Gels that are freeze-resistant and heat-resistant and have high ultimate tensile strength are desirable in practical applications owing to their potential in designing flexible energy storage devices, actuators, and sensors. Here, a simple method for fabricating ionic liquid (IL)–based click-ionogels using thiol-ene click chemistry under mild condition is reported. These click-ionogels continue to exhibit excellent mechanical properties and resilience after 10,000 fatigue cycles. Moreover, due to several unique properties of ILs, these click-ionogels exhibit high ionic conductivity, transparency, and nonflammability performance over a wide temperature range (−75° to 340°C). Click-ionogel–based triboelectric nanogenerators exhibit excellent mechanical, freeze-thaw, and heat stability. These promising features of click-ionogels will promote innovative applications in flexible and safe device design.

Human fingers exhibit both high sensitivity and wide tactile range. The finger skin structures are designed to display gradient microstructures and compressibility. Inspired by the gradient mechanical Young's modulus distribution, an electric-field-induced cationic crosslinker migration strategy is demonstrated to prepare gradient ionogels. Due to the gradient of the crosslinkers, the ionogels exhibit more than four orders of magnitude difference between the anode and the cathode side, enabling gradient ionogelbased flexible iontronic sensors having high-sensitivity and broader-range detection (from 3 × 10 2 to 2.5 × 10 6 Pa) simultaneously. Moreover, owing to the remarkable properties of the gradient ionogels, the flexible iontronic sensors also show good long-time stability (even after 10 000 cycles loadings) and excellent performance over a wide temperature range (from −108 to 300 °C). The flexible iontronic sensors are further integrated on soft grips, exhibiting remarkable performance under various conditions. These attractive features demonstrate that gradient ionogels will be promising candidates for smart sensor applications in complex and extreme conditions.

A dual template synthesis strategy was employed to achieve one-step design of meso- and microporous MFI nanosheet assemblies with tailored morphology, mesoporosity, and catalytic activity. A molecular template (tetrapropylammonium hydroxide, TPAOH) and a polyquaternary ammonium surfactant ([C22H45–N+(CH3)2–C6H12–N+(CH3)2–C6H13]Br2, C22–6–6) were used as cotemplates in the synthesis with a composition of 30Na2O/1Al2O3/100SiO2/10C22–6–6/xTPAOH/4000H2O/18H2SO4. By tuning the concentration of TPAOH (x) from 0 to 20, the morphology of the as-obtained MFI nanosheet assemblies changed from intertwined, to house-of-cards-like, and to dense packing plates. The N2 isotherms showed the hysteresis loop at the range of P/P 0 = 0.45–1.0 increases, reaches a maximum, and then decreases with increasing x values, indicating a systematic tailoring of the mesoporosity with TPAOH concentrations. Under strict kinetic control, the rates and apparent activation energies of the ethanol activation in zeolite nanosheet assemblies were comparable. The catalytic conversion of benzyl alcohol in mesitylene showed that the activity of as-obtained MFI zeolites increases, reaching a maximum, and then decreases with increasing x values. The consistency in the variation of morphology, mesoporosity, and catalytic activity with varying x values in the synthesis indicates TPAOH can be used as a secondary template to tailor the textural and catalytic properties of MFI nanosheet assemblies primarily guided by C22–6–6.

In this study,w ed eveloped as uperstrong and reversible adhesive,whichcan possess ahigh bonding strength in the "adhesive" state and detach with the application of heating.A ni onic crystal (IC) gel, in whicha nI Cw as immobilized within as oft-polymer matrix, were synthesized via in situ photo-crosslinking of aprecursor solution composed of N, N-dimethyl acrylamide (DMAA) and am elted IC.T he obtained IC gel is homogenous and transparent at melt point. When cooled to the phase transition temperature of the IC,the gel turns into the adhesive with the adhesion strength of 5.82 MPa(on glasses), due to the excellent wetting of melted gel and at hin layer of crystalline IC with high cohesive strength formed on the substrates.T he synergistic effects between IC, polymer networks and substrates were investigated by solid state 1 HNMR and molecular dynamics simulation. Sucha n adhesive layer is reversable and can be detached by heating and subsequent re-adhesion via cooling. This study proposed the new design of removable adhesives,w hich can be used in dynamic and complex environments.

Non-oxidative methane conversion over Fe©SiO catalyst was studied for the first time in a hydrogen (H ) permeable tubular membrane reactor. The membrane reactor is composed of a mixed ionic-electronic SrCe Zr Eu O thin film (≈20 μm) supported on the outer surface of a one-end capped porous SrCe Zr O tube. Significant improvement in CH conversion was achieved upon H removal from the membrane reactor compared to that in a fixed-bed reactor. The Fe©SiO catalyst in the H permeable membrane reactor demonstrated a stable ≈30 % C single-pass yield, with up to 30 % CH conversion and 99 % selectivity to C (ethylene and acetylene) and aromatic (benzene and naphthalene) products, at the tested conditions. The selectivity towards C or aromatics was manipulated purposely by adding H into or removing H from the membrane reactor feed and permeate gas streams.