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Template* Synthesize

Marcel Rey, Taotao Yu, Roman Guenther, Karina Bley, Nicolas Vogel
Colloidal monolayers are important tools to fabricate surface structures at the nanoscale. A typical monolayer fabrication strategy involves the self-assembly of colloidal building blocks at liquid interfaces, which are subsequently deposited on a solid substrate. Even though this process is well established, the resulting order of the particles within the colloidal monolayer differs between batches of colloidal particles and can even change with the age of the dispersion. In this manuscript, we investigate the origins of this variation of monolayer quality for polystyrene particles synthesized by surfactant-free emulsion polymerization...
December 13, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
Shawn P Quigley, Robert K Ross, Sean Field, Alissa A Conway
Baer, Wolf, and Risley (1968) indicated "technological" was one of seven core dimensions of applied behavior analysis (ABA). They described this dimension as being met if interventions were described well enough to be implemented correctly. Often in the applied settings, a behavior plan is the method by which interventions are communicated to staff and parents for implementation. The necessary components of a behavior plan have been discussed in relation to compliance with regulations (e.g., Vollmer, Iwata, Zarcone, & Rodgers, Research in Developmental Disabilities 13:429-441, 1992), in school settings (e...
December 31, 2018: Behavior Analysis in Practice
Mebrahtu Melake Mezgebe, Anqi Ju, Gang Wei, Daniel K Machariya, Shanyi Guang, Hongyao Xu
The nano-sized copper sulfides (CuS) with different morphologies were prepared by hydrothermal method without any surfactant or template. The morphology and structure of CuS were characterized by powder X-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectra (XPS), field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), Brunauer-Emmett-Teller (BET) and ultraviolet-visible (UV-vis) absorption spectroscopy. FESEM results show that four morphologies of CuS (flower-like nanospheres, cross-linked nanodisks, cross-linked nanoplates and nanosheets) were prepared simply by changing the hydrothermal solvent...
December 10, 2018: Nanotechnology
Yoko Sakata, Ryoichi Yamamoto, Daiki Saito, Yuko Tamura, Keisuke Maruyama, Tomoki Ogoshi, Shigehisa Akine
A triptycene-based shape-persistent belt-shaped macrocycle, metallonanobelt, was synthesized by the self-assembly of 2,3,6,7-tetraaminotriptycene L and square planar Pd2+ . The pentamer was selectively formed by the complexation of L with Pd2+ in the presence of the pillar[6]arene derivative P6 having triethylene glycol pendant as a template, whereas a mixture of a trimer, tetramer, and pentamer was obtained in the absence of the template. The pentamer was successfully isolated based on the solubility difference between the metallonanobelt and the template...
December 5, 2018: Inorganic Chemistry
Mingjie Wang, Fu Liu, Yao Chen, Jianmin Gao
The biomorphic Silicon Carbide (BioSiC) ceramic with highly interconnected porous three-dimensional (3D) structure was fabricated by utilizing balsa wood cellulose nanofibers aerogel as the biotemplate and polycarbosilane (PCS) as the preceramic precursor. Evolution of morphology, composition, and pore properties from untreated wood to porous BioSiC was investigated systemically. The shrinkage and weight gain during pyrolysis was discussed. It was found that the structure of as-synthesized BioSiC was related to the microstructure of wood aerogel template and the concentration of PCS precursor...
November 30, 2018: Materials
Hongli Guo, Tapas Sen, Jinlong Zhang, Lingzhi Wang
Hierarchical macro-mesoporous anatase TiO2 single crystal is one-pot synthesized in an EtOH-H2 O system using polystyrene (PS) as the single porogen both for macropore and mesopore and TiF4 as the titanium precursor. The key to the simultaneous growth of single crystal and the introduction of hierarchical pores is the assembly of PS and titania at the glassification temperature of PS (100 °C). During the hydrolytic polymerization of TiF4 , PS is encapsulated inside titania and gradually glassified. The interference from elastic PS on the oriental growth of TiO2 crystallite is thus minimized and the final removal of PS through calcination leaves interconnected macropore and mesopore inside the single crystal...
November 19, 2018: Journal of Colloid and Interface Science
Yue Yu, Xu Li, Rajamani Krishna, Yuchuan Liu, Yuanzheng Cui, Jianfeng Du, Zhiqiang Liang, Xiaowei Song, Jihong Yu
Mg, Co-substituted aluminophosphate zeolites with ERI framework topology (denoted as MgAPO-ERI and CoAPO-ERI) have been synthesized under hydrothermal conditions by using N, N, N', N'-tetramethyl-1,6-hexanediamine as organic template. Their CO2 adsorption properties are investigated in comparison to those of the pure aluminophosphate counterpart AlPO-ERI. CoAPO-ERI shows the highest CO2 uptake of 57.3 cm3 g-1 (273 K and 1 bar) and the highest isosteric heat of 39.0 kJ mol-1 among the three samples. Importantly, the incorporation of Mg2+ and Co2+ ions in the framework of AlPO-ERI can greatly improve the adsorption selectivities of CO2 over CH4 and N2 ...
December 4, 2018: ACS Applied Materials & Interfaces
Daping Qiu, Ang Gao, Zhenyu Xie, Lun Zheng, Cuihua Kang, Yan Li, Nannan Guo, Min Li, Feng Wang, Ru Yang
It is a highly expected avenue to construct dual-carbon sodium-ion hybrid capacitors (SIHCs) using hierarchical porous carbon with interconnected pores, high accessible surface area and disordered carbon frameworks for ameliorating the sluggish kinetics of SIHCs. In this work, a novel dual-carbon SIHCs system with homologous enhanced kinetics hierarchical porous hollow carbon spheres (HPCS) and hierarchical porous hollow carbon bowls (HPCB) as the anode and cathode is constructed for the first time. In a Na half-cell configuration, the HPCS anode synthesized through a facile one-pot in-situ template route demonstrates a superior reversible capacity as well as outstanding rate capability and cycleability, and the HPCB cathode fabricated by chemical activation of HPCS exhibits excellent capacitive behaviors...
December 4, 2018: ACS Applied Materials & Interfaces
Ruixuan Chen, Kun Rui, Xiaofei Yang, Aoming Huang, Yao Zhang, Huijuan Lin, Yan Yan, Jixin Zhu, Wei Huang
A quasi-Mxene architecture was synthesized by 1-ethyl-3-methylimidazolium dicyanamide-iron phthalocyanine via self-template pyrolysis. The unique quasi-Mxene structure results in a rich contact area and good electronic conductivity, showing excellent rate capacity and cycling stability for lithium storage.
December 4, 2018: Chemical Communications: Chem Comm
Seohyun Chris Kim, Derek K O'Flaherty, Lijun Zhou, Victor S Lelyveld, Jack W Szostak
The emergence of primordial RNA-based life would have required the abiotic synthesis of nucleotides, and their participation in nonenzymatic RNA replication. Although considerable progress has been made toward potentially prebiotic syntheses of the pyrimidine nucleotides (C and U) and their 2-thio variants, efficient routes to the canonical purine nucleotides (A and G) remain elusive. Reported syntheses are low yielding and generate a large number of undesired side products. Recently, a potentially prebiotic pathway to 8-oxo-adenosine and 8-oxo-inosine has been demonstrated, raising the question of the suitability of the 8-oxo-purines as substrates for prebiotic RNA replication...
December 3, 2018: Proceedings of the National Academy of Sciences of the United States of America
Minji Yang, Huichao He, Aizhen Liao, Ji Huang, Yi Tang, Jun Wang, Gaili Ke, Faqin Dong, Long Yang, Liang Bian, Yong Zhou
The crystal facet of the BiVO4 photoanode has potential influence on its charge-transfer and separation properties as well as water oxidation kinetics. In the present work, a BiVO4 polyhedral film with exposed {121}, {132}, {211}, and {251} high-index facets was synthesized by a facile Bi2 O3 template-induced method and investigated as a photoanode for water oxidation. In comparison with the normal BiVO4 film with a {121} monohigh-index facet, the BiVO4 film with multihigh-index crystal facets shows higher activity and faster kinetics for photoelectrochemical water oxidation...
December 3, 2018: Inorganic Chemistry
Bing Xiao, Xiaoxuan Zhou, Hongxia Xu, Bihan Wu, Ding Hu, Hongjie Hu, Kanyi Pu, Zhuxian Zhou, Xiangrui Liu, Jianbin Tang, Youqing Shen
Integration of biological macromolecules with inorganic materials via biomineralization has demonstrated great potential for development of nanotheranostic agents. To produce multifunctionality, integration of multiple components in the biomineralized theranostic agents is required; however, how to efficiently and reproducibly implement this is challenging. In this report, a universal biomineralization strategy is developed by incorporation of oxidization polymerization into albumin-templated biomineralization for facile synthesis of nanotheranostic agents...
December 3, 2018: ACS Nano
Xianghui Ruan, Cheng Zhang, Shichun Jiang, Tao Guo, Rongjiao Xia, Ying Chen, Xu Tang, Wei Xue
A series of myricetin derivatives containing amide, thioether, and 1,3,4-thiadiazole moieties were designed and synthesized, and their antiviral and antibacterial activities were assessed. The bioassays showed that all the title compounds exhibited potent in vitro antibacterial activities against Xanthomonas citri ( Xac ), Ralstonia solanacearum ( Rs ), and Xanthomonas oryzae pv. Oryzae ( Xoo ). In particular, the compounds 5a , 5f , 5g , 5h , 5i, and 5l , with EC50 values of 11.5⁻27.3 μg/mL, showed potent antibacterial activity against Xac that was better than the commercial bactericides Bismerthiazol (34...
November 29, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Laurent Peres, Deliang Yi, Susana Bustos-Rodriguez, Cécile Marcelot, Alexandre Pierrot, Pier-Francesco Fazzini, Ileana Florea, Raul Arenal, Lise-Marie Lacroix, Bénédicte Warot-Fonrose, Thomas Blon, Katerina Soulantica
Supported nanocrystals of original shapes are highly desirable for the development of optimized catalysts; however, conventional methods for the preparation of supported catalysts do not allow shape control. In this work, we have synthesized concave platinum nanocubes exposing {110} crystallographic facets at 20 °C. In the presence of a crystallographically oriented Pt(111) support in the reaction medium, the concave nanocubes grow epitaxially on the support, producing macroscopic nanostructured surfaces. Higher reaction temperature produces a mixture of different nanostructures in solution; however, only the nanostructures growing along the 111 direction are obtained on the Pt(111) support...
November 30, 2018: Nanoscale
Yingfang Zhang, Yan Xia, Saisai Yan, Jia Han, Yifan Chen, Wenzhong Zhai, Zhinong Gao
Controlling the structure, morphology, and composition of noble metals is of great significance to improve the catalytic activity and stability of catalysts. Herein, we have successfully synthesized self-interconnecting Pt-Cu alloy nanowire networks (NWNs) with controllable compositions via the co-reduction of the metal precursors potassium chloroplatinate (K2PtCl6) and CuCl2 with sodium borohydride (NaBH4). Owing to the hydrogen bubbles formed by NaBH4 hydrolysis and oxidation as a dynamic template, the facile strategy was carried out without any organic solvent, capping agent, polymer, or special experimental device, ensuring that the surfaces of NWNs were definitely "clean"...
November 30, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
Balasubramanian Chandramouli, Sara Del Galdo, Giordano Mancini, Vincenzo Barone
BACKGROUND: The mechanism of how the hydrophilic threefold channel (C3) of ferritin nanocages facilitates diffusion of diverse metal ions into the internal cavity remains poorly explored. METHODS: Computational modeling and free energy estimations were carried out on R. catesbeiana H´ ferritin. Transit features and associated energetics for Fe2+ , Mg2+ , Zn2+ ions through the C3 channel have been examined. RESULTS: We highlight that iron conduction requires the involvement of two Fe2+ ions in the channel...
November 26, 2018: Biochimica et biophysica acta. General subjects
Sarah J Donkers, Katherine Chan, Stephan Milosavljevic, Maureen Pakosh, Kristin E Musselman
Initiatives to increase physical activity (PA) are most effective when combined with behavior change strategies (BCS). However, this is not routinely done and perhaps can be attributed to health care professionals' (HCP) lack of confidence and understanding of how to best apply BCS. This review aimed to identify and synthesize the existing literature describing methods used to train HCP to deliver BCS for PA promotion for individuals living with neurological conditions. This review followed the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines...
November 29, 2018: Translational Behavioral Medicine
Norihiro Suzuki, Akihiro Okazaki, Haruo Kuriyama, Izumi Serizawa, Aiga Hara, Yuiri Hirano, Yukihiro Nakabayashi, Nitish Roy, Chiaki Terashima, Kazuya Nakata, Ken-Ichi Katsumata, Takeshi Kondo, Makoto Yuasa, Akira Fujishima
There is a need for highly efficient photocatalysts, particularly for water purification. In this study, we fabricated a mesoporous TiO₂ thin film on a boron-doped diamond (BDD) layer by a surfactant-assisted sol-gel method, in which self-assembled amphiphilic surfactant micelles were used as an organic template. Scanning electron microscopy revealed uniform mesopores, approximately 20 nm in diameter, that were hexagonally packed in the TiO₂ thin film. Wide-angle X-ray diffraction and Raman spectroscopy clarified that the framework crystallized in the anatase phase...
November 27, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Dan Dai, Qian Ma, Yanyan Pei, Zhong Zheng, Liangjie Yuan
Nanoparticle-built MgO hollow microspheres were synthesized through a template-free hydrothermal route using citrate as a structural director. Zn was introduced into MgO to improve the surface charge. Pure MgO and Zn-doped MgO samples were characterized by X-ray diffraction (XRD), energy-dispersive X-ray spectrometry (EDX), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and a zeta-potential analyzer. The as-prepared microspheres showed outstanding performance for the removal of Congo red (CR, anionic dye) from solutions...
November 28, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
Tara MacCulloch, Alex Buchberger, Nicholas Stephanopoulos
Peptide-oligonucleotide conjugates (POCs) are covalent constructs that link a molecule like DNA to a synthetic peptide sequences. These materials merge the programmable self-assembly of oligonucleotides with the bioactivity and chemical diversity of polypeptides. Recent years have seen the widespread use of POCs in a range of fields, driven the by relative advantages of each molecular type. In this review, we will present an overview of the synthesis and application of POCs, with an emphasis on emerging areas where these molecules will have a unique impact...
November 28, 2018: Organic & Biomolecular Chemistry
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