ACS Combinatorial Science最新文献_第7页

Combinatorial Synthesis of Oxysulfides in the Lanthanum–Bismuth-Copper System 镧-铋-铜体系中氧化硫化物的组合合成

IF 3.784 3区化学

ACS Combinatorial Science Pub Date : 2020-04-30 DOI: 10.1021/acscombsci.0c00015

Mitsutaro Umehara, Lan Zhou, Joel A. Haber, Dan Guevarra, Kevin Kan, Paul F. Newhouse, John M. Gregoire*

{"title":"Combinatorial Synthesis of Oxysulfides in the Lanthanum–Bismuth-Copper System","authors":"Mitsutaro Umehara, Lan Zhou, Joel A. Haber, Dan Guevarra, Kevin Kan, Paul F. Newhouse, John M. Gregoire*","doi":"10.1021/acscombsci.0c00015","DOIUrl":"https://doi.org/10.1021/acscombsci.0c00015","url":null,"abstract":"Establishing synthesis methods for a target material constitutes?a grand challenge in materials research, which is compounded with use-inspired specifications on the format of the material. Solar photochemistry using thin film materials is a promising technology for which many complex materials are being proposed, and the present work describes application of combinatorial methods to explore the synthesis of predicted La–Bi–Cu oxysulfide photocathodes, in particular alloys of LaCuOS and BiCuOS. The variation in concentration of three cations and two anions in thin film materials, and crystallization thereof, is achieved by a combination of reactive sputtering and thermal processes including reactive annealing and rapid thermal processing. Composition and structural characterization establish composition-processing-structure relationships that highlight the breadth of processing conditions required for synthesis of LaCuOS and BiCuOS. The relative irreducibility of La oxides and limited diffusion indicate the need for high temperature processing, which conflicts with the temperature limits for mitigating evaporation of Bi and S. Collectively the results indicate that alloys of these phases will require reactive annealing protocols that are uniquely tailored to each composition, motivating advancement of dynamic processing capabilities to further automate discovery of synthesis routes.","PeriodicalId":14,"journal":{"name":"ACS Combinatorial Science","volume":null,"pages":null},"PeriodicalIF":3.784,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1021/acscombsci.0c00015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"98723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Update to Our Reader, Reviewer, and Author Communities—April 2020 更新我们的读者、审稿人和作者社区- 2020年4月

IF 3.784 3区化学

ACS Combinatorial Science Pub Date : 2020-04-22 DOI: 10.1021/acscombsci.0c00061

Cynthia J. Burrows, Shu Wang, Hyun Jae Kim, Gerald J. Meyer, Kirk Schanze, T. Randall Lee, Jodie L. Lutkenhaus, David Kaplan, Christopher Jones, Carolyn Bertozzi, Laura Kiessling, Mary Beth Mulcahy, Craig W. Lindsley, M. G. Finn, Joel D. Blum, Prashant Kamat, Courtney C. Aldrich, Stuart Rowan, Bin Liu, Dennis Liotta, Paul S. Weiss, Deqing Zhang, Krishna N. Ganesh, Patrick Sexton, Harry A. Atwater, J. Justin Gooding, David T. Allen, Christopher A. Voigt, Jonathan Sweedler, Alanna Schepartz, Vincent Rotello, Sébastien Lecommandoux, Shana J. Sturla, Sharon Hammes-Schiffer, Jillian Buriak, Jonathan W. Steed, Hongwei Wu, Julie Zimmerman, Bryan Brooks, Phillip Savage, William Tolman, Thomas F. Hofmann, Joan F. Brennecke, Thomas A. Holme, Kenneth M. Merz Jr., Gustavo Scuseria, William Jorgensen, Gunda I. Georg, Shaomeng Wang, Philip Proteau, John R. Yates III, Peter Stang, Gilbert C. Walker, Marc Hillmyer, Lynne S. Taylor, Teri W. Odom, Erick Carreira, Kai Rossen, Paul Chirik, Scott J. Miller, Anne McCoy, Joan-Emma Shea, Martin Zanni, Catherine Murphy, Gregory Scholes, Joseph A. Loo

引用次数: 0

Experimental and Theoretical Investigation on Phase Formation and Mechanical Properties in Cr–Co–Ni Alloys Processed Using a Novel Thin-Film Quenching Technique 新型薄膜淬火技术对Cr-Co-Ni合金相形成及力学性能的实验与理论研究

IF 3.784 3区化学

ACS Combinatorial Science Pub Date : 2020-04-14 DOI: 10.1021/acscombsci.9b00170

Dennis Naujoks, Mike Schneider, Steffen Salomon, Janine Pfetzing-Micklich, Aparna Puchakayala Appaiah Subramanyam, Thomas Hammerschmidt, Ralf Drautz, Jan Frenzel, Aleksander Kostka, Gunther Eggeler, Guillaume Laplanche, Alfred Ludwig*

{"title":"Experimental and Theoretical Investigation on Phase Formation and Mechanical Properties in Cr–Co–Ni Alloys Processed Using a Novel Thin-Film Quenching Technique","authors":"Dennis Naujoks, Mike Schneider, Steffen Salomon, Janine Pfetzing-Micklich, Aparna Puchakayala Appaiah Subramanyam, Thomas Hammerschmidt, Ralf Drautz, Jan Frenzel, Aleksander Kostka, Gunther Eggeler, Guillaume Laplanche, Alfred Ludwig*","doi":"10.1021/acscombsci.9b00170","DOIUrl":"https://doi.org/10.1021/acscombsci.9b00170","url":null,"abstract":"The Cr–Co–Ni system was studied by combining experimental and computational methods to investigate phase stability and mechanical properties. Thin-film materials libraries were prepared and quenched from high temperatures up to 700 °C using a novel quenching technique. It could be shown that a wide A1 solid solution region exists in the Cr–Co–Ni system. To validate the results obtained using thin-film materials libraries, bulk samples of selected compositions were prepared by arc melting, and the experimental data were additionally compared to results from DFT calculations. The computational results are in good agreement with the measured lattice parameters and elastic moduli. The lattice parameters increase with the addition of Co and Cr, with a more pronounced effect for the latter. The addition of ～20 atom % Cr results in a similar hardening effect to that of the addition of ～40 atom % Co.","PeriodicalId":14,"journal":{"name":"ACS Combinatorial Science","volume":null,"pages":null},"PeriodicalIF":3.784,"publicationDate":"2020-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1021/acscombsci.9b00170","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"8206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Optimized Multimetal Sensitized Phosphor for Enhanced Red Up-Conversion Luminescence by Machine Learning 利用机器学习优化多金属敏化荧光粉增强红色上转换发光

IF 3.784 3区化学

ACS Combinatorial Science Pub Date : 2020-04-14 DOI: 10.1021/acscombsci.0c00035

Fan Yang, Yanxing Wang, Xue Jiang, Bi Lin, Ruichan Lv*

{"title":"Optimized Multimetal Sensitized Phosphor for Enhanced Red Up-Conversion Luminescence by Machine Learning","authors":"Fan Yang, Yanxing Wang, Xue Jiang, Bi Lin, Ruichan Lv*","doi":"10.1021/acscombsci.0c00035","DOIUrl":"https://doi.org/10.1021/acscombsci.0c00035","url":null,"abstract":"In this research, machine learning including the genetic algorithm (GA) and support vector machine (SVM) algorithm is used to solve the “low up-conversion luminescence (UCL) intensity” problem in order to find the optimal phosphor with enhanced red UCL emission using multielement K/Li/Mn metal modulation. Compared with the first generation of phosphors, the best phosphors’ fluorescence intensity occurs in the third generation optimized by the GA, with a stronger brightness (4.91-fold), a higher relative quantum yield (6.40-fold), and an enhanced tissue penetration depth (by 5 mm). The single and multiple dopants effect on the upconversion intensity of K+Li+Mn sensitizers is also studied: the intensity increases first and then decreases with the increase of Yb/Er/K+Li+Mn content, and the optimized K+Li+Mn concentration is 6.03%. In order to confirm the stability of the brightness optimization by the GA, a batch of phosphors was synthesized with the same element proportion, and the similarity of fluorescence intensity of two batches of phosphors was evaluated by the SVM algorithm with the classification accuracy index. Finally, the optimized phosphor was used for bioimaging and phosphor-LED.","PeriodicalId":14,"journal":{"name":"ACS Combinatorial Science","volume":null,"pages":null},"PeriodicalIF":3.784,"publicationDate":"2020-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1021/acscombsci.0c00035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"8208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Immobilized Carbodiimide Assisted Flow Combinatorial Protocol to Facilitate Amide Coupling and Lactamization 固定化碳二亚胺辅助流动组合方案促进酰胺偶联和内酰胺化

IF 3.784 3区化学

ACS Combinatorial Science Pub Date : 2020-04-13 DOI: 10.1021/acscombsci.0c00001

Christian Dankers, Joseph Tadros, David G. Harman, Janice R. Aldrich-Wright, Thanh V. Nguyen, Christopher P. Gordon*

引用次数: 4

Magnetic Bead-Immobilized Mammalian Cells Are Effective Targets to Enrich Ligand-Displaying Yeast 磁珠固定化哺乳动物细胞是富集配体展示酵母的有效靶标

IF 3.784 3区化学

ACS Combinatorial Science Pub Date : 2020-04-13 DOI: 10.1021/acscombsci.0c00036

Patrick S. Lown, Benjamin J. Hackel*

{"title":"Magnetic Bead-Immobilized Mammalian Cells Are Effective Targets to Enrich Ligand-Displaying Yeast","authors":"Patrick S. Lown, Benjamin J. Hackel*","doi":"10.1021/acscombsci.0c00036","DOIUrl":"https://doi.org/10.1021/acscombsci.0c00036","url":null,"abstract":"Yeast surface display empowers selection of protein binding ligands, typically using recombinant soluble antigens. However, ectodomain fragments of transmembrane targets may fail to recapitulate their true, membrane-bound form. Direct selections against adhered mammalian cells empower enrichment of genuine binders yet benefit from high target expression, robustly adherent mammalian cells, and nanomolar affinity ligands. This study evaluates a modified format with mammalian cells immobilized to magnetic beads; yeast-displayed fibronectin domain and affibody ligands of known affinities and cells with expression ranges of epidermal growth factor receptor (EGFR) and CD276 elucidate important parameters to ligand enrichment and yield in cell suspension panning with comparison to adherent panning. Cell suspension panning is hindered by significant background of nondisplaying yeast but exhibits yield advantages in model EGFR systems for a high affinity (KD = 2 nM) binder on cells with both high (106 per cell) target expression (9.6 ± 0.6% vs 3.2 ± 0.4%, p < 0.0001) and mid (105) target expression (2.3 ± 0.5% vs 0.41 ± 0.09%, p = 0.0008), as well as for a low affinity (KD > 600 nM) binder on high target expression cells (2.0 ± 0.5% vs 0.017 ± 0.005%; p = 0.001). Significant enrichment was observed for all EGFR systems except the low-affinity, high expression system. The CD276 system failed to provide significant enrichment, indicating that this technique may not be suitable for all targets. Collectively, this study highlights new approaches that yield successful enrichment of yeast-displayed ligands via panning on immobilized mammalian cells.","PeriodicalId":14,"journal":{"name":"ACS Combinatorial Science","volume":null,"pages":null},"PeriodicalIF":3.784,"publicationDate":"2020-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1021/acscombsci.0c00036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Ce(OTf)3-Catalyzed Multicomponent Reaction of Alkynyl Carboxylic Acids, tert-Butyl Isocyanide, and Azides for the Assembly of Triazole–Oxazole Derivatives Ce(OTf)3催化炔基羧酸、异氰酸叔丁基和叠氮化物的多组分反应组装三唑-恶唑衍生物

IF 3.784 3区化学

ACS Combinatorial Science Pub Date : 2020-04-10 DOI: 10.1021/acscombsci.0c00012

Ming Cao, Yi-Lin Fang, Ying-Chun Wang*, Xiao-Juan Xu, Zhi-Wei Xi, Shi Tang*

引用次数: 14

In Vitro Identification of the Hamiltonian Cycle Using a Circular Structure Assisted DNA Computer 利用环状结构辅助DNA计算机体外鉴定哈密顿循环

IF 3.784 3区化学

ACS Combinatorial Science Pub Date : 2020-03-26 DOI: 10.1021/acscombsci.9b00150

Deepak Sharma, Manojkumar Ramteke*

引用次数: 0

In Vitro Construction of Large-scale DNA Libraries from Fragments Containing Random Regions using Deoxyinosine-containing Oligonucleotides and Endonuclease V 利用含脱氧肌苷寡核苷酸和核酸内切酶V从含有随机区域的片段体外构建大规模DNA文库

IF 3.784 3区化学

ACS Combinatorial Science Pub Date : 2020-03-26 DOI: 10.1021/acscombsci.9b00167

Yasuhide Yamamoto, Takuya Terai, Shigefumi Kumachi, Naoto Nemoto*

{"title":"In Vitro Construction of Large-scale DNA Libraries from Fragments Containing Random Regions using Deoxyinosine-containing Oligonucleotides and Endonuclease V","authors":"Yasuhide Yamamoto, Takuya Terai, Shigefumi Kumachi, Naoto Nemoto*","doi":"10.1021/acscombsci.9b00167","DOIUrl":"https://doi.org/10.1021/acscombsci.9b00167","url":null,"abstract":"Efficient and precise construction of DNA libraries is a fundamental starting point for directed evolution of polypeptides. Recently, several in vitro selection methods have been reported that do not rely on cells for protein expression, where peptide libraries in the order of 1013 species are used for in vitro affinity selection. To maximize their potential, simple yet versatile construction of DNA libraries from several fragments containing random regions without bacterial transformation is essential. To address this issue, we herein propose a novel DNA construction methodology based on the use of polymerase chain reaction (PCR) primers containing a single deoxyinosine (I) residue near their 5′ end. Treatment of the PCR products with endonuclease V generates 3′ overhangs with customized lengths and sequences, which can be ligated accurately and efficiently with other fragments having exactly complementary overhangs. As a proof of concept, we constructed an artificial gene library of single-domain antibodies from four DNA fragments.","PeriodicalId":14,"journal":{"name":"ACS Combinatorial Science","volume":null,"pages":null},"PeriodicalIF":3.784,"publicationDate":"2020-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1021/acscombsci.9b00167","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"962221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Development of Mischmetal–Fe–Co–B Permanent Magnet Alloys via High-Throughput Methods 高通量法制备稀土- fe - co - b永磁合金

IF 3.784 3区化学

ACS Combinatorial Science Pub Date : 2020-03-24 DOI: 10.1021/acscombsci.9b00190

Rakesh P. Chaudhary*, Kinjal H. Gandha, Fanqiang Meng, Emrah Simsek, Ikenna C. Nlebedim, Orlando Rios, Matthew J. Kramer, Ryan T. Ott

{"title":"Development of Mischmetal–Fe–Co–B Permanent Magnet Alloys via High-Throughput Methods","authors":"Rakesh P. Chaudhary*, Kinjal H. Gandha, Fanqiang Meng, Emrah Simsek, Ikenna C. Nlebedim, Orlando Rios, Matthew J. Kramer, Ryan T. Ott","doi":"10.1021/acscombsci.9b00190","DOIUrl":"https://doi.org/10.1021/acscombsci.9b00190","url":null,"abstract":"Additive manufacturing synthesis using laser engineered net shaping (LENS) is utilized to rapidly print libraries of mischmetal (MM = La, Ce, Nd, and Pr) containing R2TM14B alloys (R = MM + separated Nd and TM = Fe and Co) enabling robust evaluation of physical properties over a wide composition range. High-throughput characterization of the magnetic and thermal properties are used to identify compositions for potential high-temperature, high-performance permanent magnets with reduced critical rare-earth elements. Improved Curie temperature (Tc ～ 450 °C) is obtained with substitution of Fe by Co in pseudoternary R2TM14B alloys. Furthermore, a 4-fold decrease in the Nd content can be achieved through substitution with less critical Ce- and La-rich MM, while retaining high Tc. Guided by the properties of the LENS printed samples, selected compositions with and without TiC additions are synthesized via melt-spinning techniques to produce nanostructured ribbons. The maximum room temperature coercivity (Hc) and energy product ((BH)max) without TiC are found to be 5.8 kOe, 8.5 MGOe, respectively, while TiC additions as a grain refiner gave Hc and (BH)max of 4.9 kOe, 9.8 MGOe, respectively. Structural characterization of the melt-spun ribbons shows homogeneous grain refinement with TiC additions, which leads to an increase in the energy product.","PeriodicalId":14,"journal":{"name":"ACS Combinatorial Science","volume":null,"pages":null},"PeriodicalIF":3.784,"publicationDate":"2020-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1021/acscombsci.9b00190","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"956029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4