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学者姓名：吕晓林
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Abstract ：
Hydrogel thermocells possess great potential in the energy conversion field as they directly absorb waste heat from the environment to drive redox reactions for continuous electricity generation. However, achieving high toughness and good elasticity simultaneously in hydrogel thermocells remains a challenge because of the inherent contradiction of energy dissipation mechanisms, severely limiting their practical applications and lifespan. To address this, a skin-like hydrogel network with a highly dense interwoven network is developed to construct hydrogel thermocells with good elasticity and high toughness. The dense network structure can effectively disperse the stress and hinder crack propagation, thus breaking the contradiction between high toughness and good elasticity. The thermocell realizes a toughness of 460 J m−2 while reaching an elastic limit strain of 350 %, far exceeding the elasticity of previous stretchable hydrogel thermocells. Meanwhile, it exhibits ultra-low hysteresis and excellent fatigue resistance under tensile and compressive cyclic loads. Moreover, the thermocell can work stably over long periods, enabling stable voltage output even under compression, bending, and stretching. In addition, the thermocell can power the LED lamp and calculator, and can also be connected in series to form large arrays, thus rendering it an ideal power source for wearable devices. © 2024 Elsevier B.V.
Keyword ：
Ductile fracture Ductile fracture Elasticity Elasticity Electric loads Electric loads Energy dissipation Energy dissipation Energy utilization Energy utilization Hydrogels Hydrogels Redox reactions Redox reactions Waste heat Waste heat Wearable technology Wearable technology
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| GB/T 7714 | Lyu, Xiaolin , Lin, Ziqing , Huang, Chunzhi et al. Tough and elastic hydrogel thermocells for heat energy utilization [J]. | Chemical Engineering Journal , 2024 , 493 . |
| MLA | Lyu, Xiaolin et al. "Tough and elastic hydrogel thermocells for heat energy utilization" . | Chemical Engineering Journal 493 (2024) . |
| APA | Lyu, Xiaolin , Lin, Ziqing , Huang, Chunzhi , Zhang, Xinyue , Lu, Yang , Luo, Zhong-Zhen et al. Tough and elastic hydrogel thermocells for heat energy utilization . | Chemical Engineering Journal , 2024 , 493 . |
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The rich phase behavior of block copolymers (BCPs) has drawn great attention in recent years. However, the double diamond (DD) phase is rarely obtained because of the competition between the minimization of interfacial energy and packing frustration. Here, a rod-coil BCP containing mesogen-jacketed liquid crystalline polymer is designed to acquire ordered bicontinuous network nanostructures. The reduction of internal energy originating from the orientational interaction among the rod blocks can compensate for the free energy penalty of packing frustration to stabilize the DD structure. The resulting BCP can also experience lamellae-to-DD and double gyroid-to-lamellae transitions by changing the annealing temperature. These results make the rod-coil BCP an excellent candidate for the self-assembly of ordered network structures, demonstrating great potential in nanopatterning and metamaterials. © Chinese Chemical Society Institute of Chemistry, Chinese Academy of Sciences 2024.
Keyword ：
Block copolymers Block copolymers Free energy Free energy Liquid crystals Liquid crystals
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| GB/T 7714 | Lyu, Xiao-Lin , Yang, Shi-Chu , Xiao, An-Qi et al. Ordered Bicontinuous Network Structures Regulated by Orientational Interactions in a Rod-Coil Block Copolymer [J]. | Chinese Journal of Polymer Science (English Edition) , 2024 , 42 (5) : 636-642 . |
| MLA | Lyu, Xiao-Lin et al. "Ordered Bicontinuous Network Structures Regulated by Orientational Interactions in a Rod-Coil Block Copolymer" . | Chinese Journal of Polymer Science (English Edition) 42 . 5 (2024) : 636-642 . |
| APA | Lyu, Xiao-Lin , Yang, Shi-Chu , Xiao, An-Qi , Hou, Ping-Ping , Zhang, Wei , Pan, Hong-Bing et al. Ordered Bicontinuous Network Structures Regulated by Orientational Interactions in a Rod-Coil Block Copolymer . | Chinese Journal of Polymer Science (English Edition) , 2024 , 42 (5) , 636-642 . |
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Ion-conductive elastomers capable of damping can significantly mitigate the interference caused by mechanical noise during data acquisition in wearable and biomedical devices. However, currently available damping elastomers often lack robust mechanical properties and have a narrow temperature range for effective damping. Here, precise modulation of weak to strong ion-dipole interactions plays a crucial role in bolstering network stability and tuning the relaxation behavior of supramolecular ion-conductive elastomers (SICEs). The SICEs exhibit impressive mechanical properties, including a modulus of 13.2 MPa, a toughness of 65.6 MJ m−3, and a fracture energy of 74.9 kJ m−2. Additionally, they demonstrate remarkable damping capabilities, with a damping capacity of 91.2% and a peak tan δ of 1.11. Furthermore, the entropy-driven rearrangement of ion-dipole interactions ensures the damping properties of the SICE remain stable even at elevated temperatures (18–200 °C, with tan δ > 0.3), making it the most thermally resistant damping elastomer reported to date. Moreover, the SICE proves effective in filtering out various noises during physiological signal detection and strain sensing, highlighting its vast potential in flexible electronics. © 2024 Wiley-VCH GmbH.
Keyword ：
damping damping flexible electronics flexible electronics ion-conductive elastomer ion-conductive elastomer mechanical robustness mechanical robustness
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| GB/T 7714 | Shen, S. , Du, Z. , Zhou, P. et al. A mechanically Robust, Damping, and High-Temperature Tolerant Ion-Conductive Elastomer for Noise-Free Flexible Electronics [J]. | Advanced Functional Materials , 2024 , 34 (46) . |
| MLA | Shen, S. et al. "A mechanically Robust, Damping, and High-Temperature Tolerant Ion-Conductive Elastomer for Noise-Free Flexible Electronics" . | Advanced Functional Materials 34 . 46 (2024) . |
| APA | Shen, S. , Du, Z. , Zhou, P. , Zou, Z. , Lyu, X. . A mechanically Robust, Damping, and High-Temperature Tolerant Ion-Conductive Elastomer for Noise-Free Flexible Electronics . | Advanced Functional Materials , 2024 , 34 (46) . |
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Abstract ：
Ion-conductive elastomers capable of damping can significantly mitigate the interference caused by mechanical noise during data acquisition in wearable and biomedical devices. However, currently available damping elastomers often lack robust mechanical properties and have a narrow temperature range for effective damping. Here, precise modulation of weak to strong ion-dipole interactions plays a crucial role in bolstering network stability and tuning the relaxation behavior of supramolecular ion-conductive elastomers (SICEs). The SICEs exhibit impressive mechanical properties, including a modulus of 13.2 MPa, a toughness of 65.6 MJ m(-3), and a fracture energy of 74.9 kJ m(-2). Additionally, they demonstrate remarkable damping capabilities, with a damping capacity of 91.2% and a peak tan delta of 1.11. Furthermore, the entropy-driven rearrangement of ion-dipole interactions ensures the damping properties of the SICE remain stable even at elevated temperatures (18-200 degrees C, with tan delta > 0.3), making it the most thermally resistant damping elastomer reported to date. Moreover, the SICE proves effective in filtering out various noises during physiological signal detection and strain sensing, highlighting its vast potential in flexible electronics.
Keyword ：
damping damping flexible electronics flexible electronics ion-conductive elastomer ion-conductive elastomer mechanical robustness mechanical robustness
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| GB/T 7714 | Shen, Shengtao , Du, Zehang , Zhou, Piaopiao et al. A mechanically Robust, Damping, and High-Temperature Tolerant Ion-Conductive Elastomer for Noise-Free Flexible Electronics [J]. | ADVANCED FUNCTIONAL MATERIALS , 2024 , 34 (46) . |
| MLA | Shen, Shengtao et al. "A mechanically Robust, Damping, and High-Temperature Tolerant Ion-Conductive Elastomer for Noise-Free Flexible Electronics" . | ADVANCED FUNCTIONAL MATERIALS 34 . 46 (2024) . |
| APA | Shen, Shengtao , Du, Zehang , Zhou, Piaopiao , Zou, Zhigang , Lyu, Xiaolin . A mechanically Robust, Damping, and High-Temperature Tolerant Ion-Conductive Elastomer for Noise-Free Flexible Electronics . | ADVANCED FUNCTIONAL MATERIALS , 2024 , 34 (46) . |
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Abstract ：
Hydrogel thermocells possess great potential in the energy conversion field as they directly absorb waste heat from the environment to drive redox reactions for continuous electricity generation. However, achieving high toughness and good elasticity simultaneously in hydrogel thermocells remains a challenge because of the inherent contradiction of energy dissipation mechanisms, severely limiting their practical applications and lifespan. To address this, a skin-like hydrogel network with a highly dense interwoven network is developed to construct hydrogel thermocells with good elasticity and high toughness. The dense network structure can effectively disperse the stress and hinder crack propagation, thus breaking the contradiction between high toughness and good elasticity. The thermocell realizes a toughness of 460 J m- 2 while reaching an elastic limit strain of 350 %, far exceeding the elasticity of previous stretchable hydrogel thermocells. Meanwhile, it exhibits ultra-low hysteresis and excellent fatigue resistance under tensile and compressive cyclic loads. Moreover, the thermocell can work stably over long periods, enabling stable voltage output even under compression, bending, and stretching. In addition, the thermocell can power the LED lamp and calculator, and can also be connected in series to form large arrays, thus rendering it an ideal power source for wearable devices.
Keyword ：
Heat energy utilization Heat energy utilization Thermocell Thermocell Thermoelectric conversion Thermoelectric conversion Thermogalvanic Thermogalvanic Wearable device Wearable device
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| GB/T 7714 | Lyu, Xiaolin , Lin, Ziqing , Huang, Chunzhi et al. Tough and elastic hydrogel thermocells for heat energy utilization [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 493 . |
| MLA | Lyu, Xiaolin et al. "Tough and elastic hydrogel thermocells for heat energy utilization" . | CHEMICAL ENGINEERING JOURNAL 493 (2024) . |
| APA | Lyu, Xiaolin , Lin, Ziqing , Huang, Chunzhi , Zhang, Xinyue , Lu, Yang , Luo, Zhong-Zhen et al. Tough and elastic hydrogel thermocells for heat energy utilization . | CHEMICAL ENGINEERING JOURNAL , 2024 , 493 . |
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Ion-conductive elastomers have emerged as ideal candidates for ionic skin and wearable devices due to their intrinsic stretchability and excellent electrical properties. Despite continuous efforts in this field, strain-stiffening, robust yet compliant ionic elastomers are still unattainable due to the limited intermolecular interactions, restricting their reliability and durability in practical applications. Inspired by the interwoven collagen fiber network and synergistic non-covalent interaction in the dermis, an immense strain-stiffening, ultra-stretchable, highly tough, and elastic ionic elastomer are reported by introducing the metal-oxygen interactions into the highly entangled network. The ionic elastomers also show intriguing self-healing ability, high adhesion, and environmental tolerance, contributed by the dynamic synergistic noncovalent interactions. The prepared ionic skin displays sensitive and stable responses to temperature and strain. This work demonstrates a new design strategy for fabricating high-performance ionic elastomers with excellent mechanical and electrical properties, showing great prospects in wearable and flexible devices. A strain-stiffening, robust yet compliant ionic elastomer is prepared by simulating the structure of the dermis. The ionic elastomer possesses immense strain-stiffening ability, ultra-stretchability, high elasticity, high toughness, self-healing ability, good adhesion, and environmental tolerance, which can realize human motion detection and temperature sensing. image
Keyword ：
compliant compliant ionic elastomer ionic elastomer self-healing self-healing strain-stiffening strain-stiffening tough tough
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| GB/T 7714 | Zhou, Piaopiao , Zhan, Weiqing , Shen, Shengtao et al. Strain-Stiffening, Robust yet Compliant Ionic Elastomer from Highly Entangled Polymer Networks and Metal-Oxygen Interactions [J]. | ADVANCED FUNCTIONAL MATERIALS , 2024 , 34 (38) . |
| MLA | Zhou, Piaopiao et al. "Strain-Stiffening, Robust yet Compliant Ionic Elastomer from Highly Entangled Polymer Networks and Metal-Oxygen Interactions" . | ADVANCED FUNCTIONAL MATERIALS 34 . 38 (2024) . |
| APA | Zhou, Piaopiao , Zhan, Weiqing , Shen, Shengtao , Zhang, Hui , Zou, Zhigang , Lyu, Xiaolin . Strain-Stiffening, Robust yet Compliant Ionic Elastomer from Highly Entangled Polymer Networks and Metal-Oxygen Interactions . | ADVANCED FUNCTIONAL MATERIALS , 2024 , 34 (38) . |
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Abstract ：
The rich phase behavior of block copolymers (BCPs) has drawn great attention in recent years. However, the double diamond (DD) phase is rarely obtained because of the competition between the minimization of interfacial energy and packing frustration. Here, a rod-coil BCP containing mesogen-jacketed liquid crystalline polymer is designed to acquire ordered bicontinuous network nanostructures. The reduction of internal energy originating from the orientational interaction among the rod blocks can compensate for the free energy penalty of packing frustration to stabilize the DD structure. The resulting BCP can also experience lamellae-to-DD and double gyroid-to-lamellae transitions by changing the annealing temperature. These results make the rod-coil BCP an excellent candidate for the self-assembly of ordered network structures, demonstrating great potential in nanopatterning and metamaterials.
Keyword ：
Block copolymer Block copolymer Double diamond Double diamond Double gyroid Double gyroid Ordered bicontinuous phase Ordered bicontinuous phase Rod-coil Rod-coil
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| GB/T 7714 | Lyu, Xiao-Lin , Yang, Shi-Chu , Xiao, An-Qi et al. Ordered Bicontinuous Network Structures Regulated by Orientational Interactions in a Rod-Coil Block Copolymer [J]. | CHINESE JOURNAL OF POLYMER SCIENCE , 2024 , 42 (5) : 636-642 . |
| MLA | Lyu, Xiao-Lin et al. "Ordered Bicontinuous Network Structures Regulated by Orientational Interactions in a Rod-Coil Block Copolymer" . | CHINESE JOURNAL OF POLYMER SCIENCE 42 . 5 (2024) : 636-642 . |
| APA | Lyu, Xiao-Lin , Yang, Shi-Chu , Xiao, An-Qi , Hou, Ping-Ping , Zhang, Wei , Pan, Hong-Bing et al. Ordered Bicontinuous Network Structures Regulated by Orientational Interactions in a Rod-Coil Block Copolymer . | CHINESE JOURNAL OF POLYMER SCIENCE , 2024 , 42 (5) , 636-642 . |
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Ionogels have garnered significant interest due to their great potential in flexible iontronic devices. However, their limited mechanical tunability and environmental intolerance have posed significant challenges for their integration into next-generation flexible electronics in different scenarios. Herein, the synergistic effect of cation-oxygen coordination interaction and hydrogen bonding is leveraged to construct a 3D supramolecular network, resulting in ionogels with tunable modulus, stretchability, and strength, achieving an unprecedented elongation at break of 10 800%. Moreover, the supramolecular network endows the ionogels with extremely high fracture energy, crack insensitivity, and high elasticity. Meanwhile, the high environmental stability and hydrophobic network of the ionogels further shield them from the unfavorable effects of temperature variations and water molecules, enabling them to operate within a broad temperature range and exhibit robust underwater adhesion. Then, the ionogel is assembled into a wearable sensor, demonstrating its great potential in flexible sensing (temperature, pressure, and strain) and underwater signal transmission. This work can inspire the applications of ionogels in multifunctional sensing and wearable fields. Ionogels with a 3D supramolecular network can be constructed by cation-oxygen coordination interaction and hydrogen bonding. The supramolecular ionogel possesses tunable mechanical properties, high fracture energy, crack insensitivity, high elasticity, and environmental stability. In addition, the ionogel can be used in flexible sensing and underwater communication transmission, demonstrating great potential in intelligent robots and wearable devices. image
Keyword ：
flexible sensing flexible sensing ion-conductive elastomer ion-conductive elastomer mechanical properties mechanical properties thermal stability thermal stability
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| GB/T 7714 | Lyu, Xiaolin , Zhang, Haoqi , Shen, Shengtao et al. Multi-Modal Sensing Ionogels with Tunable Mechanical Properties and Environmental Stability for Aquatic and Atmospheric Environments [J]. | ADVANCED MATERIALS , 2024 , 36 (45) . |
| MLA | Lyu, Xiaolin et al. "Multi-Modal Sensing Ionogels with Tunable Mechanical Properties and Environmental Stability for Aquatic and Atmospheric Environments" . | ADVANCED MATERIALS 36 . 45 (2024) . |
| APA | Lyu, Xiaolin , Zhang, Haoqi , Shen, Shengtao , Gong, Yue , Zhou, Piaopiao , Zou, Zhigang . Multi-Modal Sensing Ionogels with Tunable Mechanical Properties and Environmental Stability for Aquatic and Atmospheric Environments . | ADVANCED MATERIALS , 2024 , 36 (45) . |
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Abstract ：
Polymer ionic conductors have shown great promise as iontronic sensors for flexible wearable devices and intelligent machines. A series of exquisitely designed hydrogels, ionogels, and ionic elastomers have good mechanical properties, such as super stretchability and high elasticity. However, most gels tend to exhibit softening or linear mechanoresponsive behavior when subjected to stress, which is completely different from the strain-stiffening behavior of the biological tissues. Therefore, designing polymer ionic conductors with good mechanical properties and strain-stiffening ability remains a challenge, which is critical in improving the reliability and durability of iontronic sensing. Here, we propose a strong/weak ionic interaction strategy to develop poly(ionic liquid) elastomers (PILEs) through the copolymerization of imidazolium ionic liquid monomers and acrylate monomers. The design allows weak ionic interactions to impart softness to the polymer network, while strong ionic interactions stiffen the network during stretching. The resulting transparent PILE possesses ultrastretchability, immense strain stiffening, good elasticity, high toughness, and puncture resistance. The PILE also shows antibacterial ability and good adhesion due to high-content charge groups in the polymer network. These combined properties make the PILE an excellent candidate for iontronic sensors, with excellent stability and sensitivity to temperature and strain, demonstrating great potential in wearable devices and human-machine interfaces.
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| GB/T 7714 | Yu, Li , Huang, Chunzhi , Gong, Yue et al. Ultrastretchable and Tough Poly(ionic liquid) Elastomer with Strain-Stiffening Ability Enabled by Strong/Weak Ionic Interactions [J]. | MACROMOLECULES , 2024 , 57 (5) : 2339-2350 . |
| MLA | Yu, Li et al. "Ultrastretchable and Tough Poly(ionic liquid) Elastomer with Strain-Stiffening Ability Enabled by Strong/Weak Ionic Interactions" . | MACROMOLECULES 57 . 5 (2024) : 2339-2350 . |
| APA | Yu, Li , Huang, Chunzhi , Gong, Yue , Zheng, Shixiang , Zhou, Piaopiao , Zhang, Xuan et al. Ultrastretchable and Tough Poly(ionic liquid) Elastomer with Strain-Stiffening Ability Enabled by Strong/Weak Ionic Interactions . | MACROMOLECULES , 2024 , 57 (5) , 2339-2350 . |
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Controlling the internal structure of block copolymer (BCP) particles has a significant influence on its functionalities. Here, a structure-controlling method is proposed to regulate the internal structure of BCP Janus colloidal particles using different surfactants. Different microphase separation processes take place in two connected halves of the Janus particles. An order-order transition between gyroid and lamellar phases is observed in polymeric colloids. The epitaxial growth during the structural transformation from gyroid to lamellar phase undergoes a two-layered rearrangement to accommodate the interdomain spacing mismatch between these two phases. This self-assembly behavior can be ascribed to the preferential wetting of BCP chains at the interface, which can change the chain conformation of different blocks. The Janus colloidal particles can further experience a reversible phase transition by restructuring the polymer particles under solvent vapor. It is anticipated that the new phase behavior found in Janus particles can not only enrich the self-assembly study of BCPs but also provide opportunities for various applications based on Janus particles with ordered structures. The ratio of dual surfactants is adjusted to control the formation of Janus particles with lamellar and gyroid structures. The transformation from gyroid to lamellae undergoes an epitaxial growth process. The Janus particles can be further restructured into the gyroid or lamellar structure under solvent vapor.image
Keyword ：
block copolymer block copolymer emulsion emulsion gyroid gyroid liquid crystalline polymer liquid crystalline polymer self-assembly self-assembly
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| GB/T 7714 | Huang, Chunzhi , Zhang, Xinyue , Lyu, Xiaolin . Encounter between Gyroid and Lamellae in Janus Colloidal Particles Self-Assembled by a Rod-Coil Block Copolymer [J]. | MACROMOLECULAR RAPID COMMUNICATIONS , 2024 , 45 (8) . |
| MLA | Huang, Chunzhi et al. "Encounter between Gyroid and Lamellae in Janus Colloidal Particles Self-Assembled by a Rod-Coil Block Copolymer" . | MACROMOLECULAR RAPID COMMUNICATIONS 45 . 8 (2024) . |
| APA | Huang, Chunzhi , Zhang, Xinyue , Lyu, Xiaolin . Encounter between Gyroid and Lamellae in Janus Colloidal Particles Self-Assembled by a Rod-Coil Block Copolymer . | MACROMOLECULAR RAPID COMMUNICATIONS , 2024 , 45 (8) . |
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