Dynamic covalent polymer networks crosslinked through Diels–Alder (DA) reactions are promising self-healing, 3D-printable materials that have the unique ability to reshuffle their dynamic bonds in solid state. Here, we identify main parameters control furan/maleimide-based DA network and relate them shape reconfigurability. Thermodynamics of were dominated by entropic effects, with more flexible crosslinkers leading higher bond dissociation temperatures. Furthermore, fraction endo vs exo...

Shape stabilization of inorganic salt hydrate phase change materials (PCMs) above their melting point is required to overcome the leakage problem in molten state. However, previous strategies designing...

Dynamic covalent boronate ester salogels as novel thermal energy storage materials shape stabilize >96 wt% Ca(NO 3 ) 2 ·4H O. Thermo-reversible bonds allow on-demand destruction of the gel to facilitate filling and removal from modules.

Nonviral methods have been explored as the replacement of viral systems for their low toxicity and immunogenicity. However, they yet to reach levels competitive counterparts. In this paper, we combined physical chemical improve performance polyplex delivery DNA small interfering RNA. Specifically, gold nanoparticles (AuNPs) were used carry (a approach) while electroporation was applied fast direct cytosolic delivery. hybrid approach, cationic polymer molecules condense and/or protect genetic...

Molten inorganic salt hydrates as unique solvents for polymers and the application of polymer gels thermal energy storage are highlighted.

One of the challenges preventing wide use inorganic salt hydrate phase change materials (PCMs) is their low viscosity above melting point, leading to leakage, segregation, and separation from heat exchanger surfaces in thermal management applications. The development a broad strategy for using polymers that provide tunable, temperature-reversible shape stabilization variety hydrates by lowest possible polymer concentrations hindered differences solubility gelation behavior with type ion....

Visualizing single DNA dynamics in flow provides a wealth of physical insights biophysics and complex study. However, large signal fluctuations, generated from diversified conformations, deformation history dependent induced stochastic tumbling, often frustrate its wide adoption molecule polymer We use hybrid field microfluidic (HFM) approach, which an electric is imposed at desired locations appropriate moments to balance the stress on charged molecules, effectively regulate initial...

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The intrinsic reversibility of dynamic covalent bonding, such as the furan-maleimide Diels-Alder (DA) cycloaddition reactions, enables reprocessable, self-healing polymer materials that can be reconfigured via mechanism solid-state plasticity. In this work, temperature-dependent exchange rates stereochemically distinct endo and exo DA bonds are leveraged to achieve tunable, temperature- stress-activated shape morphing in (DAP) networks. Through thermal annealing, ≈35% isomers converted neat...

A novel flow-guided assembly approach is presented to accurately align and position nanowire arrays in pre-defined locations with high throughput large-scale manufacturing capability. In this approach, a polymer solution first filled an array of microfluidic channels. Then gas flow introduced blow out most the while pushing little leftover against channel wall for into nanowires. way, highly ordered nanowires are conveniently aligned direction patterned along both sides microchannels. study,...

Herein, we present a new flow-guided assembly approach to align and position DNA nanowires. Single or multiple drops of λ-DNA solution were loaded from one side template with micropad array blown off by air flow. molecules aligned along the flow direction well positioned under guiding pre-defined micropatterns. Different other pioneering work, focused on investigating quality, reliability appropriateness for large-scale manufacturing. We correlated quality (alignment, patterning surface...