Hydrophilic domains compose of interlocking cation-π blocks for constructing hard actuator with robustness and rapid humidity responsiveness

Li, Yicheng; Du, Mengqi; Yang, Li; Bao, Yunjia; Xu, Yewei; Yin, Qiang; Lan, Yang; Chang, Guanjun

doi:10.1016/j.cej.2021.128820

Cited by 12 publications

(2 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This actuator is required to open when exposed to rain-water. In literature, various approaches to manufacture such actuators are discussed by Ma et al (2013) , Arazoe et al (2016) , Li et al (2021) and Ji et al (2014) . For example, Mu et al (2018) took advantage of the nanoscale molecular channels and vapor-absorbing functional groups present in Nafion, which is a commercial perfluorosulfonic acid ionomer film, to fabricate vapor-driven actuators.…”

Section: Introductionmentioning

confidence: 99%

Transient bio-inspired gliders with embodied humidity responsive actuators for environmental sensing

Wiesemüller

Meng

et al. 2022

Front. Robot. AI

View full text Add to dashboard Cite

Collecting temporal and spatial high-resolution environmental data can guide studies in environmental sciences to gain insights in ecological processes. The utilization of automated robotic systems to collect these types of data can maximize accuracy, resilience, and deployment rate. Furthermore, it reduces the risk to researchers deploying sensors in inaccessible environments and can significantly increase the cost-effectiveness of such studies. The introduction of transient robotic systems featuring embodied environmental sensors pushes towards building a digital ecology, while introducing only minimal disturbance to the environment. Transient robots made from fully biodegradable and non-fossil based materials, do not develop into hazardous e-waste at the end of their lifetime and can thus enable a broader adoption for environmental sensing in the real world. In this work, our approach towards the design of transient robots includes the integration of humidity-responsive materials in a glider, which is inspired by the Alsomitra macrocarpa seed. The design space of these gliders is explored and their behavior studied numerically, which allows us to make predictions on their flight characteristics. Results are validated against experiments, which show two different gliding behaviors, that can help improve the spread of the sensors. By tailoring the Cellulose-Gelatin composition of the humidity actuator, self-folding systems for selective rainwater exposure can be designed. The pH sensing layer, protected by the actuator, provides visual feedback on the pH of the rainwater. The presented methods can guide further concepts developing transient aerial robotic systems for sustainable, environmental monitoring.

show abstract

Section: Introductionmentioning

confidence: 99%

Transient bio-inspired gliders with embodied humidity responsive actuators for environmental sensing

Wiesemüller

Meng

et al. 2022

Front. Robot. AI

View full text Add to dashboard Cite

show abstract

“…The rate of adsorption plays a crucial role in shaping the process design, holding practical importance [44,45]. From Fig.…”

Section: Adsorption Performancementioning

confidence: 99%

One-Step Preparation of Indole-Based Porous Magnetic Composite via Cation-π Interaction-Driven and -Induced Strategy

Mao,

Zhu,

Zhang

et al. 2024

Preprint

Self Cite

View full text Add to dashboard Cite

A strategy driven and induced by cation-π interaction was employed to obtain magnetic porous composite material with a uniform dispersion of ferroferric oxide (Fe3O4). Ferroferric oxide/indole-based porous composite (Fe3O4/PIN) was prepared in a one-step process. Cation-π interaction dispersed iron ions (Fe3+) next to the indole groups in the indole-based porous polymer (PIN), and subsequently, after the in-situ reaction, Fe3O4 was uniformly distributed around the indole groups within PIN. At 298 K, Fe3O4/PIN displayed remarkable adsorption effectiveness, attaining 290.697 mg/g, and within 1 hour, had achieved 74% of the highest capacity. In addition, due to the excellent magnetic properties of Fe3O4/PIN, it exhibited rapid recovery characteristics for TNT. Despite five cycles of adsorption-desorption, with acetone as the eluent, the adsorption capacity of Fe3O4/PIN for TNT still remains at 90% of its highest potential. Hence, Fe3O4/PIN is anticipated to serve as an effective adsorbent for TNT. The uniform distribution of Fe3O4 in porous materials through the driving and inducing effects of cation-π is an unprecedented innovation, providing a new perspective and approach for the preparation and application of similar composite materials.

show abstract

Force‐Reversible and Energetic Indole‐Mg‐Indole Cation‐π Interaction for Designing Toughened and Multifunctional High‐Performance Thermosets

et al. 2021

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

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, the authors report a supramolecular approach for the design of tough high-performance thermosets by using noncovalent sandwich-structural indole-Mg-indole complexes that act as the force-reversible and energetic crosslinking points, evading the inherent tradeoff between mechanical strength and ductility for high-performance thermosets. Compared to traditional epoxy polymer materials, the indole-Mg-indole crosslinks of the network enables synchronously enhancement of mechanical strength and ductility owing to the increased interaction-energy and efficient dissociation and reassociation behaviors given by the dynamic indole-Mgindole complexes, which is quite challenging to achieve by conventional chemical methods. In addition, local manipulation of crosslinking confers the resulting thermosets with multiple fast stimuli-responsive functions, such as recyclability, healability, and adhesion.

show abstract

Hydrophilic domains compose of interlocking cation-π blocks for constructing hard actuator with robustness and rapid humidity responsiveness

Cited by 12 publications

References 53 publications

Transient bio-inspired gliders with embodied humidity responsive actuators for environmental sensing

Transient bio-inspired gliders with embodied humidity responsive actuators for environmental sensing

One-Step Preparation of Indole-Based Porous Magnetic Composite via Cation-π Interaction-Driven and -Induced Strategy

Force‐Reversible and Energetic Indole‐Mg‐Indole Cation‐π Interaction for Designing Toughened and Multifunctional High‐Performance Thermosets

Contact Info

Product

Resources

About