Materials Horizons
·
2023
·Vol. 10
·期 12
·5684-5693
·
IF 13.3
Panqin Wang,Jiaren Du,Tengyue Wang,Shaoxing Lyu,Rik Van Deun,Dirk Poelman,Hengwei Lin
Despite the substantial progress made, the responsiveness of thermo-responsive materials upon various thermal fields is still restricted to monochromatic visualization with single-wavelength light emission. This stems from a poor understanding of the photophysical processes within the materials and the unvarying optical performance of luminescent centers’ response to various ambient temperatures. Conventional techniques to assess the inhomogeneities of thermal fields can be time-consuming, require specialized equipment and suffer from inaccuracy due to the inevitable interference from background signals, especially at high temperature. To this end, we overcome these limitations for the first time, to flexibly visualize temperature inhomogeneities by developing a thermochromic smart material, SrGa12−xAlxO19:Dy3+. Two distinct modes of thermochromic properties (steady-state temperature-dependent luminescence and thermally stimulated luminescence) are investigated. It is revealed that the abundant colors (from yellow, green to red) and amazing color-changing features are due to the superior optical integration of the host (SrGa12−xAlxO19) and dopant (Dy3+) emissions under specific thermal stimulations. We suggest that this thermo-responsive smart material can be used to realize highly efficient and simple visualization of invisible thermal distribution in industry and beyond.
研究领域:
材料科学
·
光学工程
·
热物理学
·
功能材料
·
工业检测
✓ 已验证
DOI
高影响因子
Materials Research Express
·
2024
·Vol. 11
·期 11
·115401
·
IF 1.8
Jian Lu,Wenlong Xia,Xiangyang Ye,Xiaofeng Song
The biomaterials that can respond to environmental stimuli have attracted increasing attention because their applications will greatly expand the boundaries of modern medicine. In the work, poly(N-isopropylacrylamide)-poly(ε-caprolactone) (PNIPAm-PCL) with the low critical solution temperature (LCST) was synthesized by a combination of chain transfer and ring-opening method to endow poly (lactic acid) (PLLA) with the temperature-controlled wettability. The effects of PNIPAm-PCL on the thermal properties, mechanical properties, and temperature-controlled wettability were studied. At 20 wt% of PNIPAm-PCL/PLLA, the tensile strength of the material reduces slightly, but its elongation at break is enhanced significantly, which reaches 135.1%. PNIPAm-PCL/PLLA exhibits good temperature-controlled wettability. With the temperature rising from 0 to 45 °C, the water contact angle increases from 29.8° to 80.1°; conversely, it goes down, and there is a hysteresis. The material still has good stability and degradability. This work provides an example for the development of intelligent tissue engineering materials.
研究领域:
生物材料学
·
组织工程学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Cunping Bai,Jingtian Kang,Yan Qing Wang
Liquid crystal elastomers (LCEs) are among the key smart materials driving soft robotics and LCE fibers have garnered significant attention for their rapid response characteristics. A convenient and fast method for programming orientations of liquid crystal molecules is a focal issue in LCE applications. Inspired by the Kirigami technique, here, we propose a novel method for fabricating LCE fibers based on customizable cutting paths and secondary photo-cross-linking. While most existing LCE actuators exhibit contraction ratios of around 30 to 40%, our conical spiral actuator, fabricated from LCE-carbon nanotube (CNT) fiber using the proposed method, demonstrates a significantly higher contraction ratio, reaching up to 80%. The contraction ratio can be controlled by adjusting the cutting path parameters and we elucidate the mechanism linking liquid crystal orientation to the distribution of contraction ratio. Additionally, the conical spiral deformation of the actuator can be manipulated with light radiation, enabling versatile functionalities such as catching, twisting, and gripping. We hope that the novel LCE fiber fabrication method presented provides new insights for programming and preparing LCE fibers, offering a valuable reference for the application of smart soft materials.
研究领域:
材料科学
·
软体机器人
·
智能材料
·
高分子科学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Defence Technology
·
2023
·
IF 5.1
Weitao Yang,Yuchen Gao,Rui Hu,Manman Li,Fengqi Zhao,He Jiang,Xuan Zhang
Smart materials, which exhibit shape memory behavior in response to external stimuli, have shown great potential for use in biomedical applications. In this study, an energetic composite was fabricated using a UV-assisted DIW 3D printing technique and a shape memory material (SMP) as the binder. This composite has the ability to reduce the impact of external factors and adjust gun propellant combustion behavior. The composition and 3D printing process were delineated, while the internal structure and shape memory performance of the composite material were studied. The energetic SMP composite exhibits an angle of reversal of 18 s at 70°, with a maximum elongation typically reaching up to 280% of the original length and a recovery length of approximately 105% during ten cycles. Additionally, thermal decomposition and combustion behavior were also demonstrated for the energetic SMP composite.
研究领域:
材料科学
·
高分子化学
·
推进剂技术
·
智能响应材料
·
增材制造
✓ 已验证
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2018
·
IF 3.741
Lin Liu,Yueting Pei,Yuandong Zhang,Jinze Wang,Li Chen
In this work, we presented a kind of intelligent supramolecular hydrogels (SHGs) based on base-pairing interaction between guanine and cytosine, comprising α-cyclodextrin, thioketals-modified guanine (G-TK-G) and cytosine-terminated PEG (C-PEG-C). The hydrogen bond of nucleic acid between G and C as an additional cross-linker effectively enhanced storage moduli ( G ′s) of the hydrogels. Notably, the obtained hydrogels exhibited excellent reactive oxygen species (ROS) responsive property due to the introduction of thioketals group. Under ROS-rich environment, the hydrogels could control the release of loaded-cargoes, outlining the potential of intelligent materials for biomedical application, such as smart drug delivery for anticancer.
研究领域:
生物材料学
·
药剂学
·
分子生物学
✓ 已验证
DOI
高影响因子
Polymer Chemistry
·
2016
·Vol. 7
·期 37
·5773-5782
·
IF 5.687
Shaojun Chen,Zhankui Mei,Huanhuan Ren,Haitao Zhuo,Jianhong Liu,Zaochuan Ge
This paper reports a new type of zwitterionic polyurethane containing pyridine type zwitterionic segments for shape memory materials. The pyridine type zwitterionic shape memory polyurethanes (SMPUs) were synthesized using polyurethane polymerization from N,N-bis(2-hydroxylethethyl)isonicotinamide (BINA), hexamethylene diisocyanate (HDI), diphenylmethane diisocyanate (MDI) and 1,4-butanediol (BDO), followed by a ring-opening reaction with 1,3-propanesultone (PS). The structure and properties of the pyridine-type zwitterionic SMPUs (PyZPUs) were investigated systematically. The results demonstrate that the PyZPUs form phase-separation structures composed of a hard phase and an amorphous soft phase with a broad glass transition. The shape memory tests show that the PyZPUs have thermal-induced dual-shape memory effects (SMEs), triple-SMEs and quadruple-SMEs and also moisture-sensitive SMEs. Comparatively, the samples with PS/BINA molar ratios of 0.6–0.8 have more than 86% shape recovery and more than 95% shape fixity with a heat stimulus. Under moisture conditions, these samples also show the quickest moisture-sensitive strain recovery, up to 86%. Moreover, the PyZPUs show good biocompatibility when the content of pyridine type zwitterionic segments is beyond 21 wt%. Thus, the PyZPUs are expected to have many promising applications in smart biomedical fields.
研究领域:
生物材料学
·
高分子科学
·
智能响应材料
·
组织工程
·
转化医学
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药物递送系统
·
表面功能化
✓ 已验证
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2025
·
IF 8.9
Suyun Tian,Chuankai Yang,Yingzi Gu,Shengzhe Zhao,Xian Jian
Single-type carbon material is often limited in its application in the field of intelligent absorption due to their lack of outstanding performance. However, traditional physical mixing methods are difficult to achieve effective interface bonding and multifunctional coupling of carbon materials. Here, we developed an effective method to prepare the entangled CNTs anchoring in graphene for intelligent absorbing materials possessing thermal sensitivity effect combing hydrothermal and CVD methods. Interestingly, ultrafine CNTs with diameter below 18 nm catalyzed from Fe/Co nanocrystals well dispersed on rGO surfaces. The as-designed dielectric rGO-CNTs hybrids strongly bonding with magnetic Fe/Co catalyst have the excellent microwave absorption performance. The RL min value of the −37.7 dB at thickness of 1.6 mm is obtained for rGO-CNTs which is better than pure carbon materials. Furthermore, this rGO-CNTs microwave absorbing materials also possess thermal sensitivity effect. The linear fitted relationship of (R-R 0 )/R 0 −temperature is found with the slope of 0.2 %/°C, showing the regular and steady trends. It indicates a highly thermal sensitive feature has great potential for intelligent absorbing materials. This study opens a novel pathway for ultrafine CNTs entangled with graphene enhancing its high-performance microwave absorption coupled with thermal sensitivity effect.
研究领域:
材料科学
·
纳米技术
·
电磁功能材料
·
智能材料
·
微波吸收
✓ 已验证
产品关联
DOI
高影响因子
Journal of Macromolecular Science Part A-Pure and Applied Chemistry
·
2022
·
IF 2.216
Feifei Shao,Tao Xue,Yijing Wang,Yesheng Xu,Xinjie Wang,Xinxin Li
The smart responsive materials have become one of the hottest areas of research in oil/water separation field and there are various studies on preparation technologies. However, most of the materials reported were prepared by coating or coupling to attach functional polymer to substrates, which generally had unstable physical and chemical properties and were difficult to be applied in harsh environments. In this work, we fabricated a smart and durable oil/water separation material by one-step foaming method to graft pH-responsive copolymer onto a polyurethane foam (PUF) substrate. The foam exhibited reversible wettability under different pH environments, had excellent oil adsorption capacity (24.78–64.27g/g) and high oil/water separation efficiency (above 98%). Besides, the foam also showed stable performance and excellent recyclability in a series of durability experiments, including mechanical abrasion, light radiation and chemical immersion. The foam with simple preparation process and excellent stability will have promising application prospects in the field of oil/water separation.
研究领域:
材料科学
·
化学工程
·
环境科学
·
高分子科学
✓ 已验证
DOI
高影响因子
POLYMER
·
2025
·
IF 4.5
Dingpeng Peng,Zean lin,Dhandapani Kuzhandaivel,Xiaowen Pu,Lixin Wu,Zixiang Weng
Shape Memory Polymers (SMPs) have emerged as a promising class of intelligent materials because of their unique ability to respond to external stimuli. The proposed method for fabricating magnetic shape-memory polymer composites (DLP-M-SMPs) using digital light processing (DLP) 3D printing technology represents a significant advancement in this field. By combining the shape memory properties of SMPs with their magnetic responsiveness, these composites can overcome the limitations of traditional thermally driven SMPs, such as their narrow operating temperature ranges and poor adaptability to harsh environments. The DLP-M-SMPs developed in this study demonstrated remarkable mechanical properties and shape-memory performance. With a high elongation at break of 760 % at room temperature, these materials exhibit exceptional flexibility and durability. Shape fixation rates exceeding 96 % and shape recovery rates exceeding 99 % indicate their ability to reliably maintain and recover programmed shapes. Furthermore, the successful 3D printing of complex structures capable of shape recovery under magnetic actuation demonstrated the versatility and potential of these materials for various applications. This innovative approach for fabricating high-resolution, high-performance magnetic shape-memory materials opens up new possibilities in fields such as flexible robotics and biomedical engineering, where precise control and adaptability are crucial.
研究领域:
材料科学
·
高分子科学
·
增材制造
·
智能材料与结构
·
生物医学工程
·
柔性机器人
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2018
·
IF 3.483
Haitao Zhuo,Zhankui Mei,Heng Chen,Shaojun Chen
In this contribution, shape memory polymers (SMPs) of chemically-crosslinked zwitterionic polyurethanes (CZPUs) were fabricated by crosslinking of the N,N-bis(2-hydroxyethyl) isonicotinamide (BINA)/hexamethylene diisocyanate (HDI) polyurethanes system by using pentaerythritol (PER), followed by zwitterionization with 1, 3-propanesultone (PS). As the zwitterionic units increased, it was found that the glass transition of hard phase in CZPUs remains constant while that of soft phase shifted at lower temperature, and a broad glass transition was obtained. The broad glass transition enables CZPUs to display triple, quadruple, and quintuple shape memory behaviours. Meanwhile, due to the chemically-crosslinked structure, the CZPUs exhibited an excellent shape fixation and recovery. Furthermore, the CZPU also exhibited good moisture-induced shape memory effect (SME) with a fast and high shape recovery observed below 70% RH and at 37 °C. The excellent thermally-induced multi-shape memory effect and moisture-induced shape memory effect enable CZPUs to be applied as smart materials for many applications among them the biomedical fields .
研究领域:
生物材料学
·
高分子科学
·
智能响应材料
·
组织工程
·
药物递送系统
·
再生医学
·
生物医学工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
You-Zhou Yang,Yun Rong,Yuan-Yuan Li,Mengmeng Ma,Dan Chen,Hang Lu,Chang Wu,Boyuan Shen,Jin-Ping Guan,Ming-Peng Zhuo
Smart materials demonstrate fascinating responses to environmental physical/chemical stimuli, including thermal, photonic, electronic, humidity, or magnetic stimuli, which have attracted intensive interest in material chemistry. However, their limited/harsh stimuli-responsive behavior or sophisticated postprocessing leads to enormous challenges for practical applications. Herein, we rationally designed and synthesized thermochromic Ni(II) organometallic [(C2H5)2NH2]2NiCl4–xBrx via a facile mechanochemical strategy, which demonstrated a reversible switch from yellow to blue color with a tunable phase-transition temperature from 75.6 to 61.7 °C. The simple electrospinning technology was applied to fabricate thermochromic Ni(II) organometallic-based nanofiber membranes for temperature monitoring. Furthermore, the organic charge-transfer cocrystal with a wide spectral absorption of 300–1950 nm and a high-efficiency photothermal conversion was combined with thermochromic Ni(II) organometallics for the desired dual-stimuli photo/thermochromism. This work supplies a new strategy for realizing multiple stimuli-responsive applications, such as thermal/light sensor displays and information storage.
研究领域:
材料化学
·
智能材料
·
热致变色材料
·
光致变色材料
·
纳米技术
·
传感器
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-9
·
IF 14.7
Yao Yueliang,Tse Yuen Cheong,Lai Samuel Kin-Man,Shi Yixiang,Low Kam-Hung,Au-Yeung Ho Yu
Responsive synthetic receptors for adaptive recognition of different ionic guests in a competitive environment are valuable molecular tools for not only ion sensing and transport, but also the development of ion-responsive smart materials and related technologies. By virtue of the mechanical chelation and ability to undergo large-amplitude co-conformational changes, described herein is the discovery of a chameleon-like [2]catenane that selectively binds copper(I) or sulfate ions and its associated co-conformational mechanostereochemical switching. This work highlights not only the advantages and versatility of catenane as a molecular skeleton in receptor design, but also its potential in constructing complex responsive systems with multiple inputs and outputs.
研究领域:
超分子化学
·
分子识别
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）