Enzymatic Halogenation and Dehalogenation Reactions: Pervasive and Mechanistically DiverseChem. Rev. ( IF 37.369 ) 2017-01-20
Vinayak Agarwal, Zachary D. Miles, Jaclyn M. Winter, Alessandra S. Eustáquio, Abrahim A. El Gamal, Bradley S. Moore
Alkali Metal-Hydroxide-Catalyzed C(sp)–H Bond silylationJ. Am. Chem. Soc. ( IF 13.038 ) 2017-01-20
Anton A. Toutov, Kerry N. Betz, David P. Schuman, Wen-Bo Liu, Alexey Fedorov, Brian M. Stoltz, Robert H. Grubbs
Local and Global Dynamics in Klebsiella pneumoniae Outer Membrane Protein a in Lipid Bilayers Probed at Atomic ResolutionJ. Am. Chem. Soc. ( IF 13.038 ) 2017-01-20
Olivier Saurel, Iordan Iordanov, Guillaume Nars, Pascal Demange, Tanguy Le Marchand, Loren B. Andreas, Guido Pintacuda, Alain Milon
Assembling Enzymatic Cascade Pathways inside Virus-Based Nanocages Using Dual-Tasking Nucleic Acid TagsJ. Am. Chem. Soc. ( IF 13.038 ) 2017-01-20
Melanie Brasch, Rindia M. Putri, Mark V. de Ruiter, Daniel Luque, Melissa. S. T. Koay, José R. Castón, Jeroen J. L. M. Cornelissen
Transparent Window Vibrational Probes for the Characterization of Proteins With High Structural and Temporal ResolutionChem. Rev. ( IF 37.369 ) 2017-01-20
Ramkrishna Adhikary, Jörg Zimmermann, Floyd E. Romesberg
Fast-Initiating, Ruthenium-based Catalysts for Improved Activity in Highly E-Selective Cross MetathesisJ. Am. Chem. Soc. ( IF 13.038 ) 2017-01-20
Tonia S. Ahmed, Robert H. Grubbs
Why Are Vinyl Cations Sluggish Electrophiles?J. Am. Chem. Soc. ( IF 13.038 ) 2017-01-20
Peter A. Byrne, Shinjiro Kobayashi, Ernst-Ulrich Würthwein, Johannes Ammer, Herbert Mayr
Pore Space Partition in Metal–Organic FrameworksAcc. Chem. Res. ( IF 22.003 ) 2017-01-20
Quan-Guo Zhai, Xianhui Bu, Xiang Zhao, Dong-Sheng Li, Pingyun Feng
Fluorescence Turn-On Sensing of DNA Duplex Formation by a Tricyclic Cytidine AnalogueJ. Am. Chem. Soc. ( IF 13.038 ) 2017-01-20
Dillon D. Burns, Kristine L. Teppang, Raymond W. Lee, Melissa E. Lokensgard, Byron W. Purse
Micrometer-Scale Ion Current Rectification at Polyelectrolyte Brush-Modified MicropipetsJ. Am. Chem. Soc. ( IF 13.038 ) 2017-01-20
Xiulan He, Kailin Zhang, Ting Li, Yanan Jiang, Ping Yu, Lanqun Mao
Plasmonic Imaging of Surface Electrochemical Reactions of Single Gold NanowiresJ. Am. Chem. Soc. ( IF 13.038 ) 2017-01-20
Yixian Wang, Xiaonan Shan, Hui Wang, Shaopeng Wang, Nongjian Tao
Mechanistic Studies of Single-Step Styrene Production Using a Rhodium(I) CatalystJ. Am. Chem. Soc. ( IF 13.038 ) 2017-01-20
Benjamin A. Vaughan, Sarah K. Khani, J. Brannon Gary, James D. Kammert, Michael S. Webster-Gardiner, Bradley A. McKeown, Robert J. Davis, Thomas R. Cundari, T. Brent Gunnoe
Generation and Trapping of Nitrosocarbonyl IntermediatesChem. Rev. ( IF 37.369 ) 2017-01-20
Misal Giuseppe Memeo, Paolo Quadrelli
Conformational Effects of UV Light on DNA OrigamiJ. Am. Chem. Soc. ( IF 13.038 ) 2017-01-20
Haorong Chen, Ruixin Li, Shiming Li, Joakim Andréasson, Jong Hyun Choi
Chiral NH-Controlled Supramolecular MetallacyclesJ. Am. Chem. Soc. ( IF 13.038 ) 2017-01-20
Jinqiao Dong, Chunxia Tan, Kang Zhang, Yan Liu, Paul J. Low, Jianwen Jiang, Yong Cui
Urea Anions: Simple, Fast, and Selective Catalysts for Ring-Opening PolymerizationsJ. Am. Chem. Soc. ( IF 13.038 ) 2017-01-20
Binhong Lin, Robert M. Waymouth
Native State Volume Fluctuations in Proteins as a Mechanism for Dynamic AllosteryJ. Am. Chem. Soc. ( IF 13.038 ) 2017-01-20
Anthony B. Law, Paul J. Sapienza, Jun Zhang, Xiaobing Zuo, Chad M. Petit
Spotlights on our sister journals: Angew. Chem. Int. Ed. 6/2017Angew. Chem. Int. Ed. ( IF 11.709 ) 2017-01-20
Frontispiece: A Biosurfactant-Inspired Heptapeptide with Improved Specificity to Kill MRSAAngew. Chem. Int. Ed. ( IF 11.709 ) 2017-01-20
Yuan Liu, Shuangyang Ding, Richard Dietrich, Erwin Märtlbauer, Kui Zhu
A PDE6δ-KRas Inhibitor Chemotype with up to Seven H-Bonds and Picomolar Affinity that Prevents Efficient Inhibitor Release by Arl2Angew. Chem. Int. Ed. ( IF 11.709 ) 2017-01-20
Pablo Martín-Gago, Eyad K. Fansa, Christian H. Klein, Sandip Murarka, Petra Janning, Marc Schürmann, Malte Metz , Shehab Ismail, Carsten Schultz-Fademrecht, Matthias Baumann, Philippe I. H. Bastiaens, Alfred Wittinghofer, Herbert Waldmann
Palladium-Catalyzed Ring-Forming Aminoalkenylation of Alkenes with Aldehydes Initiated by Intramolecular AminopalladationAngew. Chem. Int. Ed. ( IF 11.709 ) 2017-01-20
Yue Hu, Yinjun Xie, Zhiqiang Shen, Hanmin Huang
Ruthenium(II)-Catalyzed meta C−H Mono- and Difluoromethylations by Phosphine/Carboxylate CooperationAngew. Chem. Int. Ed. ( IF 11.709 ) 2017-01-20
Zhixiong Ruan, Shou-Kun Zhang, Cuiju Zhu, Paul Niklas Ruth, Dietmar Stalke, Lutz Ackermann
Thermally Adjustable Dynamic Disulfide Linkages Mediated by Highly Air-Stable 2,2,6,6-Tetramethylpiperidine-1-sulfanyl (TEMPS) RadicalsAngew. Chem. Int. Ed. ( IF 11.709 ) 2017-01-20
Akira Takahashi, Raita Goseki, Hideyuki Otsuka
Controllable Remote C−H Bond Functionalization by Visible-Light PhotocatalysisAngew. Chem. Int. Ed. ( IF 11.709 ) 2017-01-20
Xiao-Qiang Hu, Jia-Rong Chen, Wen-Jing Xiao
Peptide N-Amination Supports β-Sheet ConformationsAngew. Chem. Int. Ed. ( IF 11.709 ) 2017-01-20
Matthew P. Sarnowski, Chang Won Kang, Yassin M. Elbatrawi, Lukasz Wojtas, Juan R. Del Valle
Discrimination between Conglomerates and Pseudoracemates Using Surface Coverage Plots in 2D Self-Assemblies at the Liquid–Graphite InterfaceAngew. Chem. Int. Ed. ( IF 11.709 ) 2017-01-20
Naoki Maeda, Takashi Hirose, Kenji Matsuda
Reversing the Regioselectivity of Halofunctionalization Reactions through Cooperative Photoredox and Copper CatalysisAngew. Chem. Int. Ed. ( IF 11.709 ) 2017-01-20
Jeremy D. Griffin, Cortney L. Cavanaugh, David A. Nicewicz
Polymer-Templated Formation of Polydopamine-Coated SnO2 Nanocrystals: Anodes for Cyclable Lithium-Ion BatteriesAngew. Chem. Int. Ed. ( IF 11.709 ) 2017-01-20
Beibei Jiang, Yanjie He, Bo Li, Shiqiang Zhao, Shun Wang, Yan-Bing He, Zhiqun Lin
Orthogonal Surface Tags for Whole-Cell BiocatalysisAngew. Chem. Int. Ed. ( IF 11.709 ) 2017-01-20
Theo Peschke, Kersten S. Rabe, Christof M. Niemeyer
Micromotors Spontaneously Neutralize Gastric Acid for pH-Responsive Payload ReleaseAngew. Chem. Int. Ed. ( IF 11.709 ) 2017-01-20
Jinxing Li, Pavimol Angsantikul, Wenjuan Liu, Berta Esteban-Fernández de Ávila, Soracha Thamphiwatana, Mingli Xu, Elodie Sandraz, Xiaolei Wang, Jorge Delezuk, Weiwei Gao, Liangfang Zhang, Joseph Wang
Engineering for Life Sciences: A Fruitful Collaboration Enabled by ChemistryAngew. Chem. Int. Ed. ( IF 11.709 ) 2017-01-20
Christof M. Niemeyer
Model-free extraction of spin label position distributions from pseudocontact shift dataChem. Sci. ( IF 9.144 ) 2017-01-20
Elizaveta Suturina, Daniel Haussinger, Kaspar Zimmermann, Luca Garbuio, Maxim Yulikov, Gunnar Jeschke, Ilya Kuprov
A significant problem with paramagnetic tags attached to proteins and nucleic acids is their conformational mobility. Each tag is statistically distributed within a volume between 5 and 10 Angstroms across;...
Long wavelength excitable near-infrared fluorescent nanoparticles with aggregation-induced emission characteristics for image-guided tumor resectionChem. Sci. ( IF 9.144 ) 2017-01-20
Jie Liu, Chao Chen, Shenglu Ji, Qian Liu, Dan Ding, Dan Zhao, Bin Liu
Near infrared (NIR) fluorescence imaging (700-900 nm) is a promising technology in preclinical and clinical tumor diagnosis and therapy. The availability of excellent NIR fluorescent contrast agents is still the...
Template-directed synthesis of linear porphyrin oligomers: classical, Vernier and mutual VernierChem. Sci. ( IF 9.144 ) 2017-01-20
Nuntaporn Kamonsutthipaijit, Harry Laurence Anderson
Three different types of template-directed syntheses of linear porphyrin oligomers are presented. In the classical approach the product has the same number of binding sites as the template, whereas in...
Macroporous materials: microfluidic fabrication, functionalization and applicationsChem. Soc. Rev. ( IF 34.090 ) 2017-01-20
Bingjie Wang, Pepijn Prinsen, Huizhi Wang, Zhishan Bai, Hualin Wang, Rafael Luque, Jin Xuan
Multi-step continuous-flow synthesisChem. Soc. Rev. ( IF 34.090 ) 2017-01-20
Joshua Britton, Colin L. Raston
Organocatalyzed aerobic oxidative Robinson-type annulation of 2-isocyanochalcones: expedient synthesis of phenanthridinesChem. Commun. ( IF 6.567 ) 2017-01-20
Zhongyan Hu, Jinhuan Dong, Yang Men, Yifei Li, Xianxiu Xu
Metal 'Turn-off', Anion 'Turn-On' Gelation Cascade in Pyridinylmethyl UreasChem. Commun. ( IF 6.567 ) 2017-01-20
Caroline Offiler, Christopher David Jones, Jonathan W Steed
Pyridinylmethyl ureas form strong gels in aromatic solvents. The gels are weakened or destroyed by addition of transition metals but gelation is recovered by adding bromide anion giving rise to...
[V4Mo3O14(NAr)3([small mu ]2-NAr)3]2- : the First Polyarylimido-Stabilized Molybdovanadate ClusterChem. Commun. ( IF 6.567 ) 2017-01-20
Yichao Huang, Jiangwei Zhang, Jingxuan Ge, Chong Sui, Jian Hao, Yongge Wei
The first molybdovanadate cluster with a polyarylimido trimetal fragment, [V4Mo3O14(NAr)3([small mu ]2-NAr)3]2-, was in-situ synthesized by using (TBA)3[H3V10O28] as proton and vanadium sources. Additional aniline hydrocholides will give rise to the formation...
From 2-methylimidazole to 1,2,3-triazole: A topological transformation of ZIF-8 and ZIF-67 by post-synthetic modificationChem. Commun. ( IF 6.567 ) 2017-01-20
Mustafa Erkartal, Ufuk Erkilic, Benjamin Tam, Hakan Usta, Ozgur Yazaydin, J T Hupp, Omar Farha, Unal Sen
Bridging ligand replacement in zeolitic imidazolate frameworks, ZIF-8 and ZIF-67, by 1,2,3-triazole was investigated. A complete substitution of 2-methylimidazole by 1,2,3-triazole resulted in a topological transformation of the parent framework...
Reversible covalent interactions of [small beta]-aminoboronic acids with carbohydrate derivativesChem. Commun. ( IF 6.567 ) 2017-01-20
Graham E. Garrett, Diego B. Diaz, Andrei K. Yudin, Mark S. Taylor
N-N bond formation in Ugi Processes: from nitric acid to libraries of NitraminesChem. Commun. ( IF 6.567 ) 2017-01-20
Laurent El Kaim, laurence Grimaud, Gian Cesare Tron, Marie Cordier, Valentina Mercalli, Aude Nyadanu
The Ugi reaction has drawn considerable attention over the years leading to numerous libraries of heterocycles and various extensions changing the nature of the components of the coupling. We wish...
Programmable DNA Triple-Helix Molecular Switch in Biosensing: From Homogenous Solution to Living CellsChem. Commun. ( IF 6.567 ) 2017-01-20
Pinting Tang, Jing Zheng, Jianru Tang, Dandan Ma, Wei J. Xu, Jishan Li, Zhong Cao, Rong-Hua Yang
Herein, we demonstrated a new gold nanoparticles (AuNPs)-integrated programmable triple-helix molecular switch (THMS) to realize biosensing of multiple targets from homogenous solution to living cells. The results demonstrated that this...
[Working Life] The transcontinental scientistScience ( IF 34.661 ) 2017-01-20
Author: Wim Delva
[New Products] New ProductsScience ( IF 34.661 ) 2017-01-20
A weekly roundup of information on newly offered instrumentation, apparatus, and laboratory materials of potential interest to researchers.
[Association Affairs] AAAS 2017 Annual Meeting ProgramScience ( IF 34.661 ) 2017-01-20
Annual Meeting. The theme of the AAAS Annual Meeting in Boston, 16 to 20
This issue of Science includes the program of the 2017 AAAS
[Report] Mechanistic basis for a molecular triage reactionScience ( IF 34.661 ) 2017-01-20
Sichen Shao, Monica C. Rodrigo-Brenni, Maryann H. Kivlen, Ramanujan S. Hegde
Newly synthesized proteins are triaged between biosynthesis and degradation to maintain cellular homeostasis, but the decision-making mechanisms are unclear. We reconstituted the core reactions for membrane targeting and ubiquitination of nascent tail-anchored membrane proteins to understand how their fate is determined. The central six-component triage system is divided into an uncommitted client-SGTA complex, a self-sufficient targeting module, and an embedded but self-sufficient quality control module. Client-SGTA engagement of the targeting module induces rapid, private, and committed client transfer to TRC40 for successful biosynthesis. Commitment to ubiquitination is dictated primarily by comparatively slower client dissociation from SGTA and nonprivate capture by the BAG6 subunit of the quality control module. Our results provide a paradigm for how priority and time are encoded within a multichaperone triage system.
[Report] Protein structure determination using metagenome sequence dataScience ( IF 34.661 ) 2017-01-20
Sergey Ovchinnikov, Hahnbeom Park, Neha Varghese, Po-Ssu Huang, Georgios A. Pavlopoulos, David E. Kim, Hetunandan Kamisetty, Nikos C. Kyrpides, David Baker
Despite decades of work by structural biologists, there are still ~5200 protein families with unknown structure outside the range of comparative modeling. We show that Rosetta structure prediction guided by residue-residue contacts inferred from evolutionary information can accurately model proteins that belong to large families and that metagenome sequence data more than triple the number of protein families with sufficient sequences for accurate modeling. We then integrate metagenome data, contact-based structure matching, and Rosetta structure calculations to generate models for 614 protein families with currently unknown structures; 206 are membrane proteins and 137 have folds not represented in the Protein Data Bank. This approach provides the representative models for large protein families originally envisioned as the goal of the Protein Structure Initiative at a fraction of the cost.
[Report] Evolutionary drivers of thermoadaptation in enzyme catalysisScience ( IF 34.661 ) 2017-01-20
Vy Nguyen, Christopher Wilson, Marc Hoemberger, John B. Stiller, Roman V. Agafonov, Steffen Kutter, Justin English, Douglas L. Theobald, Dorothee Kern
With early life likely to have existed in a hot environment, enzymes had to cope with an inherent drop in catalytic speed caused by lowered temperature. Here we characterize the molecular mechanisms underlying thermoadaptation of enzyme catalysis in adenylate kinase using ancestral sequence reconstruction spanning 3 billion years of evolution. We show that evolution solved the enzyme’s key kinetic obstacle—how to maintain catalytic speed on a cooler Earth—by exploiting transition-state heat capacity. Tracing the evolution of enzyme activity and stability from the hot-start toward modern hyperthermophilic, mesophilic, and psychrophilic organisms illustrates active pressure versus passive drift in evolution on a molecular level, refutes the debated activity/stability trade-off, and suggests that the catalytic speed of adenylate kinase is an evolutionary driver for organismal fitness.
[Report] The receptor kinase FER is a RALF-regulated scaffold controlling plant immune signalingScience ( IF 34.661 ) 2017-01-20
Martin Stegmann, Jacqueline Monaghan, Elwira Smakowska-Luzan, Hanna Rovenich, Anita Lehner, Nicholas Holton, Youssef Belkhadir, Cyril Zipfel
In plants, perception of invading pathogens involves cell-surface immune receptor kinases. Here, we report that the Arabidopsis SITE-1 PROTEASE (S1P) cleaves endogenous RAPID ALKALINIZATION FACTOR (RALF) propeptides to inhibit plant immunity. This inhibition is mediated by the malectin-like receptor kinase FERONIA (FER), which otherwise facilitates the ligand-induced complex formation of the immune receptor kinases EF-TU RECEPTOR (EFR) and FLAGELLIN-SENSING 2 (FLS2) with their co-receptor BRASSINOSTEROID INSENSITIVE 1–ASSOCIATED KINASE 1 (BAK1) to initiate immune signaling. We show that FER acts as a RALF-regulated scaffold that modulates receptor kinase complex assembly. A similar scaffolding mechanism may underlie FER function in other signaling pathways.
[Report] A peptide hormone required for Casparian strip diffusion barrier formation in Arabidopsis rootsScience ( IF 34.661 ) 2017-01-20
Takuya Nakayama, Hidefumi Shinohara, Mina Tanaka, Koki Baba, Mari Ogawa-Ohnishi, Yoshikatsu Matsubayashi
Plants achieve mineral ion homeostasis by means of a hydrophobic barrier on endodermal cells called the Casparian strip, which restricts lateral diffusion of ions between the root vascular bundles and the soil. We identified a family of sulfated peptides required for contiguous Casparian strip formation in Arabidopsis roots. These peptide hormones, which we named Casparian strip integrity factor 1 (CIF1) and CIF2, are expressed in the root stele and specifically bind the endodermis-expressed leucine-rich repeat receptor kinase GASSHO1 (GSO1)/SCHENGEN3 and its homolog, GSO2. A mutant devoid of CIF peptides is defective in ion homeostasis in the xylem. CIF genes are environmentally responsive. Casparian strip regulation is not merely a passive process driven by root developmental cues; it also serves as an active strategy to cope with adverse soil conditions.
[Report] Root diffusion barrier control by a vasculature-derived peptide binding to the SGN3 receptorScience ( IF 34.661 ) 2017-01-20
Verónica G. Doblas, Elwira Smakowska-Luzan, Satoshi Fujita, Julien Alassimone, Marie Barberon, Mathias Madalinski, Youssef Belkhadir, Niko Geldner
The root endodermis forms its extracellular diffusion barrier by developing ringlike impregnations called Casparian strips. A factor responsible for their establishment is the SCHENGEN3/GASSHO1 (SGN3/GSO1) receptor-like kinase. Its loss of function causes discontinuous Casparian strips. SGN3 also mediates endodermal overlignification of other Casparian strip mutants. Yet, without ligand, SGN3 function remained elusive. Here we report that schengen2 (sgn2) is defective in an enzyme sulfating peptide ligands. On the basis of this observation, we identified two stele-expressed peptides (CASPARIAN STRIP INTEGRITY FACTORS, CIF1/2) that complement sgn2 at nanomolar concentrations and induce Casparian strip mislocalization as well as overlignification—all of which depend on SGN3. Direct peptide binding to recombinant SGN3 identifies these peptides as SGN3 ligands. We speculate that CIF1/2-SGN3 is part of a barrier surveillance system, evolved to guarantee effective sealing of the supracellular Casparian strip network.
[Report] Regional and global sea-surface temperatures during the last interglaciationScience ( IF 34.661 ) 2017-01-20
Jeremy S. Hoffman, Peter U. Clark, Andrew C. Parnell, Feng He
The last interglaciation (LIG, 129 to 116 thousand years ago) was the most recent time in Earth’s history when global mean sea level was substantially higher than it is at present. However, reconstructions of LIG global temperature remain uncertain, with estimates ranging from no significant difference to nearly 2°C warmer than present-day temperatures. Here we use a network of sea-surface temperature (SST) records to reconstruct spatiotemporal variability in regional and global SSTs during the LIG. Our results indicate that peak LIG global mean annual SSTs were 0.5 ± 0.3°C warmer than the climatological mean from 1870 to 1889 and indistinguishable from the 1995 to 2014 mean. LIG warming in the extratropical latitudes occurred in response to boreal insolation and the bipolar seesaw, whereas tropical SSTs were slightly cooler than the 1870 to 1889 mean in response to reduced mean annual insolation.
[Report] Scaling carbon nanotube complementary transistors to 5-nm gate lengthsScience ( IF 34.661 ) 2017-01-20
Chenguang Qiu, Zhiyong Zhang, Mengmeng Xiao, Yingjun Yang, Donglai Zhong, Lian-Mao Peng
High-performance top-gated carbon nanotube field-effect transistors (CNT FETs) with a gate length of 5 nanometers can be fabricated that perform better than silicon complementary metal-oxide semiconductor (CMOS) FETs at the same scale. A scaling trend study revealed that the scaled CNT-based devices, which use graphene contacts, can operate much faster and at much lower supply voltage (0.4 versus 0.7 volts) and with much smaller subthreshold slope (typically 73 millivolts per decade). The 5-nanometer CNT FETs approached the quantum limit of FETs by using only one electron per switching operation. In addition, the contact length of the CNT CMOS devices was also scaled down to 25 nanometers, and a CMOS inverter with a total pitch size of 240 nanometers was also demonstrated.
[Report] Transformation of bulk alloys to oxide nanowiresScience ( IF 34.661 ) 2017-01-20
Danni Lei, Jim Benson, Alexandre Magasinski, Gene Berdichevsky, Gleb Yushin
One dimensional (1D) nanostructures offer prospects for enhancing the electrical, thermal, and mechanical properties of a broad range of functional materials and composites, but their synthesis methods are typically elaborate and expensive. We demonstrate a direct transformation of bulk materials into nanowires under ambient conditions without the use of catalysts or any external stimuli. The nanowires form via minimization of strain energy at the boundary of a chemical reaction front. We show the transformation of multimicrometer-sized particles of aluminum or magnesium alloys into alkoxide nanowires of tunable dimensions, which are converted into oxide nanowires upon heating in air. Fabricated separators based on aluminum oxide nanowires enhanced the safety and rate capabilities of lithium-ion batteries. The reported approach allows ultralow-cost scalable synthesis of 1D materials and membranes.
[Report] Time-resolved x-ray absorption spectroscopy with a water window high-harmonic sourceScience ( IF 34.661 ) 2017-01-20
Yoann Pertot, Cédric Schmidt, Mary Matthews, Adrien Chauvet, Martin Huppert, Vit Svoboda, Aaron von Conta, Andres Tehlar, Denitsa Baykusheva, Jean-Pierre Wolf, Hans Jakob Wörner
Time-resolved x-ray absorption spectroscopy (TR-XAS) has so far practically been limited to large-scale facilities, to subpicosecond temporal resolution, and to the condensed phase. We report the realization of TR-XAS with a temporal resolution in the low femtosecond range by developing a tabletop high-harmonic source reaching up to 350 electron volts, thus partially covering the spectral region of 280 to 530 electron volts, where water is transmissive. We used this source to follow previously unexamined light-induced chemical reactions in the lowest electronic states of isolated CF4+ and SF6+ molecules in the gas phase. By probing element-specific core-to-valence transitions at the carbon K-edge or the sulfur L-edges, we characterized their reaction paths and observed the effect of symmetry breaking through the splitting of absorption bands and Rydberg-valence mixing induced by the geometry changes.
[Editors' Choice] Making garnets the hard wayScience ( IF 34.661 ) 2017-01-20
Author: Brent Grocholski
[Editors' Choice] Know who you are asking for moneyScience ( IF 34.661 ) 2017-01-20
Author: Gilbert Chin
[Editors' Choice] Blind climberScience ( IF 34.661 ) 2017-01-20
Author: Sacha Vignieri
[Editors' Choice] A different kind of chemical plantScience ( IF 34.661 ) 2017-01-20
Author: Jake Yeston
Some contents have been Reproduced by permission of The Royal Society of Chemistry.
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