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A series of twistacene-functionalized dendrimers were successfully synthesized and characterized. They can self-assemble into organic nanoparticles through re-precipitation method and emit blue, cyan, green and red fluorescence in water. These multicolor nanoparticles showed low cytotoxicity and good photostability, which could be used for fluorescence imaging of living cells.
We report a bulk hybrid nanostructured Al alloy with super-high strength at both room and elevated temperatures. The strengthening mechanisms were clearly elucidated, which are mainly attributed to the composite structure and confinement effect between the nano phases. The confining effect can effectively suppress the premature brittle fracture of the nano-intermetallic phases. The microstructural strategy and strengthening mechanisms in this work may be beneficial for the scientific community in understanding and designing high-strength materials.
This study demonstrated that the formation of triazole moieties accompanying with a linker or substituent group(s) having a resonance effect (which can provide a charge stabilization power) by using azide–alkyne click chemistry is a very powerful synthetic route to develop electrical memory polymers with high performances. The memory mode can be further tuned by changing the linker or substituent group(s) in the triazole moiety.
Inspired by multifunctional fish scales with swift stimulus-responsive capabilities, we developed inorganic nanostructured isolated particles and nanostructured coatings with surface morphology that can mimic that of natural fish scales via a facile self-assembly approach. The bio-inspired nanostructures feature tunable light refraction and reflection, tunable surface wettability and damage-tolerant mechanical properties, and provide new insights for developing novel functional materials for ‘smart’ structures and applications.
