Energies
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2022
·Vol. 15
·期 22
·8542
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IF 3.252
Yue Zhang,Ruixing Li
Nanoscale tungsten bronze can convert near-infrared light into thermal energy. For a chemical synthesis, intermediate products and processes are potentially positive or negative to an end product. In this study, (NH4)2SO4was added into the hydrothermal system of WO3, CsCl, CH3CH2CHO, and NH3·H2O to increase the Cs/W ratio in solution. An intermediate, Cs1.1W1.65O5.5, was isolated. Subsequently, it was confirmed via a kinetics experiment conducted for different times. The results of the NH3·H2O and NH4COOCH3system indicate there are two influence factors that influence the formation of Cs1.1W1.65O5.5: the leaching out of W and imine reactions. A low leaching out rate induces a high Cs/W ratio and low-concentration W in solution, leading to the formation of Cs1.1W1.65O5.5. The imine reaction decreasing CH3CH2CHO restrains the reduction in Cs1.1W1.65O5.5. The increase in CH3CH2COO−with the reduction reaction results in both the micron-size sticks and nano-size equiaxial particles in powder.Keywords:cesium tungsten bronze;intermediate;hydrothermal;synthesis;near-infrared response
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 18
·8934-8948
·
IF 11.301
Ran Wei,Jiabei Guo,Lunqiang Jin,Chao He,Yi Xie,Xiang Zhang,Weifeng Zhao,Changsheng Zhao
As an important type of smart membrane, stimuli-responsive membranes with switchable separation capability and permeability are urgently needed for developing advanced filtration membranes. In this study, smart membranes with anion-/near-infrared (NIR)-responsive and improved anti-fouling properties were fabricated by introducing poly(ionic liquid) (PIL) modified Fe3O4 nanoparticles on the surfaces and pore channels of polyethersulfone membranes through the vapor induced phase separation (VIPS) method. Thanks to the anion-/NIR-responsiveness of the nanoparticles, adjustable surface wettability and pore sizes of the membranes were obtained. The fluxes of the membranes were well-controlled along with adjusting the sizes of the nanoparticles via anion-exchange and NIR irradiation. The switchable pore size was further demonstrated by the filtration of polyethylene glycol (PEG)-800 and PEG-2000. In addition, the wettability and zeta-potential of the membrane surfaces could be adjusted by exchanging the counteranions of the immobilized PIL nanoparticles, which endowed the membranes with robust anti-fouling abilities toward biological contaminants like bovine serum albumin when changing the counteranions from hydrophilic to hydrophobic. After the counteranion exchange desorption, the intelligent membranes were then self-cleaned.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR RAPID COMMUNICATIONS
·
2024
·Vol. 45
·期 13
·2300737
·
IF 4.2
Ruyue Wang,Xingxing Chen,Yilong Cheng,Zicheng Ding,Xiaoqing Ming,Yanfeng Zhang
Near-infrared (NIR)-triggered shape memory hydrogels with promising mechanical strength hold immense potential in the field of biomedical applications and soft actuators. However, the optical and mechanical properties of currently reported hydrogels usually suffer from limited solubility and dispersion of commonly used photothermal additives in hydrogels, thus restricting their practical implementations. Here,, a set of NIR-responsive shape memory hydrogels synthesized by polyaddition of diisocyanate-terminated poly(ethylene glycol), imidazolidinyl urea (IU), and p -benzoquinone dioxime (BQDO) is reported. The introduction of IU, a hydrogen bond reinforcing factor, significantly enhances the mechanical properties of the hydrogels, allowing for their tunable ranges of the ultimate tensile strength (0.4–2.5 MPa), elongation at break (210–450%), and Young's modulus (190–850 kPa). The unique hydrogels exhibit an intrinsic photothermal effect because of the covalently incorporated photothermal moiety (BQDO), and the photothermal supramolecular hydrogel shows controllable shape memory capabilities characterized by rapid recovery speed and high recovery ratio (>90%). This design provides new possibilities for applying shape memory hydrogels in the field of soft actuators.
研究领域:
生物材料学
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高分子化学
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生物医药工程
✓ 已验证
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2025
·
IF 6.3
Jinyun Cai,Haiyi Zhong,Wenlin Zhou,Ziqi Zhu,Kunying Yu,Peiyuan Li
The use of antibacterial hydrogel with biocompatibility has gained attention in wound healing due to the proliferation of drug-resistant microorganisms caused by antibiotic misuse, which slows down the healing process of skin wounds. This research employed a hydrogel that responds to both pH and near-infrared (NIR) in order to facilitate the healing of infected wounds. The dual-network hydrogel was successfully produced by utilizing the freeze–thaw method, which consists of secure components like ammonium alginate (AA) and polyvinyl alcohol (PVA). Polydopamine-curcumin (PDA-Cur) nanoparticles were prepared and loaded into the hydrogel. The medications could come out of the AA/PVA@PDA-Cur hydrogel (Gel-PC) when required under NIR laser irradiation. The incorporation of Curcumin provided the hydrogel with excellent antibacterial capabilities. Meanwhile, NIR radiation activated the photothermal PDA nanoparticles in the Gel-PC, generating localized thermal therapy to eliminate bacteria. In vivo treatment of mice on a Staphylococcus aureus -infected alloplastic defect model demonstrated that the Gel-PC had excellent antibacterial and wound-healing properties, leading to a reduction in inflammation. Gel-PC stimulated angiogenesis, collagen deposition, and the development of granulation tissue. Consequently, Gel-PC offered a tactical alternative for creating antibacterial wound dressings in conjunction with photothermal therapy and may find use in the treatment of infected wounds.
研究领域:
生物材料学
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医学
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药剂学
✓ 已验证
产品关联
DOI
高影响因子
PEST MANAGEMENT SCIENCE
·
2021
·Vol. 77
·期 11
·4960-4970
·
IF 4.845
Wenneng Wu,Minghui Wan,Qiang Fei,Yu Tian,Saijie Song,He Shen,Jian Shen
BACKGROUND Stimuli-responsive pesticide controlled release system provides a new strategy for the development of high-efficiency pesticides formulation. RESULTS In this article, we report a novel polydopamine surface modified MXene-Ti 3 C 2 T x nanocarrier for pesticide delivery and plant protection. Polydopamine modified Ti 3 C 2 T x (PDA@Ti 3 C 2 T x ) nanocarrier was prepared by biomimetic self-polymerization of dopamine on the surface of Ti 3 C 2 T x . A typical pesticide, emamectin benzoate (EB), was loaded on PDA@Ti 3 C 2 T x through physisorption process, with a high pesticide loading rate of 45.37%. PDA@Ti 3 C 2 T x exhibited excellent photothermal conversion effect ( η = 34.5%). Under the irradiation of near-infrared (NIR) laser, EB would sustained release from PDA@Ti 3 C 2 T x nanocarrier to surrounding medium. Compared with free EB, EB@PDA@Ti 3 C 2 T x exhibited prolonged persistence period, which can keep antipest activity at 14 days post spraying. In addition, PDA@Ti 3 C 2 T x nanocarrier and EB@PDA@Ti 3 C 2 T x nanoformulation are of good safety, showing no side effect to the seed germination and seedling growth. CONCLUSION This research developed a novel nanocarrier for water-insoluble pesticide delivery, realizing NIR-responsive controlled release and sustained antipest activity.
研究领域:
植物保护
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材料科学
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农业科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Changyang Li,Peng Wang,Dun Zhang,Sai Wang
Synergistic self-healing materials and inorganic particles to create self-healing superhydrophobic surfaces for improving their robustness is a common technique, but the suitability between the two is rarely mentioned. In this work, we developed a multifunctional superhydrophobic coating with room-temperature stability, mechanical stability, self-healing, and NIR stimuli response, in which self-healing polyurethane (PU) serves as the interface reinforcement layer and poly(dopamine) (PDA)-coated flower-like ZnO composite particles serve as the hydrophobic layer. A series of temperature-dependent self-healing PU materials were designed and synthesized by regulating the ratio of hard and soft chain segments in PU, and the relationship between the healing temperature of PU and the hydrophobic stability of the composite coatings was investigated. Based on dynamic hydrogen and disulfide bonds, PUs displayed excellent self-healing performance. Thanks to the self-healing and interfacial strengthening effect of PU and the photothermal properties of PDA, the composite coating exhibits not only excellent mechanical stability but also rapid self-healing ability in response to NIR stimuli. Furthermore, the smart coating demonstrated superior self-cleaning and corrosion resistance. This work provides a reference for developing strong and stable water-repellent reversible superhydrophobic coatings with great potential and promising future.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Hongqi Shi,Run Huang,Liujun Wu,Wanru Suo,Yunxiao Wang,Yusong Pan,Geliang Ren,Lei Huang
Designing new-type nanosystems to realize the combination of multiple treatment is an efficient routine to enhance the anti-tumor efficacy in clinic. In this study, molybdenum disulfide (MoS 2 ) was selected as a photothermal agent, and mesoporous silica (mSiO 2 ) was coated on the surface of MoS 2 using the solvothermal and template removal methods. The chemotherapeutic drug doxorubicin hydrochloride (DOX) as a model drug was then loaded into the above MoS 2 @mSiO 2 nanocarrier to prepare the tumor-targeting MoS 2 @mSiO 2 -DOX nanosystem. XRD, UV–Vis, FTIR, SEM, TEM, and DLS results jointly confirmed that the MoS 2 @mSiO 2 -DOX nanosystem with a particle size of approximately 370 nm was successfully synthesized. The XPS and BET analysis identified that the outer layer of MoS 2 @mSiO 2 nanocarrier was SiO 2 , which has a large surface area of 99.41 m 2 /g with an average pore size of 3.5 nm coated on the MoS 2 . The in-vitro cytotoxicity and photothermal performance of the MoS 2 @mSiO 2 nanodrug delivery system was tested, and the results show that MoS 2 @mSiO 2 has a low toxicity to normal human liver cells (HL-7702), and which also exhibits a good photothermal stability with a photothermal conversion efficiency of 28.8%. With the aid of the large specific surface area of mSiO 2 and the opposite zeta potential, a high amount of DOX was loaded on MoS 2 @mSiO 2 nanocarrier, and the measured loading efficiency of DOX can reach up to 48.87%. The 48 h-drug release rate of MoS 2 @mSiO 2 -DOX reaches 35.65% under the conditions of near infrared (NIR) laser irradiation at pH=5.0, which is nearly 5 times higher than that of 6.26% under the normal physiological environment (pH=7.4 without NIR laser irradiation), indicating that the MoS 2 @mSiO 2 -DOX nanosystem possesses obvious pH and NIR laser responsive release characteristics. The MoS 2 @mSiO 2 nanocarrier has good cytocompatibility, outstanding photothermal conversion and drug loading properties, and after DOX adsorption, the system exhibits excellent pH and laser responsive drug controlled release performance, which is expected to be widely used in the field of combining the photothermal-chemotherapy to synergistically resist tumor.
研究领域:
生物医学工程
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肿瘤学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2025
·
IF 4.7
Handa Liu,Kexin An,Ning Qiao,Lihua Liu,Xiaoran Sun,Xuepeng Zhang,Hongzhou Shang
In this study, a multifunctional nanoplatform was developed. Mesoporous carbon nanospheres were prepared using silica microspheres as hard templates through a hard-template method. Low molecular weight polyethyleneimine and succinic anhydride were grafted onto the spheres through amidation reactions to obtain near-infrared and pH dual-responsive mesoporous carbon nanospheres for targeted controlled drug release and photothermal therapy. The successful preparation of the nanocomposites with a particle size of approximately 120 nm was confirmed by SEM and TEM. The in-vitro cytotoxicity and photothermal performance were evaluated, and the results showed that the carrier exhibited low toxicity, with a survival rate of 91.94 % for mouse macrophages (RAW264.7). Additionally, the carrier demonstrated excellent photothermal stability with a photothermal conversion efficiency of 39.05 % and a maximum temperature increase of 39.6 °C. Drug adsorption tests revealed that the carrier's maximum equilibrium adsorption capacity for curcumin was 133.3 mg L −1 . In-vitro drug release experiments showed that the release performance could be controlled by pH and near-infrared laser irradiation. Under conditions of pH = 6 and near-infrared light, the cumulative drug release rate was 15.1 %. The excellent targeting, curcumin loading, and release performance of the carrier offer new possibilities for integrating photothermal therapy with chemotherapy for synergistic tumor treatment.
研究领域:
材料科学
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生物医药
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纳米医学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2015
·
IF 6.723
Jinxing Chen,Shan Lei,Yunyun Xie,Mozhen Wang,Jun Yang,Xuewu Ge
The preparation of efficient and practical biomacromolecules imprinted polymer materials is still a challenging task because of the spatial hindrance caused by the large size of template and target molecules in the imprinting and recognition process. Herein, we provided a novel pathway to coat a NIR-light responsive lysozyme-imprinted polydopamine (PDA) layer on a fibrous SiO2 (F-SiO2) microsphere grown up from a magnetic Fe3O4 core nanoparticle. The magnetic core–shell structured lysozyme-imprinted Fe3O4@F-SiO2@PDA microspheres (MIP-lysozyme) can be easily separated by a magnet and have a high saturation adsorption capacity of lysozyme of 700 mg/g within 30 min because of the high surface area of 570 m2/g and the mesopore size of 12 nm of the Fe3O4@F-SiO2 support. The MIP-lysozyme microspheres also show an excellent selective adsorption of lysozyme (IF > 4). The binding thermodynamic parameters studied by ITC proves that the lysozyme should be restricted by the well-defined 3D structure of MIP-lysozyme microspheres. The MIP-lysozyme can extract lysozyme efficiently from real egg white. Owing to the efficient NIR light photothermal effect of PDA layer, the MIP-lysozyme microspheres show the controlled release property triggered by NIR laser. The released lysozyme molecules still maintain good bioactivity, which can efficiently decompose E. coli. Therefore, this work provides a novel strategy to build practical NIR-light-responsive MIPs for the extraction and application of biomacromolecules.
研究领域:
生物材料
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纳米技术
·
分子识别
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Acta Biomaterialia
·
2019
·
IF 6.638
Chanjuan Liu,Xiaolu Guo,Changping Ruan,Hailu Hu,Bang-Ping Jiang,Hong Liang,Xing-Can Shen
Near-infrared (NIR)-responsive hydrogels have exhibited remarkable advantages in biomedical applications especially for in situ therapeutic delivery, because of their deep-tissue penetration capacity, minimal invasiveness, and high spatiotemporal selectivity. Nevertheless, conventional NIR-responsive nanocomposite hydrogels suffer from the disadvantages of limited photothermal effect and potential leakage of the physically mixed photothermal nanoagents. To overcome these limitations, we herein designed an injectable thermosensitive photothermal-network hydrogel (PNT-gel) through the host-guest self-assembly of a photothermal conjugated polymers and ɑ -cyclodextrin. The conjugated-polymer backbones can directly convert incident light into heat, endowing the PNT-gel with high photothermal conversion efficiency (η = 52.6%) and enhanced photothermal stability. Meanwhile, the mild host-guest assembly enable the shear-thinning injectability, photothermally-driven and reversible gel-sol conversion of the hydrogel. Consequently, the remotely controlled on-demand release of doxorubicin (DOX) was achieved via photothermal-induced gel-sol transition. Because the backbone of the hydrogel absorbs NIR light and mediates the photothermal conversion itself, the PNT-gel demonstrated the advantage of a prolonged retention time and thus permitting repeatable NIR treatment after a one-time intratumoral injection of this hydrogel. Under repeated NIR laser irradiation (0.15 W cm −2 ), the synergistic photothermal-chemotherapy mediated by the PNT-gel almost completely eradicated 4T1 breast cancer. This work not only presents a multifunctional therapeutic platform integrated with inherent photothermal characteristic and reversible stimuli responsiveness for on-demand delivery and combinatorial photothermal-chemotherapy, but also provides a new strategy for the development of the next-generation of light-modulated intelligent hydrogels. Statement of Significance The conventional NIR-responsive nanocomposite hydrogels suffer from the disadvantages of limited photothermal effect and possible leakage of the physically mixed photothermal nano-components. To overcome these limitations, we hereby fabricated a NIR-responsive themosensitive photothermal-network hydrogel through the supramolecular assembly of conjugated polymer. The conjugated polymeric backbones of the hydrogel directly convert NIR light to heat, endowing the hydrogel with good photothermal effect and long-term photothermal stability. Meanwhile, the dynamic crosslinkages via supramolecular assembly enabled the shear-thinning injectability and reversible gel-sol transition of the hydrogel, facilitating the photothermal-induced drug release. Our strategy demonstrated the efficacy of using conjugated polymer as the backbone of hydrogel for the construction of a new injectable NIR-responsive hydrogel system with enhanced photothermal capabilities and improved therapy outcomes.
研究领域:
生物医学工程
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纳米医学
·
肿瘤治疗
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Wen Luo,Zhenzhen Li,Junjie Che,Xinyao Li,Huali Zhang,Jinxiu Tian,Chunyang Wang,GuiYing Li,Lin Jin
Anti-inflammatory and angiogenesis are two important factors in wound healing. Wound dressings with anti-inflammation and vascularization are essential to address complex interventions, expensive treatments, and uncontrolled release mechanisms. Based on the above considerations, we designed a near-infrared (NIR)-responsive hydrogel dressing, which is composed of mPDA-DFO@LA nanoparticles (mPDA: dopamine hydrochloride nanoparticles, DFO: deferoxamine, LA: lauric acid), valsartan (abbreviated as Va), and dopamine–hyaluronic acid hydrogel. The hydrogel dressing demonstrated injectability, bioadhesive, and photothermal properties. The results indicated the obtained dressing by releasing Va can appropriately regulate macrophage phenotype transformation from M1 to M2, resulting in an anti-inflammatory environment. In addition, DFO encapsulated by LA can be sustainably released into the wound site by NIR irradiation, which further prevents excessive neovascularization. Notably, the results in vivo indicated the mPDA-DFO@LA/Va hydrogel dressing significantly enhanced wound recovery, achieving a healing rate of up to 96% after 11 days of treatment. Therefore, this NIR-responsive hydrogel dressing with anti-inflammation, vascularization, and on-demand programmed drug release will be a promising wound dressing for wound infection.
研究领域:
生物医学工程
·
材料科学
·
药学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Physics
·
2022
·
IF 11.021
Xiaohang Luo,Xiaoxiao Dong,Hong Zhao,Travis Shihao Hu,Xiuping Lan,Lan Ding,Jiapeng Li,Huiqin Ni,Jordan A. Contreras,Hongbo Zeng,Quan Xu
Inspired by the microstructure of gecko toes, a drivable bionic gecko toe adhesion surface with double-layer structure was designed and fabricated. The driving ability is derived from the volume shrinkage of the dehydrated hydrogel after the driving hydrogel layer is irradiated by near-infrared light (808 nm) (the temperature of the single-layer hydrogel can be increased from 17.9 °C to 107 °C within 30s, and the curling angle can be curled by 0°–180°, similar to the folded state.), and another layer with a microstructure similar to gecko toes can withstand a maximum shear force of 22.4N/cm −2 . The different properties of the two layers are combined together to achieve a reversible transition of adhesion/desorption similar to the gecko walking process. The double-layer structure of the drivable bionic gecko toe adhesion surface was structurally optimized to prepare a four-arm gripper that could grasp/release only by unilateral irradiation. This bilayer-structured bionic gecko toe adhesion surface has great design potential, and in the future, it is hoped that it can provide insights into the preparation of large-actuated remote-controlled robots and fast-actuated soft robots .
研究领域:
材料科学
·
仿生学
·
软体机器人
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）