Herein we disclose a catalytic synthesis of cycloalkanols that harnesses the potential of N2O as an oxygen transfer agent onto sp3-hybridized carbons. The protocol is distinguished by its mild conditions and wide substrate scope, thus offering an opportunity to access carbocyclic compounds from simple precursors even in an enantioselective manner. Preliminary mechanistic studies suggest that the oxygen

With one-third of food being wasted at the various steps of the value chain, there is a large amount of biomass constantly being discarded, also wasting the resources consumed for its production. Several strategies have been proposed to use this biomass as a source of raw materials for the production of plastic alternatives, but the environmental impact parameters have rarely been estimated to understand

Metal-nitride complexes have recently been proposed as an efficient noble-metal-free catalyst for ammonia synthesis utilizing a dual active site concept. However, their high sensitivity to air and moisture restricted potential applications. Here, we report that their chemical sensitivity can be improved by introducing Al into LaN lattice that form La-Al metallic bond (La-Al-N). The catalytic activity

We describe c ooperative bimetallic catalysis that enables regio-/stereodivergent asymmetric α-allylations of aldimine esters. By employing Et 3 B as the key activator, racemic allylic alcohols can be directly ionized to form Pd or Ir- p-allyl species in the presence of achiral Pd or chiral Ir complexes, respectively. The less or more substituted allylic termini of the metal-p-allyl species are amenable

We demonstrate that several visible-light mediated carbon–heteroatom cross-couplings can be carried out using a photoactive NiII precatalyst that forms in situ from a nickel salt and a bipyridine ligand decorated with two carbazole groups (Ni(Czbpy)Cl2). The activation of this precatalyst towards cross-couplings follows a hitherto undisclosed mechanism that is different from previously reported light-responsive

Controlling the deposition and diffusion of adsorbed atoms (adatoms) on the surface of a solid material is vital for engineering the shape and function of nanocrystals. Here, we report the use of single-stranded DNA (oligo-adenine, oligo-A) to encode the wettability of gold seeds by homogeneous gold adatoms to synthesize highly tunable plasmonic nanostructures. We find that the oligo-A attachment transforms

Dynamic covalent polymer networks provide an interesting solution to the challenging recyclability of thermosets and elastomers. One of the remaining design constraints, however, is balancing thermal reprocessability in the form of material flow with dimensional stability during use. As a result, many chemistries are being investigated in order to improve bond reactivity control and material robustness

Currently, the less favorable C=O hydrogenation and weak concerted acid catalysis cause unsatisfactory catalytic performance in the upgrading biomass-derived furfurals (i.e., furfural, 5-methyl furfural, and 5-hydroxymethyl furfural) to ketones (i.e., cyclopentanone, 2,5-hexanedione, and 1-hydroxyl-2,5-hexanedione). Herein, a series of partial oxidized MAX phase (i.e., Ti 3 AlC 2 , Ti 2 AlC, Ti 3 SiC

: Porous organic molecular materials represent an emergent field of research in Chemistry and Materials Science due to their unique combination of properties. To enhance their performance and expand the number of applications, the incorporation of hierarchical porosity is required, as exclusive microporosity entails several limitations. However, the integration of macropores in porous organic molecular

A nickel-catalyzed reductive cross-electrophile coupling between the redox-active N- trifluoroethoxyphthalimide and iodoarenes is documented. The protocol reproduces a formal arylation of trifluoroacetaldehyde under mild conditions in high yields (up to 88%) and with large functional group tolerance (30 examples). A combined computational and experimental investigation revealed a pivotal solvent assisted

Synthetic multichromophore systems are of great importance in artificial light harvesting devices, organic optoelectronics, tumor imaging and therapy. Here, we introduce a promising strategy for the construction of self-assembled peptide templated dye stacks based on coupling of a de novo designed pH sensitive peptide with a cyanine dye Cy5 at its N-terminus. Microscopic techniques, in particular cryogenic

We report a general synthetic route toward freeform helical ladder polymers with varying spring constants, built with chirality-assisted synthesis (CAS). Under tension and compression, these shape-persistent structures do not unfold, but rather stretch and compress akin classical Hookean springs. Our synthesis is adaptable to helices with different pitch and diameter, which allowed us to investigate

Electromerism is a very well-known phenomenon in transition metal chemistry. In main group chemistry, this concept has only started getting attention recently. We report stimuli responsive low-valent silicon compounds exhibiting electromerism. A mixed-valent silaiminyl-silylene 1 , [ L Si-Si(NDipp) L ] ( L = PhC(N t Bu) 2 ), was synthesized in a single step from amidinate-chlorosilylene. Compound 1

A systematic study to access stable stannaimines is reported, by combining different heteroleptic stannylenes with a range of organic azides. The reactions of terphenyl-/hypersilyl-substituted stannylenes yield the putative tin nitrogen double bond, but is directly followed by 1,2-silyl migration to give Sn(II) systems featuring bulky silylamido ligands. By contrast, the transition from a two V donor

The excited-state version of the Creutz-Taube ion was prepared via visible light excitation of [(NH 3 ) 5 Ru II ( μ -pz)Ru II (NH 3 ) 5 ] 4+ . The resulting excited state is a mixed valence {Ru III–δ ( μ -pz •– )Ru II+δ } transient species, which was characterized using femtosecond transient absorption spectroscopy with vis-NIR detection. Very intense photoinduced intervalence charge transfers were

Vinylene-linked two-dimensional covalent organic frameworks (V-2D-COFs) have shown great promise in electronics and optoelectronics. However, only a few reactions for V-2D-COFs have been developed hitherto. Besides the kinetically low reversibility of C=C bond formation, another underlying issue facing the synthesis of V-2D-COFs is the attainment of high ( E )-alkene selectivity to ensure the appropriate

Co3O4 is an ideal p-type material for photoelectrochemical (PEC) hydrogen evolution, while serious electron-hole recombination restrict its further improvement of the PEC activity. The construction of traditional heterojunction can effectively solve this problem. However, the PEC water splitting efficiency is still tough to be satisfactory due to the inevitable generation of heterojunction interface

The application of lithium−sulfur (Li−S) batteries are mainly hindered by the shuttle effect of soluble polysulfides and the sluggish kinetics of sulfur redox reaction. Hence, a bidirectional catalyst, in which single vanadium (V) atoms with V-N4 coordination and vanadium nitride nanodots with abundant nitrogen vacancies (VN1-x) are decorated on nitrogen-doped carbon nanosheets (VN1-x@V-NC), was designed

The wide application of Li metal anodes is hindered by the inhomogeneous growth of Li dendrites. Herein, we propose an ultrafast microwave-induced synthesis method for a lithiophilic 3D porous mesh skeleton converted by commercial brass mesh. Due to the lithiophilic oxides (FeO and CuO) granular layer and 3D porous structure, this novel skeleton can be used as a current collector to achieve a high-stability

The preparation of polymer hydrogels with excellent mechanical stability and high conductivity still remains huge challenges in practical applications as wearable electronics and energy storage. Herein a new strategy is proposed to prepare uniform poly(amidoxime)/polyethyleneimine (PAO/PEI) hydrogel through hydrogen bond interactions. The as-prepared PAO/PEI hydrogels demonstrate good compressive strength

Air pollution is becoming more and more serious, which has a huge impact on human production and life. Dust particulate matter (PM) is one of the main pollutants in the air, threatening human life and health. In this work, a triboelectric air filtration system (TAFS) based on triboelectric nanogenerators (TENGs) was developed for active removal of outdoor PM2.5 and harmful bacteria. The TAFS consists

Semi-transparent organic solar cells (ST-OSCs) have attracted significant attention for various applications such as building-integrated photovoltaics and smart window technologies. Although various low-band gap non-fullerene acceptors have been developed, near-infrared (NIR) absorbing polymeric donors have been rarely reported for highly efficient ST-OSCs. In this study, we synthesize cyclopentadithiophene

High demands of medical and husbandry sectors led to a massive annual production of 100,000 tonnes of various antibiotics on a global scale. Considering that an access to sublethal doses of these pharmaceuticals causes subsequent increase in resistance of virulent human bacterial pathogens, there is a substantial need for development of novel methods and techniques for degradation of antibiotics from

Solar vapor generation is regarded as a promising approach to alleviate the water shortage crisis via desalination, while the efficiency is limited by the insufficient vapor escape and adverse effect of salt deposition. Herein, a pyramid structural solar vapor generator is developed combing electrospun polyacrylonitrile/carbon nanotubes (PAN/CNTs) nanofibers and 3D printing technology. Benefiting from

Dielectric ceramics for electrostatic energy storage suffer from low recoverable-energy-density (Wrec) at a low-electric-field (LEF), constraining their use in downsizing integrated electronic devices and low operating voltage environments. Here, we report a 0.85Bi0.5Na0.5TiO3–0.15(Sr0.7Bi0.2)(Mg1/3Nb2/3)O3 (0.85BNT–0.15SBMN) relaxor ferroelectric ceramic that exhibits a high Wrec of 3.6 J/cm3 at a