Small
·
2023
·
IF 13.3
Liangying Jia,Jing Xiao,Yu Tan,Kaiqiang Zhang,Yaqing Liu,Xu Wang
The capacity to self-detect and locate damage to underwater infrastructure in emergencies is vital, as materials and technologies that securely facilitate energy and information transmission are crucial in several fields. Herein, the development of a multifunctional supramolecular ionogel (SIG) and SIG-based devices for use in detecting and locating damage to underwater infrastructure is reported. The SIG is fabricated via the single-step photoinitiated copolymerization of hydroxy and fluorinated monomers in a fluorinated ionic liquid. Hydrogen-bond/ion-dipole-interaction synergy ensures that the SIG is highly ionically conductive and extremely mechanically strong, with underwater self-healing and adhesion properties. It can be used as an underwater ionic cable to provide reporting signals via changes in strain; furthermore, SIG-based devices can be fixed to underwater infrastructure to locate damage via resistance monitoring. The SIG can also be attached to the human body for use in underwater communication, thereby safeguarding maintenance personnel while repairing underwater infrastructure. This study provides a novel pathway for developing supramolecular materials and devices.
研究领域:
材料科学
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海洋工程
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生物医学工程
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Teng Li,Xueliang Zhang,Wei Yu,Sijun Liu
The rapid development of wearable devices and soft robotics has an urgent demand for polymer conductors with a switchable adhesion property. Herein, we report a supramolecular ionogel (SIG) that can reversibly switch between adhesion and debonding to various substrates. The on/off switchable adhesion of SIG is attributed to phase separation induced by the aggregation of polymer chains and the formation of a lubricating layer, which impairs the contact between polymer chains and substrates, thus weakening interfacial interaction. The phase separation ionogel (PSIG) is highly sensitive to humidity, leading to the debonded PSIG instantly transforming into the adhesion-hydrated ionogel (HIG) owing to the disruption of phase structure. Based on the switchable adhesion property, this multiresponsive ionogel shows potential applications as a fire alarm and intelligent conductive tape. This work provides a simple method for developing a switchable adhesion ionic polymer conductor and broadens the application of the ionogel in flexible devices.
研究领域:
材料科学
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柔性电子
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智能材料
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产品关联
DOI
PubMed
高影响因子
MACROMOLECULAR MATERIALS AND ENGINEERING
·
2022
·Vol. 307
·期 10
·2200248
·
IF 4.402
Jia Yang,Jianghuan Fan,Zhuangzhuang Liu,Bin Zhang,Gang Qin,Shuzheng Liu,Xinlei Shi,Lin Zhu,Gengzhi Sun,Qiang Chen
Hydrogels are widely used in electronic devices due to their excellent properties. However, traditional hydrogels have problems such as freezing at low temperature and loss of water. Herein, a super-stretchable, tough, self-healing, and transparent supramolecular ionogel is fabricated by polymerizing N -hydroxyethyl acrylamide in deep eutectic solvent (DES) without chemical cross-linkers. The ionogel shows good self-recovery and excellent fatigue resistance. Due to the use of DES without water, the prepared ionogel has low-temperature resistance and environmental stability. Furthermore, the ionogel can be used as a strain sensor to monitor human movement, even at low temperatures. Therefore, this work provides a simple and promising strategy for designing DES-based ionogels with freeze resistance and environmental stability.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Lianmin Chen,Mingyu Guo
In this work, we report the easy fabrication of highly transparent (optical transmittance above 93%), stretchable (1500–2500% elongation at break), and conductive (up to 2.25 S m–1 at 25 °C) supramolecular ionogels that simultaneously integrate with three-dimensional (3D) printable, healable, adhesive, and recyclable character. The supramolecular ionogel is designed using a linear amphiphilic poly(urethane-urea) (PUU) copolymer and ionic liquid (IL) as the elastic scaffold and electrolyte, respectively, via a simple cosolvent method. Intriguingly, the 3D-printed highly conductive (2.25 S m–1 at 25 °C) supramolecular ionogel structure shows record-high mechanical performance with a breaking tensile strain and stress of 945% and 1.51 MPa, respectively, and is able to lift 3400× or bear 10000× its weight without fracture. Furthermore, both the solution casting and 3D-printed ionogel films show high sensitivity and reliability for sensing a wide range of strains, including various human motions. The results present some new insights into the structural, mechanical, and functional design of novel multifunctional ionogels with distinguished mechanical performance and tractable processability, which will extend them to a wide range of flexible electronic applications, including artificial intelligence, wearable/conformable electronics, human/machine interactions, soft robotics, etc.
研究领域:
材料科学
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柔性电子
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智能材料
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产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2017
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IF 3.833
Aoli Wu,Fei Lu,Panpan Sun,Xuanxuan Qiao,Xinpei Gao,Liqiang Zheng
Supramolecular ionogels were prepared by self-assembly of small molecules through host–guest interaction between β-cyclodextrin (β-CD) and a room-temperature ionic liquid (IL) 3-(1-methyl-3-imidazolio)propanesulfonate-lithium bis(trifluoromethanesulfonyl)imide (MIPS-LiTFSI) which contains zwitterion MIPS. 19F NMR and 2D ROESY 1H NMR have been used to prove that only TFSI– is involved in the complexation. 1H NMR, FT-IR, and comparative tests indicated that the electrostatic interaction between imidazole cation and TFSI– anion and intermolecular hydrogen bonding between three compounds also contribute to the formation of supramolecular ionogel. Ionogels with different gel–sol phase transition temperatures can be obtained by adjusting the molar ratio between β-CD and MIPS-LiTFSI. In addition, the supramolecular ionogels composed of “channel type” structural β-CD have been constructed. The ionogel with high conductivity and low activation energy open a door to new fields for special applications.
研究领域:
材料科学
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化学
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产品关联
DOI
PubMed
高影响因子
GREEN CHEMISTRY
·
2023
·Vol. 26
·期 2
·979-991
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IF 9.8
Shipeng Chen,Jinping Wang,Li Feng,Zebin Song,Xiaoji Wang,Yubin Ke,Lin Hua,Yange Fan,Zheng Li,Yimin Hou,Baoyu Xue,Luke Liu
To prevent the entry of toxic sulphur-containing contaminants into the atmosphere, extractive desulphurization of fuels with an ionic liquid (IL) as an extractor is a benign and efficient strategy, as compared with traditional hydrodesulphurization. However, ILs have some drawbacks like toxicity, non-biodegradability, low recyclability, and partial solubility in the fuel (leading to contamination), which limit their practical applications. Supramolecular ionogels, obtained from the gelation of ILs, not only retain the desulphurization function of ILs, but also prevent the leakage and achieve the renewable utilization of ILs. Hence, they are effective in overcoming the abovementioned limitations. Herein, a series of efficient D-gluconic acetal-based gelators (NG6, 12, 18 and NGO18) that can harden four different ILs at low concentrations was developed. They were thermally reversible and stable at room temperature with self-healing properties. The gelation and self-healing mechanisms of these gels were also systematically investigated. Furthermore, their desulphurization capacities in fuel-mimicking solutions of thiophene (T), benzothiophene (BT) and dibenzothiophene (DBT) in hexane were investigated. The effects of the concentration of sulphur compounds, fuel volume and temperature on the efficiency of sulphur removal were studied. Interestingly, the NG18-IL2 ionogel was the best-performing, which showed outstanding mechanical properties and fast and complete self-healing characteristics, along with 40.99, 49.76 and 51.68% removal efficiencies for T, BT and DBT, respectively, and 100% for T, BT and DBT in a multi-stage approach. Additionally, the ionogel could be reused six times and regenerated, all of which make it a low-cost and environment-friendly desulphurization material for practical applications.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
高影响因子
Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 15
·8359-8367
·
IF 11.9
Zong-Ju Chen,Yu-Qiong Sun,Xiong Xiao,Hong-Qin Wang,Min-Hao Zhang,Fang-Zhou Wang,Jian-Cheng Lai,Da-Shuai Zhang,Li-Jia Pan,Cheng-Hui Li
Flexible sensors based on ionogels show great potential in wearable devices because of their compliance and deformability. However, ionogel sensors usually suffer from low mechanical properties and poor sensitivity. Herein, we report a supramolecular ionogel with combined hierarchical dynamic bonds (hydrogen bonds, Zn(II)–carboxylate coordination bonds and Zn–(Al-Hbimcp) (Al-Hbimcp = 2,6-bis((E)-(allylimino)methyl)-4-chlorophenol) coordination bonds) as crosslinking points. The obtained ionogels possess superior mechanical robustness (fracture strength of 21 MPa, Young's modulus of 325 MPa, fracture strain of 1120%, toughness of 102 MJ m−3, fracture energy of 87.7 kJ m−2 and puncture energy of 4570.8 mJ), high ionic conductivity, broad environmental tolerance and self-healing properties. Moreover, inspired by the microstructure and gradient distribution of the finger, we fabricated a soft and hard hybrid bilayer ionogel pressure/temperature sensor with a micro-pyramid structure. The sensor exhibits extraordinary pressure (33.8 kPa−1) and temperature sensitivity (3.79 °C−1), enabling the monitoring function of human heartbeat and breathing. Hence, the designed ionogel sensor has great application prospects in multifunctional flexible wearable devices.
研究领域:
材料科学
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生物医学工程
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化学工程
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产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Jinming Liu,Yiyu Cao,Haiming Chen,Haohao Lin,Dongsheng Mao
A robust and highly responsive pressure-sensitive adhesive (PSA) holds significant importance in interface interaction technology, requiring specific attributes such as a low modulus for surface adhesion, high strength to withstand stress, and responsiveness to external stimuli. However, achieving these requirements is often challenging due to structural limitations. In this study, a series of supramolecular ionogels with quadruple hydrogen bonding cross-linked networks and mobile ions were developed to decouple the modulus-strength relationship, thereby enhancing sensing performance. The quadruple hydrogen bonds cross-linked supramolecular networks exhibit good strength even with an increased ionic liquid content of up to 30 wt %. As a result, impressive lap-shear strengths of 2165.1 kPa on aluminum and tacking bond strengths of 1842.6 kPa on glass were attained, surpassing most of the literature-reported values. Additionally, the movement or orientation of ions under voltage application led to a 69.5% enhancement in the bonded strength. Moreover, the PSA demonstrated stress sensing capabilities, achieving a sensitivity of 32.2 MPa–1 in lap-shear applications and 9.5 MPa–1 in compression scenarios.
研究领域:
材料科学
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聚合物化学
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粘附科学
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传感技术
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）