Variation among individuals in number of offspring (fitness, k) sets an upper limit to the evolutionary response to selection. This constraint is quantified by the Opportunity for Selection (I; Crow 1958), which is the variance in relative fitness (I=(Vk^2)/(uk)^2). Crows I has been widely used but remains controversial because it depends on mean offspring number in a sample (kbar). Here I used a generalized Wright-Fisher model that allows for unequal probabilities of producing offspring to evaluate...
Wed Jul 01, 2020 03:00
EukProt is a database of published and publicly available predicted protein sets and unannotated genomes selected to represent eukaryotic diversity, including 742 species from all major supergroups as well as orphan taxa. The goal of the database is to provide a single, convenient resource for studies in phylogenomics, gene family evolution, and other gene-based research across the spectrum of eukaryotic life. Each species is placed within the UniEuk taxonomic framework in order to facilitate downstream...
Wed Jul 01, 2020 03:00
In mammals, reproduction is influenced by competitive stress, temperature and food availability and these factors might be crucial already during early life. Favourable early life environment and high maternal investment are expected to improve survival and reproduction. In mammals, maternal investment via lactation predicts offspring growth. As body mass is often associated with fitness consequences, females have the potential to influence offspring fitness through their level of investment, which...
Wed Jul 01, 2020 03:00
Horizontal gene transfer (HGT), the movement of heritable materials between distantly related organisms, is crucial in eukaryotic evolution. However, the scale of HGT in choanoflagellates, the closest unicellular relatives of metazoans, and its possible roles in the evolution of animal multicellularity remains unexplored. We identified 703 potential HGTs in the S. rosetta genome using sequence-based tests. The majority of which were orthologous to bacterial lineages, yet displayed genomic features...
Wed Jul 01, 2020 03:00
The C to T mutation at rs4988235 located upstream of the lactase (LCT) gene is the primary determinant for lactase persistence (LP) that is prevalent among Europeans and South Asians. Here, we review evolutionary studies of this mutation based on ancient and present-day human genomes with the following concluding remarks: the mutation arose in the Pontic Steppe somewhere between 23,000 and 5000 years ago, emigrated into Europe and South Asia in the Bronze Age via the expansion of the Steppe ancestry,...
Wed Jul 01, 2020 03:00
Rapid ecological radiations provide useful models for identifying instances of parallel evolution, which can highlight critical genomic architecture involved in shared adaptations. Thermoregulatory innovations have allowed deer mice of the genus Peromyscus to radiate throughout North America, exploiting extreme thermal environments from mountain tops to desert valleys, and positioning this taxon as a model for understanding thermal adaptation. We compare signatures of selective sweeps across population-level...
Wed Jul 01, 2020 03:00
Assessing the relative importance of geographic and environmental factors to the spatial distribution of genetic variation may provide relevant information about the processes that maintain genetic variation in natural populations. With a globally wide but very restricted habitat distribution, mangrove trees are an interesting model for studies aiming to understand the contributions of these factors. Mangroves occur along the continent-ocean interface of tropical and subtropical latitudes, regions...
Tue Jun 30, 2020 03:00
Major evolutionary transitions in individuality, at any level of the biological hierarchy, occur when groups participate in Darwinian processes as units of selection in their own right. Identifying transitions in individuality can be problematic because apparent selection at one level of the biological hierarchy may be a by-product of selection occurring at another level. Here we discuss approaches to this 'levels-of-selection' problem and apply them to a previously published experimental exploration...
Tue Jun 30, 2020 03:00
The availability of whole genome sequencing data from multiple related populations creates opportunities to test sophisticated population genetic models of convergent adaptation. Recent work by Lee and Coop (2017) developed models to infer modes of convergent adaption at local genomic scales, providing a rich framework for assessing how selection has acted across multiple populations at the tested locus. Here I present, rdmc, an R package that builds on the existing software implementation of Lee...
Tue Jun 30, 2020 03:00
Related Articles Cardiovascular toxicity induced by anti-VEGF/VEGFR agents: a special focus on definitions, diagnoses, mechanisms and management. Expert Opin Drug Metab Toxicol. 2020 Jun 29;: Authors: Jiang L, Ping L, Yan H, Yang X, He Q, Xu Z, Luo P Abstract INTRODUCTION: Vascular endothelial growth factor (VEGF) is a key target in cancer therapy. However, cardiovascular safety has been one of the most challenging aspects of anti-VEGF/VEGF...
07:36
In principle, nanoparticle occlusion within crystals provides a straightforward and efficient route to make new nanocomposite materials. However, developing a deeper understanding of the design rules underpinning this strategy is highly desirable. In particular, controlling the spatial distribution of the guest nanoparticles within the host crystalline matrix remains a formidable challenge. Herein, we show that the surface chemistry of the guest nanoparticles and the [Ca 2+ ] concentration play...
Wed Jul 01, 2020 18:35
Intriguing properties and functions are expected to implant into metal‐organic layers (MOLs) to achieve tailored pore environments and multiple functionalities owing to the synergies among multiple components. Herein, we demonstrated a facile one‐pot synthetic strategy to incorporate multi‐functionalities into stable zirconium MOLs via secondary ligand pillaring. Through the combination of Zr 6 −BTB (BTB = benzene‐1,3,5‐tribenzoate) layers and diverse secondary ligands (including ditopic and tetratopic...
Wed Jul 01, 2020 18:34
Histone deacetylase (HDAC) is a major class of deacetylation enzymes. Many HDACs exist in large protein complexes in cells and their functions strongly depend on the complex composition. The identification of HDAC‐associated proteins is highly important in understanding their molecular mechanisms. Although affinity probes have been developed to study HDACs, they were mostly targeting the direct binder HDAC, while other proteins in the complex remain under‐explored. We report a DNA‐based affinity...
Wed Jul 01, 2020 17:05
Alkaline phosphatase (ALP) is an important biomarker, as high levels of ALP in blood can indicate liver disease or bone disorders. However, current clinical blood tests only measure the total concentration of ALP but are unable to distinguish enzyme isotypes. Here, we demonstrate a novel and rapid approach to profile various ALP isozymes in blood via a single‐molecule‐analysis platform. The microarray platform provides enzyme kinetics of hundreds of individual molecules at high throughput. Using...
Wed Jul 01, 2020 17:04
Turn and flip : A C59N+ cation has been trapped by ethanol or water in a tubular host to fix an oxy substituent on the fullerene guest. The substituent was found to modulate the guest motion, with the up‐and‐down flipping motions of the guest facilitated by the OH group sliding along the inner wall of the host while staying attached through OH‐π hydrogen bonds, whereas an ethoxy substituent halted such motions. Abstract A supramolecular/synthetic method has been devised to affix a sterically...
Wed Jul 01, 2020 22:00
Leupeptin is a bacterial small molecule that is used worldwide as a protease inhibitor. However, its biosynthesis and genetic distribution remain unknown. Here, we identified a family of leupeptins in gammaproteobacterial pathogens, including Photorhabdus, Xenorhabdus, and Klebsiella species, amongst others. Through genetic, metabolomic, and heterologous expression analyses, we established their construction from discretely expressed ligases and accessory enzymes. In Photorhabdus species, a hypothetical...
Wed Jul 01, 2020 17:30
Owing to the intrinsically low dielectric properties, robust Coulomb interactions between photoinduced electrons and holes lead to dramatically strong exciton effects in polymeric photocatalysts. Such effects endow polymeric matrixes with nontrivial photoexcitation processes that are closely associated with photocatalytic solar energy utilization. In this Minireview, we describe recent progress in the investigation of excitonic aspect in polymeric photocatalysts. On the basis of the understanding...
Wed Jul 01, 2020 17:28
En route : The sulfone group facilitates the formation of a range of reduction substrates through asymmetric transfer hydrogenation (ATH) of ketones, and its ready removal provides a route to challenging enantiomerically enriched alcohols. Abstract The sulfone functional group has a strong capacity to direct the asymmetric transfer hydrogenation (ATH) of ketones in the presence of [(arene)Ru(TsDPEN)H] complexes by adopting a position distal to the η6‐arene ring. This preference provides...
Wed Jul 01, 2020 17:11
PB&J? Phosphinoboration across a triple bond catalyzed by tributyl phosphine was achieved. The trans‐α‐phosphino‐β‐boryl acrylate products are obtained in moderate to good yield with high regio‐ and Z‐selectivity. This reaction operates under mild conditions and demonstrates good atom economy, requiring only a modest excess of the phosphinoboronate. Abstract We report the first trans phosphinoboration of internal alkynes. With an organophosphine catalyst, alkynoate esters and the...
Wed Jul 01, 2020 16:34
Light up the dark ! The reduction of (nBu3P)AgCl with LiBH( s Bu)3 in toluene gives the highly unstable metalloid silver cluster Ag64(PnBu3)16Cl6 as dark red, temperature‐ and light‐sensitive single crystals in high yield. This is the largest structurally characterized metalloid silver cluster exhibiting chlorine and phosphine substituents only. Abstract The reduction of (nBu3P)AgCl with LiBH(sBu)3 in toluene gives the metalloid silver cluster Ag64(PnBu3)16Cl6 (1 ) as dark red, temperature‐...
Wed Jul 01, 2020 16:34
Scatter about : An asymmetric electric field produced by an asymmetric arrangement of silver atoms in conjunction with charge‐transfer transitions enables the discrimination of enantiomeric compounds using tip‐enhanced Raman scattering (TERS) without chiral reagents. The unique TERS phenomenon, wherein the number of hydrogen bonds formed by functional groups on the analyte modulates the degree of discrimination, is a result of the near‐field effect of the asymmetric electric field. Abstract...
Wed Jul 01, 2020 16:34
The bimetallic Rh‐In catalyst offers selective sites for capturing hydrogen and CO2 to approach methanol formation under H2‐deficient feedstock compositions with high methanol yield but minimizing the reverse water‐gas shift reaction. Using this catalyst, a convenient methanol synthesis based on renewable biomass‐derived feedstocks with lower energy costs can be established. Abstract There is increasing interest in capturing H2 generated from renewables with CO2 to produce methanol. However,...
Wed Jul 01, 2020 16:33
A precise thermal sensing DNA nanojoint comprised of two interlocked DNA rings switches reversibly between a static and mobile state at different temperatures. The temperature response range is tuned by changing the length or sequence of the hybridizing region between two rings, which, unlike non‐interlocked systems, is independent from its concentration. Abstract The ability to precisely measure and monitor temperature at high resolution at the nanoscale is an important task for better...
Wed Jul 01, 2020 16:32
Peroxide triggered, peroxide excited : Real‐time monitoring of hydrogen peroxide (H2O2) in rat brains has been achieved by combining a unique H2O2 sensing strategy and a peroxide bond excited chemiluminescent scaffold. This direct activation of phenoxy‐dioxetane by a tandem Payne/Dakin reaction provides a highly selective, sensitive, and rapid detection of H2O2 in chemical systems, the cellular environment, and living animals. Abstract Selective and sensitive molecular probes for hydrogen...
Wed Jul 01, 2020 16:32
A facile template‐free method is developed for the synthesis of functional cross‐linked polyphosphazene nanospheres with tunable hollow structures and properties. After coordinating with metal ions, these nanospheres are directly pyrolyzed to afford mesoporous hollow carbon nanospheres with single atom Co‐N2P2 sites for superior electrocatalysis. Abstract Heteroatom‐doped polymers or carbon nanospheres have attracted broad research interest. However, rational synthesis of these nanospheres...
Wed Jul 01, 2020 16:30
Just a hop and a skip away : A simple and mild dicarbofunctionalization of internal alkynes was developed by using Ni(COD)2/PPh3 as the catalyst and free allylic alcohols and AlMe3 as the inexpensive reagents (see scheme). Diversiform polyenes were prepared by this method with high stereoselectivity. Abstract We present herein an unprecedented allylative dicarbofunctionalization of alkynes with allylic alcohols. This simple catalytic procedure utilizes commercially available Ni(COD)2, triphenylphosphine,...
Wed Jul 01, 2020 16:29
The adsorption dynamics of n‐butane on a series of imidazolium‐based ionic liquids (ILs) is investigated. The adsorption energy increases with increasing length of the IL alkyl chain, whereas the ionic headgroups seem to interact only weakly with n‐butane. The absence of adsorption on the C1‐ and C2‐ILs is attributed to a too short residence time on the ionic liquid surface to form nuclei for condensation. Abstract The impact of a reactant from the gas phase on the surface of a liquid...
Wed Jul 01, 2020 16:29
A covalent triazine polymeric photocatalyst with unique donor‐acceptor units was designed. It enabled the metal‐free photocatalytic hydrogenation of maleic acid to succinic acid, as well as furfural to furfuryl alcohol, with an incredible production rate, great stability, and recyclability. Abstract Photocatalytic hydrogenation of biomass‐derived organic molecules transforms solar energy into high‐energy‐density chemical bonds. Reported herein is the preparation of a thiophene‐containing...
Wed Jul 01, 2020 16:29
Rational Design of Cyclometalated Iridium(III) Complexes for Three‐Photon Phosphorescence Bioimaging
Cyclometalated iridium(III) complexes were developed as mitochondria‐targeted three‐photon phosphorescence agents for confocal imaging and phosphorescence lifetime imaging. The agents can be used from monolayer cells to the living body, with both large penetration depth and great resolution at excitation wavelength of 980 nm. Abstract Compared to 2PE (two‐photon excitation) microscopy, 3PE microscopy has superior spatial resolution, deeper tissue penetration, and less defocused interference....
Wed Jul 01, 2020 16:29
A binary system , containing polypeptide homopolymer and its block copolymer, hierarchically self‐assembles into helical nanotoroids in which the homopolymers aggregate into fibrils and then convolve into a toroidal template. The block copolymers form helical patterns on the toroids. Abstract Toroids and helices are fundamental geometrical structures in nature. Polymers can self‐assemble into various nanostructures, including both toroids and helices; however, nanostructures combining toroidal...
Wed Jul 01, 2020 16:28
HCN formation over common SCR catalysts : Natural gas engines emit less CO2 in comparison to common liquid fuel combustion engines and are therefore an attractive alternative. Nevertheless, they still require emission control devices for NO x removal. As HCHO is present in the exhaust, this study was focused on the interplay of HCHO and other compounds of an SCR gas mixture and revealed the formation of HCN over a broad variety of common NH3‐SCR catalysts. Abstract Reducing greenhouse...
Wed Jul 01, 2020 16:27
Herein we report the synthesis, structure solution, and catalytic properties of PST‐24, a novel channel‐based medium‐pore zeolite. This zeolite was synthesized using pentamethylimidazolium ions as an organic structure‐directing agent via the excess fluoride approach. A combination of three‐dimensional (3D) electron diffraction and high‐resolution transmission electron microscopy shows that its structure is built by composite cas‐zigzag ( cas‐zz ) building chains, which are connected by double...
Wed Jul 01, 2020 15:59
The blood–brain barrier (BBB) restricts access to the brain of more than 98% of therapeutic agents and is largely responsible for treatment failure of glioblastoma multiforme (GBM). Therefore, it is of great importance to develop a safe and efficient strategy for more effective drug delivery across the BBB into the brain. Inspired by the extraordinary capability of rabies virus (RABV) to enter the central nervous system, we report the development and evaluation of the metal–organic framework‐based...
Wed Jul 01, 2020 13:58
Metal complexes have been widely investigated as promising electrocatalysts for CO 2 reduction. Most of the current research efforts mainly focus on ligands based on pyrrole subunits and the reported activities are still far from satisfactory. A novel planar and conjugated N4‐macrocyclic cobalt complex (Co(II)CPY) derived from phenanthroline subunits is prepared herein, which delivers high activity for heterogeneous CO 2 electrocatalysis to CO in an aqueous medium and outperforms most of the...
Wed Jul 01, 2020 12:58
The right chemistry : A chemical, rather than electrochemical, magnesiation/de‐magnesiation process with the assistance of the Cu+ equilibrium is revealed. It guarantees fast charging/discharging processes and long‐term durability of rechargeable Mg batteries under practically high mass‐loading conditions. Abstract Sluggish kinetics and poor reversibility of cathode chemistry is the major challenge for magnesium batteries to achieve high volumetric capacity. Introduction of the cuprous...
Wed Jul 01, 2020 11:25
Zeolites are widely used in catalysis, gas separation, ion exchange, etc. due to their superior physicochemical properties, which are closely related to specific features of their framework structures. Although more than two hundred different framework types have been recognized through the years, it is of great interest to explore from a crystallographic perspective, the atomic positions, surface terminations, pore connectivity and structural defects that deviate from the ideal framework structures,...
Tue Jun 30, 2020 21:28
Generation of hydroxyl radicals in the Fenton system (Fe(II)/H 2 O 2 ) is seriously limited by the sluggish kinetics of Fe(III) reduction and fast Fe(III) precipitation. For the first time, we discover that boron crystals (C‐Boron) remarkably accelerate the Fe(III)/Fe(II) circulation in Fenton‐like systems (C‐Boron/Fe(III)/H 2 O 2 ) to produce a myriad of hydroxyl radicals with excellent efficiencies in oxidative degradation of various pollutants. The surface B‐B bonds and interfacial suboxide...
Tue Jun 30, 2020 18:28
The thermally induced cyclodehydrofluorization of irontetrakis(pentafluorophenyl)porphyrin proceeds highly stereo‐selectively into a prochiral product on a gold surface in ultrahigh vacuum, whereas dehydrocyclization of the respective irontetrakisphenylporphyrin does not show such selectivity. Stereoselectivity is predominantly observed for closely packed layers, which is an indication of intermolecular cooperativity and steric constrain induced by adjacent species. Density functional theory identifies...
Tue Jun 30, 2020 17:32
Demand for energy‐efficient gas separations exists across many industrial processes, and membranes can aid in meeting this demand. Carbon molecular sieve (CMS) membranes show exceptional separation performance and scalable processing attributes attractive for important, similar‐sized gas pairs. Herein, we outline a mathematical and physical framework to understand these attributes. This framework shares features with dual‐mode transport theory for glassy polymers; however, physical connections to...
Tue Jun 30, 2020 17:29
The oxygen evolution reaction (OER) is key to renewable energy technologies such as water electrolysis and metal‐air batteries. However, the multiple steps associated with proton‐coupled electron transfer result in sluggish OER kinetics and catalysts are required. Here we demonstrate that a novel nitride, Ni2Mo3N, is a highly active OER catalyst that outperforms the benchmark material RuO2 . Ni2Mo3N exhibits a current density of 10 mA cm‐2 at a nominal overpotential of 270 mV in 0.1 M KOH with...
Tue Jun 30, 2020 17:15
Platinum(IV) complexes are extensively studied for their activity against cancer cells as potential substitutes for the widely used platinum(II) drugs. Pt(IV) complexes are kinetically inert and need to be reduced to Pt(II) species to play their pharmacological action, thus acting as prodrugs. The mechanism of the reduction step inside the cell is however still largely unknown. Gas‐phase activation of deprotonated platinum(IV) prodrugs was found to generate products in which platinum has a formal...
Tue Jun 30, 2020 17:14
Perovskite nanocrystals (NCs) have revolutionized optoelectronic devices because of their versatile optical properties. However, controlling and extending these functionalities often requires a light management strategy involving additional processing steps. Here, we introduce a simple approach to shape perovskite nanocrystals (NC) into photonic architectures that provide light management by directly shaping the active material. Pre‐patterned polydimethylsiloxane (PDMS) templates are used for the...
Tue Jun 30, 2020 17:12
In this work, the largest heterometallic supertetrahedral clusters, [Zn6Ge16]4– and [Cd6Ge16]4–, were directly self‐assembled through highly‐charged [Ge4]4– units and transition metal cations, in which 3‐center‐2‐electron σ bonding in Ge2Zn or Ge2Cd triangles plays a vital role in the stabilization of the whole structure. The cluster structures have an open framework with a large central cavity of diameter 4.6 Å for Zn and 5.0 Å for Cd, respectively. Time‐dependent HRESI‐MS spectra show that the...
Tue Jun 30, 2020 17:11
Cell membranes contain lateral systems that consist of various lipid compositions and actin cytoskeleton, providing two‐dimensional (2D) platforms for chemical reactions. However, such complex 2D environments have not yet been used as a synthetic platform for artificial 2D nanomaterials. Herein, we demonstrate the direct synthesis of 2D coordination polymers (CPs) at the liquid−cell interface of the plasma membrane of living cells. The coordination‐driven self‐assembly of networking metal complex...
Tue Jun 30, 2020 17:10
Transition‐metal phosphides (TMP) prepared by atomic layer deposition (ALD) is reported for the first time. Ultrathin Co‐P films were deposited by using PH 3 plasma as the phosphorus source and H 2 plasma as an extra etching step to remove excess P in the growing films. The optimized ALD process followed the self‐limited layer‐by‐layer growth behavior, and the deposited Co‐P films were highly pure, smooth, and well‐crystallized. The Co‐P films deposited via ALD exhibited better electrochemical...
Tue Jun 30, 2020 17:10
Aqueous‐phase isomerization of D‐glucose to D‐fructose and L‐sorbose are catalyzed in parallel by Lewis acidic Ti sites in siliceous frameworks. Glucose isomerization rates (per Ti, 373 K) are undetectable when Ti sites are confined within mesoporous voids (Ti‐MCM‐41, TiO2 ‐SiO2) and increase to detectable values when Ti sites are confined within the smaller twelve‐membered ring (12‐MR) micropores of Ti‐Beta. Isomerization rates decrease to lower values (by ~20×) with further decreases in micropore...
Tue Jun 30, 2020 16:00
Unstable electrode/solid‐state electrolyte interface and internal Li dendrite penetration hamper the widespread application of the solid‐state Li metal batteries (SSLMBs), which requires operando techniques to accurately disclose the underlying mechanisms. Herein, in situ optical microscopy insights into the Li plating/stripping processes in a gel polymer electrolyte reveal the corresponding dynamic evolution. Uniform Li deposits evolve into moss‐like and branch‐shaped Li dendrites with the increasing...
Tue Jun 30, 2020 14:31
Entangled proteins have attracted significant research interest. Herein, we report the first rationally designed lasso proteins, or protein [1]rotaxanes, by using p53dim entwined dimer for intramolecular entanglement and SpyTag‐SpyCatcher reaction for side‐chain ring closure. The lasso structures were proven by evidence from proteolytic digestion, mutation, NMR spectrometry and controlled ligation. Their dynamic properties were probed by experiments such as end‐capping, proteolytic digestion, and...
Tue Jun 30, 2020 14:29
Harvesting solar energy in battery systems is pivotal for a sustainable society and faced with challenges. Herein, a photo‐involved Zn‐air battery is constructed with two cathodes of poly(1,4‐di(2‐thienyl))benzene (PDTB) and TiO 2 grown on carbon papers to sandwich a Zn anode. The PDTB cathode is illuminated in a discharging process, where photoelectrons are excited into the conduction band of PDTB to promote oxygen reduction reaction (ORR) and raise the output voltage. In a reverse process, holes...
Tue Jun 30, 2020 13:57
Battery life on Mars : A photoinduced flexible Li‐CO2 battery with hierarchical, porous, and free‐standing In2S3@CNT/SS as a bifunctional photoelectrode to accelerate both CO2 reduction and evolution is presented. The Li‐CO2 battery achieved a record‐high discharge voltage of 3.14 V (thermodynamic limit: 2.80 V), and an ultra‐low charge voltage of 3.20 V, and a roundtrip efficiency of 98.1 %. Abstract A photoinduced flexible Li‐CO2 battery with well‐designed, hierarchical porous, and free‐standing...
Tue Jun 30, 2020 13:04
This work reports on an assembling‐calcining method for preparing Au‐metal oxide core‐satellite nanostructure, which enable surface‐enhanced Raman spectroscopic detection of chemical reactions on metal oxide nanoparticles. By using the nanostructure, we study the photooxidation of Si‐H catalyzed by CuO nanoparticles. As evidenced by the in situ spectroscopic results, oxygen vacancies of CuO are found to be very active sites for oxygen activation, and hydroxide radicals (*OH) adsorbed at the catalytic...
Tue Jun 30, 2020 12:35
The adoption of redox mediators (RMs) is regarded as an effective strategy to enhance reaction kinetics of multi‐electron sulfur electrochemistry. However, the soluble small‐molecule RMs usually aggravate the internal shuttle and thus further reduce the battery efficiency and cyclability. In this contribution, a semi‐immobilization strategy is proposed for RM design to effectively regulate the sulfur electrochemistry while circumvent the inherent shuttle issue in a working battery. Small imide molecules...
Tue Jun 30, 2020 12:34
A photocatalytic double umpolung strategy for the vicinal aminopyridylation of ketones was developed using pyridinium N–N ylides. The inversion of the polarity of the pyridinium N–N ylides by single‐electron oxidation successfully enables radical‐mediated 1,3‐dipolar cycloadditions with enolsilanes formed in situ from ketones, followed by homolytic cleavage of the N–N bond. Intriguingly, the nucleophilic amino and electrophilic pyridyl groups in the ylides can be installed at the nucleophilic α‐position...
Tue Jun 30, 2020 11:32
Encapsulating metal nanoclusters into zeolites enables a synergistic effect that combines superior catalytic activity of the nanoclusters with high stability and unique shape selectivity of the crystalline microporous materials. The preparation of such bifunctional catalysts, however, is often restricted by the mismatching in time scale between the fast formation of nanoclusters and the slow crystallization of zeolites. We herein demonstrate a novel strategy toward overcoming the mismatching issue,...
Tue Jun 30, 2020 11:06
Amorphous iron phosphate (FePO 4 ) has attracted enormous attention as a promising cathode material for sodium‐ion batteries (SIBs) because of its high theoretical specific capacity and superior electrochemical reversibility. Nevertheless, the low rate performance and rapid capacity decline seriously hamper its implementation in SIBs. Herein, we demonstrate a sagacious multi‐step templating approach to skillfully craft amorphous FePO 4 yolk−shell nanospheres with mesoporous nanoyolks supported...
Tue Jun 30, 2020 11:05
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