bluuebunny/crossref_metadata_2025_split huggingface dataset:
Laser‐Printed Organic Thin‐Film Transistors
Authors: Diemer Peter J. , Harper Angela F. , Niazi Muhammad R. , Petty Anthony J. , Anthony John E. , Amassian Aram , Jurchescu Oana D. 
Published: September 2017

AbstractSolution deposition of organic optoelectronic materials enables fast roll‐to‐roll manufacturing of photonic and electronic devices on any type of substrate and at low cost. But controlling the film microstructure when it crystallizes from solution can be challenging. This represents a major limitation of this technology, since the microstructure, in turn, governs the charge transport properties of the material. Further, the solvents typically used are hazardous, which precludes their incorporation in large‐scale manufacturing processes. Here, the first ever organic thin‐film transistor fabricated with an electrophotographic laser printing process using a standard office laser printer is reported. This completely solvent‐free additive manufacturing method allows for simultaneous deposition, purification, and patterning of the organic semiconductor layer. Laser‐printed transistors using triisopropylsilylethynyl pentacene as the semiconductor layer are realized on flexible substrates and characterized, making this a successful first demonstration of the potential of laser printing of organic semiconductors.
Treatment of hepatitis C virus infection with direct‐acting antiviral drugs is safe and effective in patients with hemoglobinopathies
Authors: Origa Raffaella , Ponti Maria Laura , Filosa Aldo , Galeota Lanza Alfonso , Piga Antonio , Saracco Giorgio Maria , Pinto Valeria , Picciotto Antonino , Rigano Paolo , Madonia Salvatore , Rosso Rosamaria , D'Ascola Domenico , Cappellini Maria Domenica , D'Ambrosio Roberta , Tartaglione Immacolata , De Franceschi Lucia , Gianesin Barbara , Di Marco Vito , Forni Gian Luca ,   Italy for THAlassemia and hepatitis C Advance ‐ Società Italiana Talassemie ed Emoglobinopatie (ITHACA‐SITE)
Published: September 2017

AbstractProgression of liver fibrosis in patients with hemoglobinopathies is strongly related to the severity of iron overload and the presence of chronic hepatitis C virus (HCV) infection. Effective iron chelation therapy and HCV infection eradication may prevent liver complications. The European Association for the Study of the Liver guidelines recommend interferon‐free regimens for the treatment of HCV infection in patients with hemoglobinopathies. However, data regarding the use of direct‐acting antiviral drugs (DAAs) in this patient population are few. This observational study evaluated the safety and efficacy of therapy with DAAs in an Italian cohort of patients with hemoglobinopathies, chronic HCV infection and advanced liver fibrosis. Between March 2015 and December 2016, 139 patients received DAAs and completed 12 weeks of follow up after the end of treatment for the evaluation of sustained virological response (12SVR). The 12SVR (93.5%) was comparable with that typically observed in cirrhotic patients without hemoglobinopathies. Three patients died during the period of observation of causes unrelated to DAAs. One patient did not achieve a virological response and five (3.6%) relapsed during 12 weeks of follow‐up after the end of therapy. In addition, patients showed significant reductions in serum ferritin at 12 weeks to levels similar to those observed in a control group of 39 patients with thalassemia major without HCV infection, who adhered to chelation therapy and had no overt iron overload. In conclusion, the use of DAAs appears to be safe and effective in patients with hemoglobinopathies and advanced liver disease due to HCV.
Alkinylierung von C(O)‐H‐Bindungen durch Photoredox‐vermittelten Wasserstoffatomtransfer
Authors: Mukherjee Satobhisha , Garza‐Sanchez R. Aleyda , Tlahuext‐Aca Adrian , Glorius Frank 
Published: September 2017

AbstractDie Entwicklung neuer Wasserstoffatomtransfer(HAT)‐Strategien im Kontext der Photoredoxkatalyse stellt eine hochattraktive Möglichkeit zur gezielten Aktivierung einer C‐H‐Bindung eines Substrats mit anschließender selektiver Funktionalisierung dar. Wir beschreiben hier das erste Photoredox‐vermittelte Wasserstoffatomtransfer‐Protokoll zur hoch regio‐ und chemoselektiven Synthese von Inonen, Inamiden und Inestern, erreicht durch direkte Funktionalisierung von C
(O)‐H‐Bindungen. Die weitreichenden Anwendungsmöglichkeiten dieser Methode wurden im Rahmen der selektiven Funktionalisierung von C(O)‐H‐Bindungen in hochkomplexen Molekülgerüsten verdeutlicht.
High Thermoelectric Performance of New Rhombohedral Phase of GeSe stabilized through Alloying with AgSbSe2
Authors: Huang Zhiwei , Miller Samuel A. , Ge Binghui , Yan Mingtao , Anand Shashwat , Wu Tianmin , Nan Pengfei , Zhu Yuanhu , Zhuang Wei , Snyder G. Jeffrey , Jiang Peng , Bao Xinhe 
Published: September 2017

AbstractGeSe is a IV–VI semiconductor, like the excellent thermoelectric materials PbTe and SnSe. Orthorhombic GeSe has been predicted theoretically to have good thermoelectric performance but is difficult to dope experimentally. Like PbTe, rhombohedral GeTe has a multivalley band structure, which is ideal for thermoelectrics and also promotes the formation of Ge vacancies to provide enough carriers for electrical transport. Herein, we investigate the thermoelectric properties of GeSe alloyed with AgSbSe2, which stabilizes a new rhombohedral structure with higher symmetry that leads to a multivalley Fermi surface and a dramatic increase in carrier concentration. The zT of GeAg0.2Sb0.2Se1.4 reaches 0.86 at 710 K, which is 18 times higher than that of pristine GeSe and over four times higher than doped orthorhombic GeSe. Our results open a new avenue towards developing novel thermoelectric materials through crystal phase engineering using a strategy of entropy stabilization of high‐symmetry alloys.
Morphology‐Dependent Cell Imaging by Using a Self‐Assembled Diacetylene Peptide Amphiphile
Authors: Jiang Hao , Hu Xiao‐Yu , Schlesiger Stefanie , Li Mao , Zellermann Eilo , Knauer Shirley K. , Schmuck Carsten 
Published: September 2017

AbstractHerein, a novel cationic peptide gemini amphiphile containing diacetylene motifs (DA2P) is presented, which self‐assembles into novel tadpole‐ and bola‐shaped nanostructures at low concentrations and nanofibers at higher concentrations. Interestingly, the DA2P assemblies can be polymerized into a fluorescent red phase but only during incubation with HeLa cells, most likely owing to the reorganization of the diacetylene chains of DA2P upon interaction with the cell membrane. The red‐fluorescent polymerized DA2P assemblies can serve as a novel cell imaging probe. However, only vesicles, tadpole‐ and bola‐shaped DA2P assemblies can be translocated into HeLa cells, whereas the nanofiber‐like DA2P assemblies are trapped by the cell membranes and do not enter the cells. Hence, morphology‐dependent cell imaging is observed.
Rapid Assembly of Diversely Functionalized Spiroindenes by a Three‐Component Palladium‐Catalyzed C−H Amination/Phenol Dearomatization Domino Reaction
Authors: Fan Liangxin , Liu Jingjing , Bai Lu , Wang Yaoyu , Luan Xinjun 
Published: September 2017

AbstractA novel palladium‐catalyzed three‐component reaction of phenol‐derived biaryls with N‐benzoyloxyamines and norbornadiene (NBD) has been developed for the assembly of highly functionalized spiroindenes. This domino process was realized through NBD‐assisted C−H amination and phenol dearomatization by forming one C−N bond and two C−C bonds in a single step. Preliminary studies indicated that asymmetric control of this transformation was feasible with chiral ligands. Moreover, the potential synthetic utility of this methodology was highlighted by a series of further transformations.
One‐Pot, Three‐Component Sulfonimidamide Synthesis Exploiting the Sulfinylamine Reagent N‐Sulfinyltritylamine, TrNSO
Authors: Davies Thomas Q. , Hall Adrian , Willis Michael C. 
Published: September 2017

AbstractSulfonimidamides are increasingly important molecules in medicinal chemistry and agrochemistry, but their preparation requires lengthy synthetic sequences, which has likely limited their use. We describe a one‐pot de novo synthesis of sulfonimidamides from widely available organometallic reagents and amines. This convenient and efficient process uses a stable sulfinylamine reagent, N‐sulfinyltritylamine (TrNSO), available in one step on 10 gram scale, as a linchpin. In contrast to classical approaches starting from thiols or their derivatives, our TrNSO‐based approach facilitates the rapid assembly of the three reaction components into a variety of differentially substituted sulfonimidamides containing medicinally relevant moieties, including pyridines and indoles. Analogues of the sulfonamide‐containing COX‐2 inhibitor Celecoxib were prepared and evaluated.
Time‐Resolved In Situ MAS NMR Monitoring of the Nucleation and Growth of Zeolite BEA Catalysts under Hydrothermal Conditions
Authors: Ivanova Irina I. , Kolyagin Yury G. , Kasyanov Ivan A. , Yakimov Alexander V. , Bok Tatiana O. , Zarubin Dmitry N. 
Published: September 2017

AbstractTime‐resolved 13C, 23Na, 27Al, and 29Si MAS NMR has been applied in situ for monitoring the hydrothermal synthesis of zeolite BEA. Isotopic labelling with 29Si and 13C isotopes has been used to follow the fate of siliceous species and structure directing agent ((13CH3−CH2)4NOH). Two mechanistic pathways, namely solution‐mediated and solid–solid hydrogel rearrangement have been distinguished for two synthesis procedures studied. The mechanisms of structure‐directing behavior of TEA+ cations in two reaction pathways have been elucidated. The results show that multinuclear MAS NMR can serve as a superior tool for monitoring hydrothermal synthesis of various solids including zeolites, zeotypes, mesoporous materials, metal–organic frameworks and so on and for the design of novel outstanding materials for different applications.
(4+3) Cycloaddition Reactions of N‐Alkyl Oxidopyridinium Ions
Authors: Fu Chencheng , Lora Nestor , Kirchhoefer Patrick L. , Lee Dong Reyoul , Altenhofer Erich , Barnes Charles L. , Hungerford Natasha L. , Krenske Elizabeth H. , Harmata Michael 
Published: September 2017

AbstractN‐Methylation of methyl 5‐hydroxynicotinate followed by reaction with a diene in the presence of triethylamine afforded (4+3) cycloadducts in good to excellent yields. High regioselectivity was observed with 1‐substituted and 1,2‐disubstituted butadienes. Density functional theory calculations indicate that the cycloaddition involves concerted addition of the diene onto the oxidopyridinium ion. The process provides rapid access to bicyclic nitrogenous structures resembling natural alkaloids.
Radical Heterocyclization and Heterocyclization Cascades Triggered by Electron Transfer to Amide‐Type Carbonyl Compounds
Authors: Huang Huan‐Ming , Procter David J. 
Published: September 2017

AbstractRadical heterocyclizations triggered by electron transfer to amide‐type carbonyls, using SmI2‐H2O, provide straightforward access to bicyclic heterocyclic scaffolds containing bridgehead nitrogen centers. Furthermore, the first radical heterocyclization cascade triggered by reduction of amide‐type carbonyls delivers novel, complex tetracyclic architectures containing five contiguous stereocenters with excellent diastereocontrol.
Synthesis and characterization of antibacterial chromium iron oxide nanoparticle‐loaded activated carbon for ultrasound‐assisted wastewater treatment
Authors: Bazrafshan Ali Akbar , Hajati Shaaker , Ghaedi Mehrorang , Asfaram Arash 
Published: September 2017

The aim of this study was to evaluate the surface adsorption capacity of CrFeO3 nanoparticle‐loaded activated carbon (CrFeO3‐NPs–AC) for the removal of a cationic dye (methyl violet, MV). CrFeO3‐NPs were hydrothermally synthesized and loaded on AC followed by characterization using X‐ray diffraction, field‐emission scanning electron microscopy and energy‐dispersive and Fourier transform infrared spectroscopies. The CrFeO3‐NPs were tested for in vitro antibacterial activities against Gram‐positive (Staphylococcus aureus) and Gram‐negative (Pseudomonas aeruginosa) bacteria. Minimum inhibitory and minimum bactericidal concentrations of CrFeO3‐NPs–AC were obtained to be 50 and 100 μg ml−1, respectively, against S. aureus and 25 and 50 μg ml−1 against P. aeruginosa. These results indicated the antibacterial properties of CrFeO3‐NPs–AC. To investigate the adsorption process, several systematic experiments were designed by varying parameters such as adsorbent mass, pH, initial MV concentration and sonication time. The adsorption process was modelled and the optimal conditions were determined to be 0.013 g, 7.4, 15 mg l−1 and 8 min for adsorbent mass, pH, MV concentration and sonication time, respectively. The real experimental data were found to be efficiently explained by response surface methodology and genetic algorithm model. Kinetic studies for MV adsorption showed rapid sorption dynamics described by a second‐order kinetic model, suggesting a chemisorption mechanism. Then, the experimental equilibrium data obtained at various concentrations of MV and adsorbent masses were fitted to conventional Langmuir, Freundlich, Temkin and Dubinin–Radushkevich isotherm models. Dye adsorption equilibrium data were fitted well to the Langmuir isotherm. From the Langmuir model, the maximum monolayer capacity was calculated to be 65.67 mg g−1 at optimum adsorbent mass.
A new procedure for determination of nickel in some fake jewelry and cosmetics samples after dispersive liquid–liquid microextraction by FAAS
Authors: Saçmacı Şerife , Saçmacı Mustafa 
Published: September 2017

A new, simple and cheap dispersive liquid–liquid microextraction (DLLME) procedure was optimized for the preconcentration of trace amounts of Ni(II) as a prior step to its determination by flame atomic absorption spectrometry (FAAS). It is based on the microextraction of nickel, where appropriate amounts of the extraction solvent (CHCl3), disperser solvent (ethanol) and chelating agent, name 5‐[(Z)‐isoxazol‐3‐yl‐diazenyl]‐2‐methyl‐quinolin‐8‐ol (MMD), were firstly synthesized/characterized and used. Various parameters that affect the extraction procedure such as pH, centrifugation rate and time, the chelating agent (MMD) concentration and sampling volume on the recovery of Ni(II) were investigated. The preconcentration of a 20 ml sample solution was thus enhanced by a factor of 80. The resulting calibration graph was linear in the range of 0.24–10 mg L−1 with a correlation coefficient of 0.9998. The limit of detection (3 s/b) obtained under optimal conditions was 1.00 μg L−1. The relative standard deviation for certified reference material determinations was 1.2%. The accuracy of the method was verified by the determination of Ni(II) in the certified reference material of wastewater (Waste water CWW TMD). The proposed procedure was successfully applied to the determination of Ni(II) in some fake jewelry and cosmetics samples.
Sustainable rubbers and rubber additives
Authors: Sarkar Preetom , Bhowmick Anil K. 
Published: September 2017

ABSTRACTRubber is one of the most versatile materials having myriad of applications—from niche rubber band and eraser to highly engineered spacecraft seal. Of late, the glittering concept of “sustainability” has been able to infiltrate within the domain of elastomer science and technology to a significant extent ‐ in both academia and industry. This fervent context thus necessitates a systematic documentation of brief history, present research scenario and future perspective of sustainable developments in this field. The present review aims to portray a panoramic sketch of various sustainable rubbers and functional rubber additives in this field and intends to provide a direction to their plausible future developments. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2018,135, 45701.
Phase transition identification of cellulose nanocrystal suspensions derived from various raw materials
Authors: Zhang Yuanyuan , Cheng Qiaoyun , Chang Chunyu , Zhang Lina 
Published: September 2017

ABSTRACTCellulose nanocrystals (CNCs) as attractive nanomaterials are widely distributed in higher plants, algae, and marine animals. Herein, three kinds of CNCs were isolated by sulfuric acid hydrolysis from cotton pulp, algae, and tunicate cotton, respectively. Their morphologies and size were characterized by scanning electron microscope and atomic force microscope. The results showed that the aspect ratio of CNCs was in the order of CNCs from cotton pulp (CCNCs) (15 ± 10) < CNCs (ACNCs) from algae (ACNCs) (18 ± 12) < CNCs from tunicate (TCNCs) (75 ± 60). The phase transitions of CNC suspensions were also determined by phase diagram and rheological experiments. Two critical concentrations from isotropic to biphasic phase (Ci) and from biphasic to anisotropic phase (Ca) were measured and calculated, indicating that CNCs with higher aspect ratio reached Ci and Ca at lower concentration. Furthermore, the critical concentrations were also checked by polarized optical microscopy measurement. This work provided important information for construction of CNCs reinforced nanocomposites and investigation of CNCs chiral nematic liquid crystals. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45702.
Cure characteristics, mechanical, thermal, and coloring properties of natural rubber/dye‐loaded shell powder composites
Authors: Zhou Youzhou , Ge Liuqin , Fan Neng , Dai Lingqing , Xia Meisheng 
Published: September 2017

ABSTRACTTo explore the application of shell powder (SP) in rubber, a dye‐loaded SP (DSP) bio‐filler based on SP and Congo red was incorporated into natural rubber (NR). The adsorption experiments demonstrated that the maximum monolayer adsorption capacity of Congo red onto SP was 69.3 mg/g. The effect of aluminate coupling agent and DSP was investigated by evaluating the cure characteristics, mechanical, thermal, and coloring properties of NR/DSP composites. It was suggested that the optimum amount of aluminate coupling agent was 2 wt %, and the best tensile strength (24.80 MPa) of vulcanizates was achieved at the DSP content of 20 phr, while other mechanical properties such as tear strength kept increasing with the addition of DSP. Furthermore, the improved thermal stability and uniform color distribution of the NR composites was obtained. The results indicate that DSP is promising to become a low‐cost filler and pigment for rubber materials. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45750.
Effect of annealing‐induced interfacial demixing on crystallization of PEO confined in coaxial electrospun nanofibers
Authors: Zou Shu‐Fen , Guo Xiao‐Shuai , Wang Rui‐Yang , Fan Bin , Xu Jun‐Ting , Fan Zhi‐Qiang 
Published: September 2017

ABSTRACTGlassy polymer nanofibers with spatially confined poly(ethylene oxide) (PEO) were fabricated by coaxial electrospinning of PEO with polyacrylonitrile (PAN) or polystyrene. The effect of melt‐annealing on the crystallization behavior of the confined PEOs was studied using differential scanning calorimetry. It is found that the crystallization behavior of the confined PEOs varies with annealing temperature (Ta), annealing time (ta), and molecular weight of PEO. Notably, it is observed that the crystallization temperature (Tc) and melting temperature (Tm) of PEO increase with prolongation of ta, for PEO600K/PAN and PEO2K/PAN coaxial electrospun fibers. This phenomenon can be interpreted by the annealing‐induced demixing at the core‐sheath interface. After the coaxial electrospinning, the core and sheath of the PEO/PAN coaxial fibers are partially compatible due to the miscible solvents used for the core and sheath polymers. Upon annealing, demixing occurs at the core‐sheath interface, leading to improved crystallizability of PEO. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45760.
Association of Trauma and Posttraumatic Stress Disorder With Incident Systemic Lupus Erythematosus in a Longitudinal Cohort of Women
Authors: Roberts Andrea L. , Malspeis Susan , Kubzansky Laura D. , Feldman Candace H. , Chang Shun‐Chiao , Koenen Karestan C. , Costenbader Karen H. 
Published: September 2017

ObjectiveTo conduct the first longitudinal study examining whether trauma exposure and posttraumatic stress disorder (PTSD) are associated with increased risk of incident systemic lupus erythematosus (SLE) in a civilian cohort.MethodsWe examined the association of trauma exposure and PTSD symptoms with SLE incidence over 24 years of follow‐up in a US longitudinal cohort of women (n = 54,763). Incident SLE in women meeting ≥4 American College of Rheumatology criteria was ascertained by self‐report and confirmed by medical record review. PTSD and trauma exposure were assessed with the Short Screening Scale for Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition PTSD and the Brief Trauma Questionnaire, respectively. Women were categorized as having no trauma, trauma and no PTSD symptoms, subclinical PTSD (1–3 symptoms), or probable PTSD (4–7 symptoms). We examined whether longitudinally assessed health risk factors (e.g., smoking, body mass index [BMI], oral contraceptive use) accounted for increased SLE risk among women with trauma exposure and PTSD versus those without.ResultsDuring follow‐up, 73 cases of SLE occurred. Compared to women with no trauma, probable PTSD was associated with increased SLE risk (for 4–7 symptoms, hazard ratio [HR] 2.94 [95% confidence interval {95% CI} 1.19–7.26], P < 0.05). Subclinical PTSD was associated with increased SLE risk, although this did not reach statistical significance (for 1–3 symptoms, HR 1.83 [95% CI 0.74–4.56], P = 0.19). Smoking, BMI, and oral contraceptive use slightly attenuated the associations (e.g., for 4–7 symptoms, adjusted HR 2.62 [95% CI 1.09–6.48], P < 0.05). Trauma exposure, regardless of PTSD symptoms, was strongly associated with incident SLE (HR 2.83 [95% CI 1.29–6.21], P < 0.01).ConclusionThis study contributes to growing evidence that psychosocial trauma and associated stress responses may lead to autoimmune disease.
The Role of Anticipated Regret in Advice Taking
Authors: Tzini Konstantina , Jain Kriti 
Published: September 2017

AbstractAcross five studies, we demonstrate that anticipated future regret influences receptiveness to advice. While making a revision to one's own judgment based on advice, people can anticipate two kinds of future regret: (a) the regret of following non‐beneficial advice and (b) the regret of ignoring beneficial advice. In studies 1a (scenario task) and 1b (judgment task), we find that anticipated regret from erring after following advice is greater than anticipated regret from erring after ignoring advice. Furthermore, receptiveness decreases as the difference between anticipated regret from following and from ignoring advice increases. In study 2, we demonstrate that perceived justifiability of one's own initial decision is greater than that of advice. This difference in perceived justifiability influences anticipated regret and that, in turn, influences receptiveness. In study 3, we investigate the effect of advisor's expertise on perceived justifiability, anticipated regret, and receptiveness. In study 4, we propose and test an intervention to improve receptiveness based on self‐generation of advice justifications. Participants who were asked to self‐generate justifications for the advice were more receptive to it. This effect was mediated by perceived justifiability and anticipated regret. These findings shed further light on what prevents people from being receptive to advice and how this can be improved. Copyright © 2017 John Wiley & Sons, Ltd.