JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Fang Wang,Zhuang Liu,Lin-Bing Zou,Rui Xie,Xiao-Jie Ju,Wei Wang,Da-Wei Pan,Liang-Yin Chu
In this study, a universal model is developed for describing the responsive performances of both positively and negatively responsive smart gating membranes with structural and responsive parameters. The model is derived by assigning the membrane pore size change ratio before and after immobilizing responsive gates and the volume change coefficient as well as the stacking effect coefficient of responsive gates as independent dimensionless variables. The reliability and fitting precision of the proposed model have been validated by the experimental results of positively thermo-responsive and negatively Pb 2+ -responsive gating performances of smart gating membranes, which are prepared by immobilizing poly( N -isopropylmethacrylamide- co -4-acrylamidobenzo-18-crown-6) (PNMB) microgels in porous poly(ether sulfone) (PES) membranes as functional gates that exhibit both thermo-induced shrinking and Pb 2+ -induced swelling responsive characteristics. All the experimental data of both positively and negatively responsive gating performances of smart gating membranes fit well with the developed model. The proposed model provides new insights for describing and explaining the responsive gating performances of both positively and negatively responsive smart gating membranes, and offers rational guidelines for designing and fabricating smart gating membranes with desired responsive gating performances by predetermining the structural and responsive parameters of smart gates for various applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2025
·
IF 11.6
Tianhao Zhang,Junjie Fan,Wenxiu Qiu,Xinyu Yuan,Jianwen Hu,Haotian Gao,Wenqing Xie,Chunling Li,Shuangqing Sun,Songqing Hu
This study reports the development of two pH-responsive Pickering emulsifiers utilizing carbon dots (CDs) as the core component. Both emulsifiers were fabricated via a post-synthetic method, involving the grafting of poly[2-(dimethylamino)ethyl methacrylate] (PDMAEMA) onto the surface of CDs to create CD-based emulsifier. Notably, despite employing an identical synthetic route, the two CD-based emulsifiers exhibit markedly distinct pH-responsive behaviors. The findings demonstrate that both CD-based emulsifiers effectively stabilize Pickering emulsions, and their emulsification and demulsification behaviors can be precisely controlled by adjusting the pH, displaying excellent reproducibility in their pH-responsive performance. To elucidate the underlying reason for this differing pH-responsiveness, the concept of hydrophilic-lipophilic balance (HLB) was introduced. The analysis of the HLB values of the two CD-based emulsifiers revealed that their hydrophilic-lipophilic properties exhibit opposite trends under differing pH conditions, contributing to their contrasting pH-responsive behaviors. This study not only lays a fundamental basis foundation and offers guidance for further research and applications of CD-based smart-responsive emulsifiers but also presents novel insights into design and development of more intelligent and functional emulsifying agents. Moreover, owing to the enhanced fluorescence characteristics of CDs, these pH-responsive emulsifiers hold significant potential for interdisciplinary applications, such as oil and gas exploration and fluorescent labelling.
研究领域:
材料科学
·
化学工程
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY
·
2021
·Vol. 102
·期 1
·109-116
·
IF 1.633
Ma Mingfang,He Zirui,Zhou Shumin,Liu Xuyan,Zhao Min,Wang Xinyan,Liu Huan,Hao Aiyou
Abstract Even through gels based on the polymer modified with β-cyclodextrin have been researched widely, there are only few studies focus on gels based on β-cyclodextrin directly. In this study, we report a novel smart responsive β-cyclodextrin/graphene oxide hybrid gel. Graphene oxide can be loaded into the network of β-cyclodextrin gel successfully by co-assembly method, which can be supported by transmission electron microscope and scanning electron microscope. Hydrogen bonding is the main driving force in gel formation from fourier transform infrared spectroscopy and X-ray diffraction analysis. More interesting is that β-cyclodextrin/graphene oxide hybrid gel can respond to multiple stimuli sensitively. The change of temperature can induce the formation and deformation of gel reversibly. Besides, gel will collapse with the addition of different metal ions including Na + , K + , Zn 2+ , Ba 2+ and Fe 3+ . Hence, this composite gel is a smart responsive material, may have great potential applications in intelligent material fields. Graphic Abstract
In this study, we report a
novel smart responsive β-cyclodextrin/graphene oxide hybrid gel. Graphene oxide
can be loaded into the network of β-cyclodextrin gel successfully by
co-assembly method, which can be supported by transmission electron microscope
and scanning electron microscope. Hydrogen bonding is the main driving force in
gel formation from fourier transform infrared spectroscopy and X-ray
diffraction analysis. More interesting is that β-cyclodextrin/graphene oxide
hybrid gel can respond to multiple stimuli sensitively. The change of
temperature can induce the formation and deformation of gel reversibly.
Besides, gel will collapse with the addition of different metal ions including
Na + , K + , Zn 2+ , Ba 2+ and Fe 3+ .
Hence, this composite gel is a smart responsive material, may have great
potential applications in intelligent material fields.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2020
·
IF 14.588
Zhongwu Bei,Yang Lei,Rui Lv,Yuan Huang,Yangwei Chen,Chao Zhu,Shaojun Cai,Dong Zhao,Qingliang You,Yiping Cao,Xianzheng Zhang
Room-temperature self-healing and self-growing of the exoskeleton with aligned structures in insects has few analogs in synthetic materials. Insect cuticle, such as elytra in beetles, with a typical lightweight lamellar structure, has shown this capability, which is attributed to the accumulation of phenol oxidase with polyphenol and amine-rich compounds in the hard cuticle. In this study, laminar-structure-based intelligence is imitated by incorporating adaptable and growable pyrogallol (PG)-borax dynamic-covalent bonds into a poly(acrylamide)-clay network. The events that lead to crack formation and water accumulation quickly trigger the deprotection of PG. Subsequently, atmospheric O2, as a regeneration source, activates PG oxidative self-polymerization. Multiple permanent and dynamic cross-links, with the involvement of the sacrificed borax, and initiation of a series of intelligent responses occur. The fabricated composites with an aligned lamellar structure exhibit outstanding characteristics, such as air/water-triggered superstrong adhesion, self-repairing, self-sealing and resealing, and reprocessing. Moreover, the strategy endows the composites with a self-growing capability, which leads to a 4- to 10-fold increase in its strength in an outdoor climate (up to 51 MPa). This study could lead to advances in the development of air/water-responsive composite materials for applications such as adaptive barriers.
研究领域:
材料科学
·
仿生学
·
生物医学工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Dan Xiao,Meng-Ting Zheng,Fang-Juan Wu
In nature, early warning, response, and driver behaviors in different environments are essential for living organisms, which, however, is still a big challenge to be conquered in synthetic materials. Herein, an asymmetrical VGO-CB bilayer film inspired by the dermis of leaves was designed using self-assembled graphene oxide (GO) and vermiculite (V) with cucurbituril (CB). Due to the outstanding of smart fire switching of GO, a highly stable substrate of V and excellent carbon-forming of CB, the designed VGO-CB bilayer film exhibited a highly sensitive fire-warning response (0.20 s). Besides, given the asymmetrical swelling of bilayer structure and supramolecular host–guest of CB, the VGO-CB film not only presented a unique highly sensitive response in solvent vapors, humidity, self-driven, and smart switching, but also revealed controllable swift movement and bending for grabbing double weight. The bio-inspired leaves concept combines a fire alarm, response and self-driven with artificial intelligence, which provides potential applications for smart materials, early warning, and soft robotics.
研究领域:
材料科学
·
仿生学
·
智能材料
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2024
·Vol. 20
·期 34
·2401635
·
IF 13
Gong Cheng,Chao Sui,Weizhe Hao,Jiaxuan Li,Yushun Zhao,Linlin Miao,Guoxin Zhao,Junjiao Li,Yuna Sang,Chenxi Zhao,Lei Wen,Xiaodong He,Chao Wang
Vapor-driven smart Janus materials have made significant advancements in intelligent monitoring, control, and interaction, etc. Nevertheless, the development of ultrafast response single-layer Janus membrane, along with a deep exploration of the smart response mechanisms, remains a long-term endeavor. Here, the successful synthesis of a high-crystallinity single-layer Covalent organic framework (COF) Janus membrane is reported by morphology control. This kind of membrane displays superior mechanical properties and specific surface area, along with excellent responsiveness to CH 2 Cl 2 vapor. The analysis of the underlying mechanisms reveals that the vapor-induced breathing effect of the COF and the stress mismatch of the Janus structure play a crucial role in its smart deformation performance. It is believed that this COF Janus membrane holds promise for complex tasks in various fields.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBON
·
2022
·
IF 11.307
Peijun Xu,Jing Hou,Jingqi Cheng,Xiaoming Chen,Jie Zhang,Wenlong Zhang,Ping Li,Shanglin Gao
Carbon fibers have been manufactured industrially for several decades and are widely used in the construction of aircraft, racing cars or sports appliances et al. However, carbon fiber showing no response and adaptation to environmental stimulation has prevented the widespread use of this excellent mechanical reinforcement as functional material . Here, we demonstrate that carbon fibers have not only excellent mechanical properties but also intelligent properties with color responsiveness. We coated graphene oxide (GO) on carbon fiber surface, where the two-dimensional GO orderly stack together and self-assemble as a lamellar stacked structure. Such self-assemble GO film exhibits structural color since the stacked structure is analogous to one-dimensional photonic crystals . Specifically, color carbon fiber with GO one-dimensional photonic crystal coating (colored-CF) is realized for the first time by uniformly surface depositing with vacuum filtration method. We further investigated the colored-CF's intelligent color response and associated coloring mechanism, as well as its microstructure, tensile mechanical properties. The results show that GO coating can repair the surface defects of carbon fiber and improve its specific tensile strength and modulus. Moreover, we found that the colored-CF has interesting characteristics of color response under different solvents, temperature and stress. Our approach gives inspiration for a future design of intelligent responsive carbon fiber composite materials.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
Laser & Photonics Reviews
·
2024
·
IF 9.8
Xiangyu Zhang,Zhigang Wang,Chunlong Xu,Dangli Gao,Qing Pang,Jie Xu,Xiaojun Wang
Persistent phosphor as a printing anti-counterfeiting material has attracted strong attention owing to its inherent luminescent decay process and multi-mode luminescence characteristics under external field stimulation. However, the dynamic persistent luminescence (PersL) pattern of a single material is only manifested in color changes and still faces the problem of being easily decrypted. Herein, a multi-color luminescent material with a wide range distribution of traps is developed, which can emit strong white PersL. In addition, the phosphors show an intelligent response of thermo-stimulated luminescence to ambient temperature via recalling the charging temperature of the traps. The PersL mechanism is proposed based on electron transfer between PbO 6 and TbO 6 octahedrons through the O bridging. Based on the intelligent response of thermo-stimulated luminescence to temperature, high-throughput multi-channel luminescence anti-counterfeiting can be achieved on a single phosphor recording layer. This study not only provides further insights into the PersL mechanism, but also opens a new door for constructing intelligent responsive anti-counterfeiting materials.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
InfoMat
·
2024
·
IF 22.7
Hongwei Zhou,Ying Lin,Yongzhen Ma,Luyao Han,Zhixin Cai,Yan Cheng,Qibin Yuan,Wenhuan Huang,Haibo Yang,Renchao Che
Developing intelligent electromagnetic wave (EMW) absorption materials with real-time response-ability is of great significance in complex application environments. Herein, highly compressible Fe@CNFs@Co/C elastic aerogels were assembled through the electrospinning method, achieving EMW absorption through pressure changes. By varying the pressure, the effective absorption bandwidth (EAB) of Fe@CNFs@Co/C elastic aerogels shows continuous changes from low frequency to high frequency. The EAB of Fe@CNFs@Co/C elastic aerogels is 14.4 GHz (3.36–17.76 GHz), which covers 90% of the range of S/C/X/Ku bands. The theoretical simulation indicates that the external pressure prompts a reduction in the spacing between the fiber layers in the aerogels and facilitates the formation of a 3D conductive network with enhanced attenuation ability of EMW. The uniform distribution of metal particles and appropriate layer spacing can effectively optimize the impedance matching to achieve the best EMW absorption performance. This work state clearly that the hierarchically assembled elastic aerogels composed of metal–organic frameworks (MOFs) derivatives and carbon fibers are ideal dynamic EMW absorption materials for intelligent EMW response.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
Science Advances
·
2023
·Vol. 9
·期 5
·
IF 13.6
Ying Zhang,Le Yu,Xu-Dong Zhang,Ya-Hui Wang,Chunpeng Yang,Xiaolong Liu,Wen-Peng Wang,Yu Zhang,Xue-Ting Li,Ge Li,Sen Xin,Yu-Guo Guo,Chunli Bai
Safety concerns related to the abuse operation and thermal runaway are impeding the large-scale employment of high-energy-density rechargeable lithium batteries. Here, we report that by incorporating phosphorus-contained functional groups into a hydrocarbon-based polymer, a smart risk-responding polymer is prepared for effective mitigation of battery thermal runaway. At room temperature, the polymer is (electro)chemically compatible with electrodes, ensuring the stable battery operation. Upon thermal accumulation, the phosphorus-containing radicals spontaneously dissociate from the polymer skeleton and scavenge hydrogen and hydroxyl radicals to terminate the exothermic chain reaction, suppressing thermal generation at an early stage. With the smart risk-responding strategy, we demonstrate extending the time before thermal runaway for a 1.8-Ah Li-ion pouch cell by 100% (~9 hours) compared with common cells, creating a critical time window for safety management. The temperature-triggered automatic safety-responding strategy will improve high-energy-density battery tolerance against thermal abuse risk and pave the way to safer rechargeable batteries.
研究领域:
材料科学
·
能源技术
·
化学工程
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2024
·
IF 3.7
Shihao Gu,Mei Liu,Renle Xu,Xu Han,Yuhang Lou,Yue Kong,Yanqing Gao,Shibin Shang,Zhanqian Song,Jie Song,Jian Li
The exploration of environmentally friendly, less toxic, sustained-release insecticide is increasing with the growing demand for food to meet the requirements of the expanding population. As a sustained-release carrier, the unique, environmentally friendly intelligent responsive hydrogel system is an important factor in improving the efficiency of insecticide utilization and accurate release. In this study, we developed a facile approach for incorporating the natural compound rosin (dehydroabietic acid, DA) and zinc ions (Zn2+) into a poly(N-isopropylacrylamide) (PNIPAM) hydrogel network to construct a controlled-release hydrogel carrier (DA-PNIPAM-Zn2+). Then, the model insecticide avermectin (AVM) was encapsulated in the carrier at a drug loading rate of 36.32% to form AVM@DA-PNIPAM-Zn2+. Surprisingly, the smart controlled carrier exhibited environmental responsiveness, strongly enhanced mechanical properties, self-healing ability, hydrophobicity, and photostability to ensure a balance between environmental friendliness and the precision of the drug release. The release experiments showed that the carboxyl and amide groups in the polymer chains alter the intermolecular forces within the hydrogel meshes and ingredient diffusion by changing temperatures (25 and 40 °C) and pH values (5.8, 7.4, and 8.5), leading to different release behaviors. The insecticidal activity of the AVM@DA-PNIPAM-Zn2+ against oriental armyworms was good, with an effective minimum toxicity toward aquatic animals. Therefore, AVM@DA-PNIPAM-Zn2+ is an effective drug delivery system against oriental armyworms. We anticipate that this ecofriendly, sustainable, smart-response carrier may broaden the utilization rosin and its possible applications in the agricultural sector.
研究领域:
农业科学
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Dan Xiao,Xue-Min Yang,Jin-Xiang Lv,Meng-Ting Zheng,Qian-Ting Wang,Kathrin Harre
Aiming to endow natural minerals with fast, high-sensitivity, and controllable smart light, humidity, solvent and temperature responsiveness, a novel ceramic clay and cucurbituril (CB) guest-host system (MVCB) inspired by nature was self-assembled and rearranged via an ingenious and simple design successfully. For the first time, the multi-functional MVCB not only displayed a high intelligent multi-stimuli responsiveness as light, humidity, solvent, and temperature switches, but also had multiple selective molecular recognition responses because of different organic vapor with CB and asymmetrical bilayer clay. For instance, due to the factors of guest-host and slow release, the average response speed of self-assembled shuffling the MVCB in methanol was as high as 108°/s compared with bilayer film without CB (20°/s). Besides, the MVCB exhibited controllable swift movement and was bending for grabbing three times its own weight. Moreover, the ultra-wide operating temperature of the MVCB from was ranging −196 to 300 °C under extreme condition. More interestingly, the MVCB presented a unique and compliable self-driven, smart switch, shape memory, environmental awareness and soft robotic gripper owing to the asymmetrical swelling and supramolecular of the CB. This work not only brings a simple, cost-effective, large-scale, and efficient strategy for multi-functionalized natural minerals materials, but also opens potential applications for intelligent response, extremely resistant substances, energy conversion and soft robotics.
研究领域:
材料科学
·
化学
·
智能材料
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）