured levels of care to start their CR. Copyright © 2016 John Wiley & Sons, Ltd.
Subcutaneous encapsulated fat necrosis
Authors: Aydin Dogu , Berg Jais O. 
Published: March 2016

Key Clinical MessageWe have described subcutaneous encapsulated fat necrosis, which is benign, usually asymptomatic and underreported. Images have only been published on two earlier occasions, in which the necrotic nodules appear “pearly” than the cloudy yellow surface in present case. The presented image may help future surgeons to establish the diagnosis peroperatively.
Current Status and Future Prospect of Polymer‐Layered Silicate Mixed‐Matrix Membranes for CO2/CH4 Separation
Authors: Jamil Asif , Ching Oh Pei , Shariff Azmi B. M. 
Published: March 2016

AbstractThe mixed‐matrix membrane (MMM), a state‐of‐the‐art polymer‐inorganic hybrid, is a relatively recent addition to the membrane family which adopts the synergistic advantages of the polymer and inorganic phase. Although marked improvement has been achieved by MMMs in CO2/CH4 separation, the development of a defect‐free structure to transcend the Robeson upper bound limit remains a challenge. In previous years, a number of inorganic materials with diverse nature have been studied for CO2/CH4 separation; however, layered silicates have not attracted much attention despite their superior thermal and mechanical properties. Analyses of the potential of using layered silicates as inorganic fillers in MMM fabrication for CO2/CH4 separation are reviewed. Additionally, the immediate challenges toward successful formation of layered silicate‐based MMM and future prospects are addressed.
Intervalence Charge Transfer Mediated by Silicon Nanoparticles
Authors: Peng Yi , Deming Christopher P. , Chen Shaowei 
Published: March 2016

AbstractStable silicon nanoparticles (SiNPs) were synthesized by using a wet chemical method with (3‐aminopropyl)triethoxysilane as the silicon source and ethynylferrocene as the capping ligands by taking advantage of the unique chemical reactivity of acetylene moieties with silicon hydride on the nanoparticle surface, forming Si−CH=CH− interfacial bonds under UV photoirradiation. Transmission electron microscopic measurements showed good dispersion of the nanoparticles with an average core diameter of 2.96±0.46 nm. From UV/Vis absorption measurements, the nanoparticle bandgap was estimated to be 2.6 eV. XPS measurements confirmed the successful attachment of ethynylferrocene ligands onto the nanoparticle surface, with a footprint consistent with that of ferrocene. Electrochemically, the nanoparticles exhibited only one pair of voltammetric waves in the dark, suggesting a lack of effective electronic communication between the particle‐bound ferrocenyl moieties, because of the low conductivity of the nanoparticle cores; whereas, under UV photoirradiation (365 nm), two pairs of voltammetric peaks were observed, with a potential spacing of 125 mV, suggesting that the nanoparticles behaved analogously to a Class II compound. This was ascribed to photo‐enhanced electronic conductivity of the nanoparticle cores that facilitated intervalence charge transfer of the particle‐bound ferrocene moieties.
Rhodium‐Catalyzed Synthesis of Chiral Spiro‐9‐silabifluorenes by Dehydrogenative Silylation: Mechanistic Insights into the Construction of Tetraorganosilicon Stereocenters
Authors: Murai Masahito , Takeuchi Yutaro , Yamauchi Kanae , Kuninobu Yoichiro , Takai Kazuhiko 
Published: March 2016

AbstractMechanistic insight into the construction of quaternary silicon chiral centers by rhodium‐catalyzed synthesis of spiro‐9‐silabifluorenes through dehydrogenative silylation is reported. The C2‐symmetric bisphosphine ligand, BINAP, was effective in controlling enantioselectivity, and axially chiral spiro‐9‐silabifluorenes were obtained in excellent yields with high enantiomeric excess. Monitoring of the reaction revealed the presence of a monohydrosilane intermediate as a mixture of two constitutional isomers. The reaction proceeded through two consecutive dehydrogenative silylations, and the absolute configuration was determined in the first silylative cyclization. Competitive reactions with electron‐rich and electron‐deficient dihydrosilanes indicated that the rate of silylative cyclization increased with decreasing electron density on the silicon atom of the starting dihydrosilane. Further investigation disclosed a rare interconversion between the two constitutional isomers of the monohydrosilane intermediate with retention of the absolute configuration.
ChemInform Abstract: Exploring the Color of 3D Transition‐Metal Ions in Trigonal Bipyramidal Coordination: Identification of Purple‐Blue (CoO5) and Beige‐Red (NiO5) Chromophores in LiMgBO3 Host.
Authors: Tamilarasan Subramani , Laha Sourav , Natarajan Srinivasan , Gopalakrishnan Jagannatha 
Published: March 2016

AbstractSubstitution of 3d transition metal ions for Mg in LiMgBO3 by the ceramic method leads to single phase materials LiMg1‐xCoxIIBO3 (0 < x ≤ 1.0), LiMg1‐xNixIIBO3 (0 < x≤ 0.1), LiMg1‐xCuxIIBO3 (0 < x ≤ 0.1), and LiMg1‐xFexIIIBO3 (0 < x ≤ 0.1).
ChemInform Abstract: Photocatalytic Degradation of Methylene Blue and Methyl Violet Using Cation Doped (Sn2+ and Ag+) Barium Tellurite Phosphate, Ba2TeO(PO4)2.
Authors: Reddy C. H. Sudhakar , Sreenu K. , Reddy J. R. , Ravi G. , Guje Ravinder , Malathi M. , Vithal M. 
Published: March 2016

AbstractBa2TeO(PO4)2 is prepared by solid state reaction of stoichiometric mixtures of Ba(NO3)2, TeO2, and NH4H2PO4 (650 °C, 48 h) followed by ion exchange with AgNO3 or SnCl2 solutions (20 °C, 24 h) to obtain Ag+ and Sn2+ doped Ba2TeO(PO4)2.
ChemInform Abstract: [Ge2]4‐ Dumbbells with Very Short Ge—Ge Distances in the Zintl Phase Li3NaGe2: A Solid‐State Equivalent to Molecular O2.
Authors: Scherf Lavinia M. , Karttunen Antti J. , Pecher Oliver , Magusin Pieter C. M. M. , Grey Clare P. , Faessler Thomas F. 
Published: March 2016

AbstractThe novel ternary Zintl phase Li3NaGe2 is prepared by heating a stoichiometric mixture of the elements (Ta ampoule in evacuated silica tubes, 400 °C, 7 d; cooling at a rate of 0.5 °C/min).
ChemInform Abstract: Bad‐Metal‐Layered Sulfide Oxide CsV2S2O.
Authors: Valldor Martin , Merz Patrick , Prots Yurii , Schnelle Walter 
Published: March 2016

AbstractPolycrystalline powder of the new title compound is prepared by solid state reaction of Cs2O1.3, VS, S, and V2O5 (corundum crucible, 700 °C, 40 h).
ChemInform Abstract: Rearrangement of {α‐P2W15} to {PW6} Moieties During the Assembly of Transition‐Metal‐Linked Polyoxometalate Clusters.
Authors: Martin‐Sabi Merce , Winter Ross Stuart , Lydon Claire , Cameron Jamie M. , Long De‐Liang , Cronin Leroy 
Published: March 2016

AbstractCompounds (IV) and (VI) contain {PW6} fragments generated from the [P2W15O56]12‐ precursor, which demonstrates the transformation of a Dawson lacunae into a Keggin lacunary building block.
ChemInform Abstract: Novel Phosphate Halides BaMnIII[PO4]FCl and BaMnIII[PO4]F2: Effects of Mixed Halides on Crystal Structures and Magnetic Properties.
Authors: Pei Da‐Ting , Sun Wei , Huang Ya‐Xi , Sun Zhi‐Mei , Pan Yuanming , Mi Jin‐Xiao 
Published: March 2016

Abstract(IV) is easily prepared over a wide range of conditions, whereas pure samples of (III) are obtained only using very low amounts of water, a narrow range of F:Cl ratios, and a long reaction time.
ChemInform Abstract: Structure and Bonding of an Intergrowth Phase Ca7Ag2+xGe7‐x (x ≈ 2/3) Featuring a Zintl‐Type Polyanionic Chain.
Authors: Ponou Simeon , Doverbratt Isa , Lidin Sven , Miller Gordon J. 
Published: March 2016

AbstractSingle crystals of the new title phase (x = 0.62, 0.48) are prepared by solid state reaction of the elements (Nb/Ta tubes, 980 °C for 2 h and 870 °C for 3—5 d).
ChemInform Abstract: Selectfluor Promoted NHC—Oxazoline Gold(I) Complex Catalyzed Cycloaddition/Oxidation Reaction of Enynones with Alkenes.
Authors: Xu Qin , Gu Peng , Wang Feijun , Shi Min 
Published: March 2016

AbstractA variety of axial chiral NHC‐oxazoline gold(I) complexes are synthesized and combined with Selectfluor in situ to catalyze the oxidative cycloaddition reaction of enynone and alkenes with air as green oxidant.
ChemInform Abstract: Synthesis of Indoles and Polycyclic Amides via Ruthenium(II)‐Catalyzed C—H Activation and Annulation.
Authors: Lin Hui , Li Shuai‐Shuai , Dong Lin 
Published: March 2016

AbstractCoupling of secondary benzamides (I) with various alkynes results in the formation of N‐acyl indole derivatives.
ChemInform Abstract: Ruthenium(II) Catalyzed Regiospecific C—H/O—H Annulations of Directing Arenes via Weak Coordination.
Authors: Banerjee Arghya , Santra Sourav Kumar , Mohanta Prakash Ranjan , Patel Bhisma K. 
Published: March 2016

AbstractAnnulation reactions of two different directing arenes with internal alkynes are found to be regioselective via the assistance of weaker carbonyl oxygen in the presence of a stronger nitrogen‐directing site.
ChemInform Abstract: Regioselective Ring Opening of Di‐isopropylsilylenes Derived from 1,3‐Diols with Alkyl Lithium Reagents.
Authors: Chando Katelyn M. , Bailey Patricia A. , Abramite Joseph A. , Sammakia Tarek 
Published: March 2016

AbstractThe method provides syn‐ or anti‐configured 1,3‐diols with the silane moiety residing at the sterically more demanding position, and depending on the trapping method of the alkoxy‐silane intermediate the products are either isolated as the alcohol or as the methyl ether derivatives.
ChemInform Abstract: Decatungstate Photocatalyzed Acylations and Alkylations in Flow via Hydrogen Atom Transfer.
Authors: Bonassi Filippo , Ravelli Davide , Protti Stefano , Fagnoni Maurizio 
Published: March 2016

AbstractThese photocatalyzed radical conjugate addition reactions are carried out in a meso‐scale flow photoreactor consisting in coils of UV‐transparent FEP tubing wrapped around a water‐cooled medium pressure mercury vapor lamp.
ChemInform Abstract: Sequential Deconjugative Electrophilic Fluorination/Cross‐Metathesis: Toward the Synthesis of Fluoro Analogues of Biologically Active Compounds.
Authors: Bedier Matthieu , Bouzbouz Samir 
Published: March 2016

AbstractA deconjugative electrophilic fluorodesilylation is accomplished for the first time by reacting γ‐silyl‐butenamides.
ChemInform Abstract: A Green, Homogeneous and Reusable Surfactant/Copper Based Ionic Liquid for the N‐Arylation of Indoles, Pyrazoles and Imidazoles.
Authors: Heidarizadeh Fariba , Majdi‐nasab Afrooz 
Published: March 2016

AbstractA simple, one‐pot synthesis of N‐arylindoles, N‐arylpyrazoles and N‐arylimidazoles using a reusable surfactant type copper based ionic liquid and base is reported.
ChemInform Abstract: Rapid, Regioconvergent, Solvent‐Free Alkene Hydrosilylation with a Cobalt Catalyst.
Authors: Chen Chi , Hecht Maxwell B. , Kavara Aydin , Brennessel William W. , Mercado Brandon Q. , Weix Daniel J. , Holland Patrick L. 
Published: March 2016

AbstractThe utility of β‐diketiminate cobalt(I)‐arene complexes as catalyst for the hydrosilylation of terminal alkenes with phenylsilane and triethoxysilane is demonstrated.