Article
Nanoscience & Nanotechnology
Rui-Yu Ma, Wen-Jin Sun, Ling Xu, Li-Chuan Jia, Ding-Xiang Yan, Zhong-Ming Li
Summary: Given the rapid developments in modern devices, there is an urgent need for shape-memory polymer composites (SMPCs) in soft robots and other fields. However, it remains a challenge to endow SMPCs with both a reconfigurable permanent shape and a locally reversible shape transformation. In this study, a dynamic cross-linked network was created in carbon nanotube/ethylene vinyl acetate copolymer (CNT/EVA) composites by designing the molecular structure of EVA. The resulting CNT/EVA composite demonstrated the capability of remote actuation and programmable three-dimensional (3D) structure and locally reversible actuation.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Wanhong Zhang, Siwen Chen, Siyu Chen, Gongshu Wang, Siyu Han, Jing Guo, Liqun Yang, Jianshe Hu
Summary: As one of the stimulus-responsive intelligent materials, shape memory polymers (SMPs) have gained attention due to their lightweight, low density, easy processing, and large shape variables. This study synthesized a new polycarbonate monomer named MMC and constructed a cross-linked network to enhance the self-healing and mechanical properties of SMPs. The elastomer obtained showed high stretchability and excellent shape recovery rate, making it a potential candidate for body sensors, stimuli-responsive materials, and wound healing applications.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Polymer Science
Xiaowei Xu, Xinyue Hao, Jing Hu, Weisheng Gao, Nanying Ning, Bing Yu, Liqun Zhang, Ming Tian
Summary: A novel strategy has been developed to prepare a silicone elastic light-triggered actuator with a Janus structure using UV light-induced heterogeneous crosslinking with carbon nanotube accretion. By tailoring various factors, the Janus membranes can achieve multiple deformations and exhibit shape transformation triggered by organic solvent or laser irradiation.
Article
Polymer Science
Sisi Chen, Mengyao Zhang, Qingyuan Li, Jiachen Li, Shengpeng Wu, Jian Zhou, Guoqing Jin, Zhengbiao Zhang, Xiangqiang Pan, Jian Zhu
Summary: Liquid crystal elastomers (LCEs) are versatile polymer materials used in various applications, but the contradiction between reprogrammability and stable actuation performance remains a challenge. Introducing photoactivated dynamic covalent bonds (DCBs) into thermotropic LCEs can help address this issue. This study utilizes allyl selenide chemistry to achieve multiple network reconfigurations of LCEs under visible light conditions (405-450nm). The mild stimulation conditions and sustainable dynamic exchange capability offer great potential for the application and design of covalently adaptable LCEs.
Article
Materials Science, Characterization & Testing
Wenwen Zhang, Xuefei Leng, Mengyun Gao, Zhiyong Wei, Yiying Wang, Yang Li
Summary: A series of shape memory polymers were prepared by incorporating disulfide bonds for self-healing ability. The polyurethane demonstrated impressive shape memory capability and high potential for biomedical applications.
Article
Materials Science, Characterization & Testing
Hong Li, Yi Gao, Shuangliang Zhao, Wei Gao, Xiangning He, Riyao Cong, Xiaoying Xie, Jianju Luo, Chuwang Su
Summary: Shape Memory Polymer (SMP) is a smart material that can respond to changes in the external environment. The synthesized polymer in this study has a wide transition temperature range and exhibits excellent thermally induced shape memory performance, showing great potential for applications.
Article
Chemistry, Multidisciplinary
Zhao Xu, Sen Meng, Dun-Wen Wei, Rui-Ying Bao, Yu Wang, Kai Ke, Wei Yang
Summary: A polyolefin elastomer vitrimer (POEV) was prepared by constructing a dynamic cross-linked network based on boronic ester bonds. The controllable relaxation of POEV by temperature enables the actuation domain with a reduction in entropy and the skeleton domain with a relatively high entropy, greatly affecting the reversible shape memory effects (RSMEs). By combining the decreasing entropy of POEV chains and topological rearrangement, hybrid aligned carbon nanotubes (CNTs) can be constructed in POEV, enhancing its elasticity and acting as a hybrid skeleton for RSMEs.
Article
Chemistry, Multidisciplinary
Yawen Gong, Miao Yao, Jun Nie, Yong He
Summary: The study proposes a healing strategy based on space adjustment for cross-linked polymers, enabling efficient repair of damaged sites by enhancing the motilities of polymer coils. By adjusting the spatial density, the healing efficiency of the polymer is improved without the need for additional functional components.
Article
Chemistry, Multidisciplinary
Yawen Gong, Miao Yao, Jun Nie, Yong He
Summary: A healing strategy based on space adjustment is proposed in this study, utilizing pre-designed holes in cross-linked polymer networks to enhance the mobility of polymer coils for improved healing efficiency. The space-adjusted polymer materials can readily heal, with a healing efficiency of up to 96%.
Article
Nanoscience & Nanotechnology
Yuhua Ge, Hanxiao Wang, Jieying Xue, Jinqiang Jiang, Zhaotie Liu, Zhongwen Liu, Guo Li, Yue Zhao
Summary: The integration of shape memory property and surface treatment enables a single-component polymer film with programmable moisture-driven actuating behaviors. By programming the films into 3D shapes and conducting surface treatments, 3D-3D morphing can be achieved with readily tunable actuation behavior. The created surface patterns can also detect human breathes and lead to interesting applications such as smart switch in conducting circuit.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Yue Liu, Liang Fang
Summary: This study aims to enhance the programability of multi-shape memory micro-objects using atomic force microscopy (AFM) to achieve sequential shape reconfiguration or actuation. Microcuboids were compressed to generate microbowls at different temperatures, and sequential full recovery and actuations were achieved by varying the programming temperatures and procedure sequence.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Polymer Science
Linfang Zhou, Lin Zhou, Ming Kang, Xiuli Zhao, Guanjun Chang, Mao Chen
Summary: The article introduces a new method of preparing tough non-covalent adaptable networks using cation-pi cross-linking, and the experiment demonstrates that the cross-linked epoxy exhibits excellent mechanical properties and dynamic properties.
Article
Nanoscience & Nanotechnology
Wen Liu, Yang He, Jinsong Leng
Summary: A transparent and humidity-responsive shape memory polyurea with high tensile strength, high recovery stress, and high energy output is prepared by constructing a bioinspired hard-soft nanophase structure and hierarchical hydrogen bonding in the molecular network.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
Reinhold Pommer, Robert Saf, Ralf Supplit, Armin Holzner, Harald Plank, Gregor Trimmel
Summary: This study reports a versatile and cost-effective manufacturing method for shape-memory polymers (SMPs) based on binary elastomer-thermoplastic blends. The SMPs showed efficient thermo-responsive dual-shape-memory and promising multi-shape-memory features, making them suitable for applications such as soft robotics or biomedical devices.
Article
Polymer Science
Wei Liu, Jianping Ding, Yukun Chen
Summary: This study reports a simple and effective method to prepare TPVs with mechanical strength, recyclability, and shape memory properties using a tailored cross-linker. These TPVs exhibit improved tensile behavior and shape memory ability compared to traditional TPVs.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
Article
Cell Biology
Feng Shi, Ke Duan, Zaijun Yang, Yumei Liu, Jie Weng
Summary: The semi-dynamic seeding method combines the high seeding efficiency of static seeding and satisfactory distribution homogeneity of dynamic seeding while circumventing their disadvantages. It may contribute to improved outcomes of bone tissue engineering.
CELL AND TISSUE BANKING
(2022)
Review
Engineering, Multidisciplinary
XiaoMeng Yang, JianWen Hou, Yuan Tian, JingYa Zhao, QiangQiang Sun, ShaoBing Zhou
Summary: Antibacterial surfaces, which rely on the nature of the material itself, play a significant role in ensuring safe food and water, human health, and industrial equipment. Preventing biofilm formation is an efficient approach to develop antibacterial surfaces, which can be achieved through repelling or killing bacteria. This review summarizes the fabrication methods and applications of antibacterial surfaces and presents several crucial points for developing long-term stable, no drug resistance, broad-spectrum, and even programable antibacterial surfaces.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2022)
Article
Engineering, Biomedical
Yang He, Mi Tian, Xilin Li, Jianwen Hou, Song Chen, Guang Yang, Xian Liu, Shaobing Zhou
Summary: The mineralized nanofiber scaffold promotes osteogenic differentiation of bone mesenchymal stem cells and stimulates macrophage polarization towards a pro-healing phenotype, enhancing bone regeneration in the alveolar bone defect repair.
ADVANCED HEALTHCARE MATERIALS
(2022)
Article
Chemistry, Physical
Jinhui Huang, Yilei Wang, Jing Guo, Shanshan Wu, Hui Xie, Shaobing Zhou
Summary: In this study, an adaptive reprogrammable wearable electronic device for pressure sensing is developed. It is based on an anisotropic conductive shape-memory aerogel with a unique three-dimensional layered structure, which allows for accurate long-term monitoring with excellent performance stability and sensitivity.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Pharmacology & Pharmacy
Jingya Zhao, Huabei Huang, Jinyan Zhao, Xiang Xiong, Sibo Zheng, Xiaoqing Wei, Shaobing Zhou
Summary: Researchers have developed a hybrid bacterium that targets tumors and modifies tumor-associated macrophages, improving the effectiveness of immunotherapy for cancer treatment.
ACTA PHARMACEUTICA SINICA B
(2022)
Article
Nanoscience & Nanotechnology
Lianghao Jia, Shanshan Wu, Ruiting Yuan, Tao Xiang, Shaobing Zhou
Summary: Inspired by human muscle and skin tissues, an effective method is proposed to fabricate hydrogel sensors with antifatigue fracture performance and high sensing sensitivity for detecting human motions. The hydrogel sensors exhibit enhanced sensing sensitivity due to the microstructured surfaces and antifatigue fracture properties of cellulose nanofiber@carbon nanotube nanohybrids.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Xilin Li, Jingmei Pan, Yan Li, Funeng Xu, Jianwen Hou, Guang Yang, Shaobing Zhou
Summary: In this study, a localized drug delivery system based on a hierarchical-structured fiber device was developed to precisely reprogram tumor-associated macrophages (TAMs) and combine them with immunogenic cell death (ICD), aiming to enhance the antitumor immunotherapeutic effect.
Article
Chemistry, Multidisciplinary
Yang Luo, Yingmin Li, Zhengjie Huang, Xinyang Li, Yi Wang, Jianwen Hou, Shaobing Zhou
Summary: Aberrant energy metabolism in tumors not only promotes cell proliferation but also inhibits antitumor immunity. A novel metabolic nanoregulator was developed to cut off energy supply and improve immune suppression, enabling synergistic tumor starvation-immunotherapy.
Article
Chemistry, Physical
Yao Xiao, Ling Zhang, Mengzhen Shi, Rui Tang, Zherui Jiang, Yue Song, Yuan Tian, Shaobing Zhou
Summary: Stapled peptides, when combined with DOX, show enhanced therapeutic efficacy in cancer cells due to their robust cellular permeability and therapeutic effects.
Article
Chemistry, Analytical
Jinyan Zhao, Yingping Li, Xin Chen, Dan Mu, Jingya Zhao, Shaobing Zhou
Summary: Rapid and sensitive detection of pathogenic bacteria is crucial for timely treatment of sepsis and reducing mortality. This study presents a sensitive near-infrared fluorescence identification and rapid magnetic capture method for detecting multiple bacteria in whole blood based on bioorthogonal nanoprobes.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Applied
Tianyu Yin, Xinyu Zhang, Shuai Shao, Tao Xiang, Shaobing Zhou
Summary: In this study, covalently crosslinked porous cryogels with high adsorption capacity and reusability were fabricated for the removal of cationic dyes in wastewater. The cryogels exhibited excellent adsorption performance under alkaline conditions, and maintained their adsorption capacity and selective adsorption capability after regeneration.
CARBOHYDRATE POLYMERS
(2023)
Article
Materials Science, Ceramics
Chengdong Zhang, Guowen Duan, Jinsheng Li, Dongqin Xiao, Feng Shi, Ke Duan, Tailin Guo, Xingping Fan, Jie Weng
Summary: A novel hydrothermal method was developed to fabricate biomimetic three-dimensional CaP network structures on alkali-treated Ti surfaces, which exhibited improved bioactivity compared to traditional coatings. This hierarchical structure showed enhanced hydrophilicity, increased roughness, and improved cell attachment, proliferation, and osteogenic differentiation. The improved bioactivity was attributed to the hierarchical micro/nano-structure and CaP chemistry of the coatings.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Xudong Wen, Xiang Xiong, Guang Yang, Wenjing Xiao, Jun Hou, Tao Pan, Yonghe Hu, Shaobing Zhou
Summary: A novel core/shell structured nanoplatform has been developed for targeted delivery of catalase, doxorubicin (Dox), and resiquimod (R848) to enhance the efficacy of immunotherapy. The nanoplatform actively targets the tumor site and blocks the A2AR pathway in T regulatory (Treg) cells through in situ oxygen production and the release of Dox and R848. This leads to a decreased expression of Treg cells and improved activation of dendritic cells (DCs), resulting in a significant inhibition of tumor growth.
JOURNAL OF CONTROLLED RELEASE
(2023)
Article
Engineering, Biomedical
Zijian Shao, Tianyu Yin, Jinbo Jiang, Yang He, Tao Xiang, Shaobing Zhou
Summary: A self-adaptive multifunctional hydrogel with self-healing property and injectability has been developed for treating diabetic wounds. The hydrogel can react with high glucose and hydrogen peroxide to alleviate oxidative stress and release drugs. In animal experiments, the hydrogel accelerates angiogenesis and wound closure. This self-adaptive multifunctional hydrogel shows potential for the treatment of diabetic wounds.
BIOACTIVE MATERIALS
(2023)
Article
Polymer Science
Tao Xiang, Jiao Wang, Lianghao Jia, Pan Wang, Shaobing Zhou
Summary: Two-way shape-memory polymers (2W-SMPs) have attracted attention for their potential applications in smart actuators, soft robotics, and artificial muscles. This work proposes a facile fabrication method for water-triggered 2W-SMPs using a one-step free radical polymerization approach, demonstrating programmable and reversible shape-memory effects.
