Abstract Nonequilibrium oscillation fueled by dissipating chemical energy is ubiquitous in living systems for realizing a broad range of complex functions. The design synthetic materials that can mimic their biological counterparts the production dissipative structures and autonomous oscillations great interest but remains challenging. Here, series environmentally adaptable hydrogels functionalized with photoswitchable spiropyran derivatives display tunable equilibrium‐shifting capability,...

Force-reversible C-N bonds, resulting from the click chemistry reaction between triazolinedione (TAD) and indole derivatives, offer exciting opportunities for molecular-level engineering to design materials that respond mechanical loads. Here, we displayed TAD-indole adducts, acting as crosslink points in dry-state covalently crosslinked polymers, enable display reversible stress-responsiveness real time already at ambient temperature. Whereas exergonic results formation of bench-stable they...

Abstract Non‐covalent crosslinking has provided versatile and affordable solutions for the design of tough soft polymer materials, but it is not applied in stiff high‐performance thermosets. Here, authors report a supramolecular approach thermosets by using noncovalent sandwich‐structural indole‐Mg‐indole complexes that act as force‐reversible energetic points, evading inherent trade‐off between mechanical strength ductility Compared to traditional epoxy crosslinks network enables...

<title>Abstract</title> Phototropism is ubiquitous in plants that endows them directional movement and substantial growth toward light sources. Simultaneous replication of such phototropic volumetric synthetic polymers important but currently remains challenging. Here, we report the molecular design a photoswitchable tricyanofuran (TCF) based hydrogel can concurrently display self-growth water under stimulation pH. The macroscale hdyrogel originates directly from charge rise TCF switch upon...

The design of synthetic hydrogels that can mimic their biological counterparts in the simultaneous production multicolor change and shape transformation response to environmental stimuli is great importance toward intelligent camouflage, encryption, actuation. Previous efforts have focused primarily on developing heterogeneous highly rely respective mechanisms achieve color changes separately, synergistically synchronizing such two variations into structurally homogenous via a single...

Abstract The integration of photoswitchable supramolecular units into hydrogels allows for spatiotemporal control over their nanoscale topological network and macroscale properties using light. Nevertheless, the current availability interactions development such materials remains limited. Here, molecular design a novel cucurbit[8]uril‐spiropyran host–guest complex exhibiting fast reversible switching binding ratios between 1:2 1:1 is reported. Photoswitchable complexation stoichiometries are...

Metal coordination crosslinking between stiff N-polyindole chains was constructed, and the crosslinked films exhibited high tensile strength, heat resistance excellent polar solvent resistance. The noncovalent can be further removed via external pyrophosphate, which endows polymer with a recyclable behavior. strength glass transition temperature of polymers nondestructively detected by taking advantage fluorescence quenching effect metal to adjacent bipyridine structure.

A novel fluorescent probe for Pd2+ based on the BODIPY fluorophore exploiting PET (Photoinduced Electron Transfer) mechanism was designed and successfully synthesized. The 1 prepared by introducing m-bisimidazolylbenzene which connected phenyl acetylene to dye at meso position. It exhibited a rapid response high sensitivity selectivity toward Pd2+. Probe presented quenched fluorescence in aqueous buffer media (pH 5.5) detection limit estimated from titration results 2.9 × 10-7 M. Meanwhile,...

Supramolecular chemistry has provided versatile and affordable solutions for the design of tough, flexible polymers. However, application supramolecular been limited to production rigid, high-performance polymers due weak segment mobility. This paper describes a new method toughening rigid using synergistic effect between dual Cu2+ -coordination bonds as crosslink. These cross-linked are class with an outstanding combination strength toughness. The distinct lifetimes binding strengths in...

Abstract Crosslinked high‐performance polymers have many industrial applications but are difficult to recycle. Visual detection of the physical properties crosslinked is useful, achieve. The (SPIN) constructed by using cation–π interactions. interaction between polymer side chains can be easily installed and removed aqueous treatments at high or low pH, respectively, which endow with a recyclable behavior. Additionally, tensile strength glass transition temperature SPIN films could visually...

Abstract Bubble breakup in a four‐branched microchannel with carboxymethyl cellulose (CMC) solution was investigated by an improved coupled level set and volume of fluid (CLSVOF) method based on consideration the rheological characteristic fluid. The validity numerical approach satisfactorily verified comparing experimental results. regime pattern bubble were evaluated analyzing evolution morphology. effects gas velocity, concentration, subchannel width daughter length examined,...

Abstract New experimental data are presented on the coalescence dynamics of twin bubbles at two adjacent nozzles in carboxymethyl cellulose (CMC) solutions. The process was recorded by using a fast video technique and images were then analyzed to evaluate regime, efficiency, patterns bubble coalescence. results reveal that contains four periods spherical expansion, rapid mergence, overall growth, instant departure. efficiency always passes through five stages with gas flow rate; it grows CMC...

Abstract High‐performance graphene/epoxy nanocomposites are desired in many fields. However, the performance of is far from actual demand, and methods reported for preparation need participation environmentally harmful organic solvents. Herein, a novel, facile, green cation–π interaction assisted phase transfer approach developed construction nanocomposites. This strategy includes constructing potassium ion modified reduce graphene oxide (K‐rGO) as nanofiller choosing...

A laser image measurement system has been established to study the problem of dynamic bubble formation from a submerged orifice in two kinds high-viscous fluids, namely Newtonian glycerol aqueous solution and non-Newtonian carboxymethylcellulose (CMC) solutions. The generation process was measured accurately by means He-Ne as light source using beam expanding amplification technology. whole process, including expansion, stretching detachment three stages, characteristics each stage, were...