Journal of Materials Chemistry A
·
2014
·Vol. 2
·期 19
·6734-6739
·
IF 0
Riming Nie,Aiyuan Li,Xianyu Deng
Appropriate interfacial modification plays an important role in the high performance of organic solar cells. We report that a transparent cathode of indium tin oxide (ITO) modified with an ultrathin layer of peptide, an environmentally friendly biomaterial, shows an obvious reduction in the work function. Investigation of the device exhibits that the power conversion efficiency (PCE) was significantly increased from 2.12% to 8.13% with the use of the peptide modification. The inverted device with the peptide-modified ITO as the cathode showed significantly longer time efficiency delay in air than conventional forward devices with an active metal as the cathode. Because peptides are biological materials that exist naturally in living things, the results provide an environmentally safe method to fabricate highly efficient and air-stable organic solar cells.
研究领域:
材料科学
·
可再生能源
·
界面工程
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DOI
IONICS
·
2019
·Vol. 26
·期 3
·1109-1117
·
IF 2.289
Xie Ming,Li Libo,Zhang Yonghong,Du Jintian,Li You,Shan Yuhang,Zheng Huanyu
In this work, an all-solid-state biomaterial electrolyte derived from phthaloyl starch and poly(vinylidene fluoride) (PVDF) was introduced. Phthaloyl starch (PS) was prepared with the starch and the phthalic anhydride via a chemical method. The introduction of C=O group through the starch esterification improved the migration of the lithium ions in the all-solid-state electrolyte membrane. The AC impedance test revealed that the addition of the phthaloyl starch promoted the conductivity of electrolytes, which can reach up to 2.04 × 10 −4 S cm −1 at room temperature, and the electrochemical stability window (ESW) can achieve 4.20 V. Herein, the phthaloyl starch-PVDF–based electrolyte membrane possessed the lithium-ion transference number of 0.396. The half-cell Li/SPE/LiFePO 4 had a better charge and discharge performance, that is, 93.9 mAh g −1 and 92.2 mAh g −1 after the 50th cycle at 0.5 C and at room temperature.
Graphical abstract
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2022
·Vol. 28
·期 67
·e202201968
·
IF 5.02
Shujue Xu,Shen Zhang,Yang Yu,Shengrui Zhang,Minjie Li
Graphical Au(I)-thiolate nanosheets with closely-packed multiple surface functional groups have been synthesized via a one-pot co-assembly strategy. The easy but powerful strategy addresses the surface engineering problem for 2D materials and paves the way for their wider applications in sensing and biomaterials. Two-dimensional (2D) Au(I)-thiolate assemblies are a special type of material that can balance high structural stability and rich surface functionality, which shows promising prospects in both fundamental research and applications. Co-assembly of multiple ligands is a facile way to further enrich the surface properties and functions, and expand their application potentials. In this work, taking 3-mercaptopropionic acid (MPA), cysteine (Cys) and 1-thioglycerol (TGO) as example ligands, we studied in detail the possibility to co-assemble them into one nanosheet. Although the three ligands have significantly different controllability and pathways when self-assembling individually with Au(I), they can still be effectively co-assembled by reacting with HAuCl 4 together to obtain three-ligand nanosheets with good colloidal stability. The key points for successful co-assembly are also revealed by comparing single- and three-ligand self-assembly processes, laying a solid foundation for co-assembly of even more ligands. The easy but powerful strategy for 2D materials with closely-packed and multiple tunable surface functional groups addresses the surface engineering problem for 2D materials and paves the way for their wider applications in sensing and biomaterials.
研究领域:
材料科学
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化学
·
生物医学工程
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Xiaojie Fang,Sidi Zhu,Jianzhe Ma,Fengyun Wang,Haihua Xu,Mingzhu Xia
In this paper, a simple chemical precipitation method was proposed to obtain zoledronate functionalized hydroxyapatite (zole-HAP) hybrid nano- biomaterials (zole-HAP-HNBM) which were firstly applied to adsorption. The characterizations of materials verified that the addition of zoledronate declined the crystallinity and transformed the morphology of HAP from short rod shape to microsphere, changed micro structure of the hybrid nanobiomaterial. Adsorption experiments carried out under different conditions showed that adsorption capacity of the nanobiomaterial, enhanced by the addition of zoledronate in preparation, which is equal to 1460.14 mg/g on Pb 2+ and 226.33 mg/g on Cu 2+ in optimum qualifications, was elevated more than the reported values in many literatures. At last, the sorption mechanisms of HAP and zole-HAP for Pb 2+ and Cu 2+ were probed by experiments and Multifwn program calculation in details. It suggested that the dominant sorption mechanisms of HAP for Pb 2+ were ion exchange and dissolution-precipitation rather than surface complexation, while besides the dissolution-precipitation mechanism, surface complexation may contribute more in the adsorption process of 10zole-HAP for Pb 2+ . Once considering HAP and 10zole-HAP, removal mechanisms of Cu 2+ could involve surface complexation and ion exchange.
研究领域:
材料科学
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环境科学
·
生物学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
·
IF 8.2
Caixia Sun,Hao Ma,Fuce Yu,Shuqian Xia
Emulsification viscosity reduction and subsequent demulsification are effective strategies to improve the utilization rate of heavy oil. However, traditional surfactants are challenged by unsatisfactory salt tolerance, inadequate stability in emulsification, difficulty in demulsification and pollution problem of oily wastewater discharge. To realize the feasibility and environment-friendliness of heavy oil utilization in the harsh reservoir environments, we designed a functional polymer and conducted a comprehensive evaluation using heavy oil samples from Chenping oil well in Shengli Oilfield. It was synthesized by grafting two hydrophobic monomers, lauryl methacrylate (LMA) and N, N–Diethylaminomethyl methacrylate (DEAEMA), onto the hydrophilia hydroxyethyl cellulose (HEC) by free–radical polymerization. The viscosity reduction rate can reach 99.57 % even under the high salinity of 26,050 mg/L. The stable oil–in–water (O/W) emulsion can be maintained for >48 h, satisfying the actual requirements for heavy oil recovery. Moreover, the emulsion can be completely demulsified in a CO 2 atmosphere within 30 min, suggesting its satisfactory demulsification performance. Our study achieved the one–step transformation of heavy oil emulsion between emulsification and demulsification, which provides a green bio–based material and an ingenious strategy for enhanced oil recovery and other chemical engineering applications including oil/water separation.
研究领域:
石油工程
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2018
·
IF 3.997
Meng Xiao,Jiangwei Xiao,Gang Wu,Yu Ke,Liming Fang,Chunlin Deng,Hua Liao
Protein adsorption on biomaterial surfaces is clinically applied to increase therapeutic effects; however, this adsorption is possibly accompanied by conformational changes and results in loss of protein bioactivity or adverse reactions. In this research, a transforming growth factor β1 (TGF-β1) affinitive peptide HSNGLPL was grafted onto biopolymer surface to stabilize TGF-β1 spatial conformation after adhesion. The peptide with azide end group was combined with the propynyl pendant group on polyurethane via copper-catalyzed azide–alkyne cycloaddition (CuAAC) click reaction. The final polymer was characterized by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance spectroscopy, which indicated that the affinitive peptide was introduced to the polymer. Quartz crystal microbalance with dissipation (QCM-D) was performed to monitor TGF-β1 adsorption and desorption on the surfaces coated with polyurethane with and without peptide combination. Results showed that TGF-β1 adhered on polyurethane surface and formed a compact and rigid layer. This layer showed spatial structural change but presented a loose and diffuse layer on the peptide-grafted polyurethane surface, indicating stable spatial conformation after adherence. Similar regulations were observed on the two surfaces where BSA layer was coated in advance. In vivo animal experiments revealed that immune reactions and tissue regenerations occurred earlier on peptide-modified polyurethane than on polyurethane, which did not undergo peptide grafting. This finding confirmed that affinitive interactions may preserve TGF-β1 bioactivity on polymer surface after adsorption.
研究领域:
生物材料
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生物医学工程
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蛋白质工程
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组织工程
✓ 已验证
DOI
PubMed
高影响因子
Gels
·
2025
·Vol. 11
·期 8
·654
·
IF 5.3
Juan Wang,Xu Han,Qingtai Li,Meng Qin,Bin Xue,Wenxu Sun,Yi Cao,Wei Sun
Hydrogels with spatially programmable mechanical properties hold great potential for use in biomedical applications. Inspired by the architecture of the cytoskeleton, we present a strategy for constructing tensegrity-structured hydrogels (TS-Gels) through enzyme-triggered crystal growth to enable precise mechanospatial manipulation. Specifically, alkaline phosphatase (ALP) was covalently anchored to a polyacrylamide (PAAm) hydrogel matrix to catalyze the in situ dephosphorylation of phosphotyrosine precursors, leading to the formation of rigid tyrosine crystals. These crystals functioned as compressive sticks, establishing tensegrity structures within the hydrogel network. By tuning the crystallization kinetics, both the structural morphology and mechanical reinforcement could be precisely controlled. The resulting TS-Gels exhibited significantly enhanced local tensile strength and stiffness, allowing for spatial–mechanical patterning via photo-initiated printing, mold-assisted shaping, and laser engraving. Furthermore, the unique mechanospatial tunability of TS-Gels was demonstrated in tribological surface engineering, underscoring their potential for use in tissue engineering and responsive biomaterials.
研究领域:
生物材料
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组织工程
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软物质物理
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材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Chemistry Central Journal
·
2013
·Vol. 7
·期 1
·1-11
·
IF 1.312
Zuo Ping-Ping,Feng Hua-Feng,Xu Zhi-Zhen,Zhang Ling-Fan,Zhang Yu-Long,Xia Wei,Zhang Wen-Qing
Background Graphene oxide (GO)can be dispersed through functionalization, or chemically converted to make different graphene-based nanocomposites with excellent mechanical and thermal properties. Chitosan, a partially deacetylated derivative of chitin, is extensively used for food packaging, biosensors, water treatment, and drug delivery. GO can be evenly dispersed in chitosan matrix through the formation of amide linkages between them, which is different from previous reports focusing on preparing GO/chitosan nanocomposites through physical mixing. Results In this study, free-standing graphene oxide-chitosan (GO-chitosan) nanocomposite films have been prepared. The GO-chitosan films are biologically compatible and mechanically reinforced. Through the formation of amide linkages between GO’s carboxylic acid groups and chitosan's amine groups, GO could be evenly dispersed within the chitosan matrix. We also characterized the GO-chitosan composite films using element analysis, Fourier transform infrared spectroscopy, X-ray photo electron spectroscopy, differential scanning calorimetry, and thermo gravimetric analysis. Compared to pristine chitosan film, the tensile strength of GO-chitosan film is improved by 2.5 folds and Young’s modulus increases by nearly 4.6 folds. The glass transition temperature of GO-chitosan composite film shifts from 118°C to 158°C compared to the pristine chitosan, indicating its enhanced thermal stability. GO-chitosan composite film was also evaluated for its biocompatibility with C3H10T1/2 cells by in vitro fluorescent staining. The graphene oxide-reinforced chitosan composite films could have applications in functional biomaterials. Conclusion The present study describes a useful and simple method to chemically attach biocompatible chitosan onto graphene oxide. We envision that the GO-chitosan film will open avenues for next-generation graphene applications in the realm of functional biomaterial.
研究领域:
材料科学
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生物材料
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纳米技术
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
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
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组织工程学
·
高分子化学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2015
·
IF 2.999
Xiwei Liu,Jianke Sun,Kejin Qiu,Yinghong Yang,Zhongjie Pu,Li Li,Yufeng Zheng
Zn, a promising biodegradable material , possesses excellent biocompatibility and biodegradability, however its low strength and hardness largely limit its application in biodegradable implants. The addition of alloying elements would generally be suggested as an effective method for improving the mechanical properties. In the current study, alloying with a minor amount of Ca or Sr in Zn–1.5Mg alloy, the ternary alloys were composed of the matrix Zn and precipitated phase (Mg 2 Zn 11 and CaZn 13 for Zn–1.5Mg–0.1Ca alloy, Mg 2 Zn 11 and SrZn 13 for Zn–1.5Mg–0.1Sr alloy, respectively). Besides, the grain size of ternary alloys became more homogeneous and smaller than that of Zn–1.5Mg alloy. Meanwhile, the effect of alloying elements on the mechanical properties and corrosion behavior of Zn–1.5Mg alloy were analyzed. The results showed that the ternary alloys exhibited much higher yield strength (YS), ultimate tensile strength (UTS) and elongation than those of Zn–1.5Mg alloy. The measured corrosion rates of the ternary alloys were slightly increased due to galvanic corrosion reaction. Besides, a model of the corrosion mechanism in the simulated body fluid was discussed here based on the results of the studied alloys.
研究领域:
生物材料学
·
生物医学工程
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金属腐蚀与防护
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可降解植入材料
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生物力学
✓ 已验证
DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2025
·Vol. 23
·期 1
·1-20
·
IF 12.6
Yang Jinghong,Li Runli,Wang Xiaoshuang,Lu Dongheng,Li Weichang,Wang Yan
Irregular alveolar bone defects pose persistent clinical challenges due to their complex morphology and the lack of biomaterials that simultaneously provide structural integrity, biocompatibility, and dynamic osteoinductive potential. Herein, we report a fiber-reinforced, dual-network hydrogel system (OHADN fiber@Yoda1 hydrogel) engineered to recapitulate mechanobiological cues for enhanced bone regeneration. This injectable hydrogel integrates oxidized hyaluronic acid (OHA) crosslinked with Yoda1-loaded PLGA-collagen fiber fragments and stabilized via catechol-Fe³⁺ coordination, forming a robust and self-healing structure. The fiber network enhances matrix stiffness and sustains Yoda1 release, promoting PIEZO1 activation in stem cells and enabling persistent mechanotransduction. In vitro, this system effectively regulates macrophage polarization, maintains cellular tension homeostasis, and significantly upregulates osteogenic markers via the PIEZO1–ITGα5 axis. Transcriptomic profiling and mechanistic validation revealed that focal adhesion and cytoskeletal signaling pathways are enriched upon hydrogel treatment. In a rat alveolar bone defect model, the OHADN fiber@Yoda1 hydrogel demonstrated superior bone volume restoration and trabecular architecture compared to conventional materials. This work presents a promising paradigm for spatiotemporal control of osteoimmune microenvironments through mechanoresponsive biomaterials.Graphical abstract
研究领域:
生物材料
·
组织工程
·
机械生物学
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再生医学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
EUROPEAN POLYMER JOURNAL
·
2025
·
IF 6.3
Fei Li,Jingquan Liu,Xiaole Gong,Fan Qiao,Junhui Chen,Honglei Liu
Spiropyran (SP), a classical photochromic molecule, exhibits reversible structural isomerization under stimuli such as light irradiation, pH changes, and solvent variations. However, its practical application in solid-state materials is still hindered by challenges such as molecular aggregation and fluorescence quenching. In this work, we developed photochromic SP-grafted sodium alginate derivatives via a green and efficient synthetic strategy, which combines the stimuli-responsive properties of SP with the processability of alginate. Through sequential amidation under mild conditions, carboxylated SPs were grafted onto sodium alginate, enabling the synthesis of novel biomaterials with tunable fluorescence. The synthesized biomaterials exhibit reversible color changes under UV/visible light. Processed into films, fibers, and microspheres via ionic crosslinking with Ca 2+ , these materials showcased applications in fluorescence patterning, textile integration, and solvent detection.
研究领域:
材料科学
·
高分子化学
·
生物工程
·
光学材料
·
纳米技术
✓ 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）