Biocompatible fluorescent organic nanoparticles with tunable photoluminescence were prepared via the one-pot oxidation of polydopamine and subsequently utilized for cell imaging.

Making dynamic three-dimensional (3D) structures capable of reversible shape changes or locomotion purely out dry polymers is very difficult. Meanwhile, no previous 3D can be remade into new configurations while being resilient to mechanical damages and low temperature. Here, we show that light-activated transesterification in carbon nanotube dispersed liquid crystalline vitrimers enables flexible design easy building flat films upon irradiation light without screws, glues, molds. Shining...

Assembling epoxy, one of the most common and widely used thermosets, by welding with remote control is extremely difficult has not been realized so far, as epoxy cannot melt or be dissolved. Here we present a very simple but highly efficient solution exploring photothermal effect carbon nanotubes (CNTs) to manipulate transesterification reaction in vitrimers. The nanotube dispersed vitrimer presented here can welded light within seconds minutes. Moreover, various CNT–vitrimer materials...

A self-floating sturdy polymer foam which by itself enables efficient solar steam generation without optical concentration.

Hot-pressing shape memory vitrimers lead to multishape memory, multifunctionality, easy reconfiguration, and the possibility of mass production arbitrary smart structures. Shape polymers (SMPs) are able recover their original shapes from preprogrammed temporary upon application external stimuli. The current booming SMPs is greatly encouraged by existing emerging applications in many areas such as aircrafts, electronics, biomedical devices.1-12 Most can remember only one shape, resulting dual...

Introducing oligoaniline into a vitrimer resulted in smart material that simultaneously responds to six different stimuli and performs functions.

Vitrimers are one kind of covalently crosslinked polymers that can be reprocessed. Topology freezing transition temperature (Tv) is vitrimer's upper limit for service and lower recycle. However, there has been no proper method to detect the intrinsic Tv till now. Even worse, current testing methods may lead a misunderstanding vitrimers. Here we provide sensitive universal by doping or swelling aggregation-induced-emission (AIE) luminogens into The fluorescence AIE-luminogens changes...

Abstract Stimuli‐responsive materials offer a distinguished platform to build tether‐free compact soft robots, which can combine sensing and actuation without linked power supply. In the past, tubular robots have be made by multiple components with various internal channels or complex cavities assembled together. Moreover, robust processing, locomotion, simple structure, easy recyclability represent major challenges in this area. Here, it is shown that those tackled liquid crystalline...

Liquid-crystalline elastomers (LCEs) are excellent soft actuator materials for a wide range of applications, especially the blooming area robotics. For entirely LCE robots to exhibit high dexterity and complicated performance, several components typically required be integrated together in one single robot body. Here, we show that seamless multicomponent/multimaterial three-dimensional (3D) can created via simultaneously welding aligning with different chemical compositions physical...

Reprogrammable magneto-responsive soft actuators capable of working in enclosed and confined spaces adapting functions under changing situations are highly demanded for new-generation smart devices. Despite the promising prospect, realization versatile morphing modes (more than bending) local magnetic control remains challenging but is crucial further on-demand applications. Here, we address challenges by maximizing unexplored potential magnetothermal responsiveness covalent adaptable...

The biomedical applications of aniline oligomers and their derivatives have attracted increasing interest due to electroactive biodegradable properties. However, no reports systematically examined the toxicity these materials, which has severely hindered applications. In this work, cellular responses including dimer, trimer tetramer mouse embryo fibroblast (NIH-3T3) cells adenocarcinomic human alveolar basal epithelial (A549) were determined compared for first time. Our results demonstrated...

A new main-chain liquid crystalline polymer with pyrene end-caps is developed to greatly facilitate dispersion of carbon nanotubes in organic solvents. It also helps stabilize the bulk a elastomer matrix, where tubes are aligned along director axis. We use THz spectroscopy characterize nanotube alignment and demonstrate photo-actuation response composite. Detailed facts importance specialist readers published as ”Supporting Information”. Such documents peer-reviewed, but not copy-edited or...

It is extremely challenging, yet critically desirable to convert 2D plastic films into 3D structures without any assisting equipment. Taking the advantage of solvent-induced bond-exchange reaction and elastic-plastic transition, shape programming flat vitrimer polymer sheets offers a new way obtain or topologies, which are hard for traditional molding achieve. Here we show that such can be achieved with pipette, hair dryer, bottle solvent. The used here very similar commercial epoxy, except...

Simple dip-coating transforms thermally responsive shape memory polymers into photo-responsive materials and allows for engineering surface functionalization.

Thermal reprogrammability is essential for new-generation large dry soft actuators, but the realization sacrifices favored actuation performance. The contradiction between thermal and stability hampers efforts to design high-performance actuators be robust thermally adaptable. Now, a strategy has been developed that relies on repeatedly switching on/off in liquid-crystalline elastomer (LCE) resolve this problem. By post-synthesis swelling, latent siloxane exchange reaction can induced common...

Achieving 3D structures that can be reversibly formed from dry 2D polymer films is useful for the development of suitable smart materials capable converting an external stimulus into a mechanical response.

A vitrimer-based LCE actuator subtly mitigates the conflict between processability and actuation durability by reducing catalyst content.