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General Strategy for Making CO2-Switchable Polymers.
By discovering that poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA) in water can react with carbon dioxide (CO2) and have its lower critical solution temperature (LCST) reversibly tuned by
Toward Photocontrolled Release Using Light-Dissociable Block Copolymer Micelles
Two studies of light-responsive micellar aggregates of small-molecule surfactants suggest that any chromophores whose photoinduced structural rearrangements gives rise to a significant change in dipole moment could be used in designing light-dissociable BCP micelles based on the same principle.
Tunable Photocontrolled Motions Using Stored Strain Energy in Malleable Azobenzene Liquid Crystalline Polymer Actuators
The approach of prestoring a controllable amount of strain energy to obtain a strong and tunable photoinduced mechanical force in azobenzene LCN can be further explored for applications of light-driven polymer actuators.
Liquid‐Crystalline Dynamic Networks Doped with Gold Nanorods Showing Enhanced Photocontrol of Actuation
Versatile and complex motions enabled by the enhanced photocontrol of actuation are demonstrated, including plastic "athletes" that can execute light-controlled push-ups or sit-ups, and a light-driven caterpillar-inspired walker that can crawl forward on a ratcheted substrate at a speed of about 13 mm min-1.
Near-infrared light-triggered drug release from UV-responsive diblock copolymer-coated upconversion nanoparticles with high monodispersity.
The preparation of a new near-infrared (NIR) light-responsive nanocarrier for controlled drug release is demonstrated and the diblock copolymer self-assembly-based approach is general and offers possibilities for photocontrolled drug delivery.
One-Pot Synthesis of Brush Diblock Copolymers through Simultaneous ATRP and Click Coupling
Among polymers with controlled and more complex architectures, brush diblock copolymers (brush-1-block-brush-2) have received increasing attention. 9 They are basically two different molecular
A new design for light-breakable polymer micelles.
Upon UV light irradiation of polymer micellar solutions, the photosolvolysis of pyrene moieties results in their detachment from the polymer and converts the hydrophobic PPy block into hydrophilic poly(methacrylic acid).
How can azobenzene block copolymer vesicles be dissociated and reformed by light?
The study suggests a specific design principle for obtaining UV light-dissociable and visible light-recoverable vesicles based on azobenzene block copolymers that ensures a significant increase in polarity of the hydrophobic block under UV light irradiation.
Block copolymer micelles with a dual-stimuli-responsive core for fast or slow degradation.
A new amphiphilic ABA-type triblock copolymer whose hydrophobic middle block contains two types of stimuli-sensitive functionalities regularly and repeatedly positioned in the main chain, which react to reducing agents and light, respectively.
Biomimetic Locomotion of Electrically Powered “Janus” Soft Robots Using a Liquid Crystal Polymer
Electrically driven soft robots capable of executing various types of biomimetic locomotion are reported, which are built from a single piece of the material and has two parts undergoing opposite deformations simultaneously under a uniform stimulation.