Journal of Materials Chemistry C
·
2024
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IF 5.7
Shizhen Song,Tengfei Zheng,Bo Li,Hangcheng Yang,Qin-Xiang Jia,Zhuting Hao,Wen Zhang,Ying Zhang
Solvent vapor-driven soft actuators have been seen as promising devices for human-environment interaction and gained considerable attention in recent years. Considering the limited types of response solvent and the lack of quantification, MOF/polymer intelligent soft actuators may be a potential candidate of the fabrication of the bio solvent-driven actuators. Thus, this paper present a multiple solvent-driven soft actuator based on MIL-88B/PVDF asymmetric film, and also the comparison to the analogs based on other MIL-88(Fe) series flexible MOFs (including MIL-88A, 88C and 88D) was made for the deformation-structure relationship and the solvent-driven mechanism investigation. The deformation behavior to various organic solvent (including methanol, toluene and chloroform) of the MIL-88(Fe)/PVDF composite films have been investigated, and the structure and composition of the MIL88(Fe) fillers and the composite films were also characterized by SEM, FT-IR, and XRD. Based on the above results, the MIL-88B/PVDF composite which shows the diversity of response objects and the fast deformation response to most of the organic solvents through the solvent swelling/adsorption of the MOF skeleton, was used to fabricate a monolayer soft film composed by MIL-88B, carbon black (CB) and PVDF, namely MIL-88B/CB/PVDF. The MIL-88B/CB/PVDF film not only realizes the excellent deformation-discolor dual-responsive to methanol atmosphere with the visible deformation which could being quickly achieved within 1s under 10 vol % methanol atmosphere and the maximum crimp angle being up to 558o within about 50 s, and also a wide color change range including six view angle-dependent high saturation color (red, orange, yellow, green, blue and purple), but also shows an approximate linear relationship to three of the organic solvents (methanol, toluene and chloroform) between the maximum curl angle and the solvent concentration. Furthermore, several smart devices have also been fabricated, including the methanol-driven bionic petals, worm robot, alertor and LIG sensor. Therefore, such soft composites of flexible MOF and polymer have great potential in bio-robot and this work may provide new design strategy for the MOFs/polymer smart materials.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2022
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IF 9.221
Zhuting Hao,Shizhen Song,Bo Li,Qin-Xiang Jia,Tengfei Zheng,Zhicheng Zhang
The dual-responsive actuator which response to external stimulus with deformation and discoloration simultaneously gained considerable attention for their application such as soft robot . Inspired by the soft MOF (Metal-Organic framework)/polymer solvent driven actuator based on flexible MOF which can expand/contract with the gain and loss of solvent molecules , and also the structural color films with inverted opal structure, a monolayer solvent driven dual-responsive actuator based on MOF/polymer composite, namely MIL-88A/CB(carbon black)/PVDF, has been successfully prepared through the casting and etching method. The MIL-88A/CB/PVDF film can respond to the change of ambient solvent atmosphere with the whole or part of the composite film exhibiting a synergistic coupling of the surface color change and the out-of-plane motion under the driven of the methanol vapor. The bending deformation of 730° can be quickly achieved in about 1.66 s and the color change covers a wide range with three high saturation color (red, green and blue) which can be observed with different view angles. In addition, some simple devices including smart flower, inchworm walker, and visual gas sensor were designed based on this material. This work is the first example which apply MOF to solvent driven dual response materials with simultaneous deformation and discoloration, which opens up a new application field for MOF, and also provides a new perspective for the preparation of smart materials.
研究领域:
材料科学
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智能材料
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软体机器人技术
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Jia Gao,Li Yan,Yan Yan,Li Chen,Jian Lu,Wendong Xing,Chao Yu,Muning Chen,Minjia Meng,Yongsheng Yan,Yilin Wu
Ensuring both selective separation and fast regenerability is still a challenge, especially for long-term operation in a harsh water system. Sustainable and effective development of molecularly imprinted membranes is highly desired. Herein, we propose a type of solvent-driven controllable molecularly imprinted membranes (CS-BMIMs) to realize the switched selectivity and fast regenerability by customized bifunctional monomers. The stable supramolecular envelope interaction and hydrogen bonds between the bifunctional monomers and the phenolic hydroxyl group is introduced to regulate the selectivity of BPA. The selectivity coefficients of CS-BMIMs can reach 7.52 ( α BPA/BP ) and 7.97 ( α BPA/HQ ). Poly (ethylene glycol) unit-containing chain of dynamic solvent-responsive cross-linker drives the swelling and deswelling polymer chains to accelerate the regenerability. Significantly, BPA can be readily adsorbed into the imprinted sites in a 25% methanol (MeOH) aqueous solution with an adsorption capacity of 41.88 mg g −1 while completely desorbed in 100% MeOH following the deswelling of BPA-imprinted sites. Compared with the ordinary elution methods ( V MeOH : V acetic acid , 9: 1), the solvent-driven controllable method displayed a fast adsorption/desorption process with desirable regenerability (15 min). Moreover, the proposal of “specially designed” stimulus–response material enriches the designability and options of membrane separation in water treatment, thereby laying a foundation for developing decontamination of the water.
研究领域:
环境科学
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材料科学
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水处理技术
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DOI
高影响因子
MOLECULES
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2025
·Vol. 30
·期 7
·1585
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IF 4.6
Huimin Sui,Miao Li,Yangyang Gao,Jie Luo,Fangyuan Ban,Tao Xu,Shuang Fu,Chao-Yang Zhao,Hailin Wen,Cuiyan Han
Local anesthetics have been widely used in clinical analgesia due to their ability to provide effective regional pain management. Accurate measurement of local anesthetics in body fluids is crucial for ensuring patient medication safety and optimizing therapeutic efficacy. Herein, we present a convenient, economical, sensitive, and efficient TLC-SERS method for multiplex determination of six kinds of anesthetics (pro) in human plasma, including procaine hydrochloride (Pro), tetracaine hydrochloride (Tet), dibucaine (Dib), mepivacaine hydrochloride (Mep), lidocaine hydrochloride (Lid), and ropivacaine hydrochloride (Rop). The TLC method was adopted to separate six local anesthetics effectively. In order to improve the sensitivity, TLC spots were concentrated into smaller ones using methanol through solvent-driven enrichment, then Ag NPs staining was applied to enriched spots for a strong and unique SERS response of each anesthetic. As a result, linear calibration curves of SERS intensity ratio versus negative logarithm of spotting amounts sampled on TLC plates were obtained, along with the lowest detectable amounts in this study were 1 ng (Pro), 10 pg (Tet), 10 ng (Dib), 50 ng (Mep), 50 ng (Lid), and 0.1 μg (Rop), which were up to 2 × 104times more sensitive than our previous TLC-Raman method. Moreover, the method was successfully applied to human plasma samples, demonstrating the feasibility and potential for multiplex analysis of local anesthetics in clinical practice, criminal forensics, and aquaculture.
研究领域:
分析化学
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临床医学
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药理学
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产品关联
DOI
PubMed
高影响因子
Polymer Chemistry
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2025
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IF 3.9
Hongcai Wang,Xiuqiong Chen,Yanan Bu,Ting Wu,Huiqiong Yan,Qiang Lin
In recent years, Stimulus-responsive hydrogels have been extensively researched in the field of actuators due to their capacity to undergo significant deformation in response to various external stimuli. However, it is difficult for the existing hydrogel actuators to meet the requirements of simple preparation, fast response speed and shape memory function, which greatly limits their further application. In the present study, a multi-functional Fe3+-sodium alginate/poly (N-isopropyl acrylamide) interpenetrating network (IPN) hydrogel with ultrafast thermal response, shape memory function and solvent drive was prepared via a simple method. The creation of Fe3+-carboxylate coordination within the hydrogel network, coupled with ultraviolet (UV) photodissociation, was employed to achieve shape memory properties. Moreover, the local gradient of the hydrogel could be precisely programmed by manipulating the UV irradiation time and position. As a result, the obtained gradient hydrogels possessed excellent temperature driving and solvent driving properties, which could not only carry out 4 s fast grasp of objects in 70 ℃ water, but also achieve 2D to 3D complex deformation in methanol aqueous solution. This work provided a new manufacturing method and application prospect for the development of novel intelligent hydrogel actuators
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
危险品化学品经营许可证（带存储）