RSC Advances
·
2023
·Vol. 13
·期 30
·20512-20519
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IF 3.9
Yang Shen,Baoqu Zhang,Zihan Yi,Lan Zhang,Jing Ling,Shibo Wang,Zhichao Sun,M. Zubair Iqbal,Xiangdong Kong
Catheter embolization is a minimally invasive technique that relies on embolic agents and is now widely used to treat various high-prevalence medical diseases. Embolic agents usually need to be combined with exogenous contrasts to visualize the embolotherapy process. However, the exogenous contrasts are quite simply washed away by blood flow, making it impossible to monitor the embolized location. To solve this problem, a series of sodium hyaluronate (SH) loaded with bismuth sulfide (Bi2S3) nanorods (NRs) microspheres (Bi2S3@SH) were prepared in this study by using 1,4-butaneglycol diglycidyl ether (BDDE) as a crosslinker through single-step microfluidics. Bi2S3@SH-1 microspheres showed the best performance among other prepared microspheres. The fabricated microspheres had uniform size and good dispersibility. Furthermore, the introduction of Bi2S3 NRs synthesized by a hydrothermal method as Computed Tomography (CT) contrast agents improved the mechanical properties of Bi2S3@SH-1 microspheres and endowed the microspheres with excellent X-ray impermeability. The blood compatibility and cytotoxicity test showed that the Bi2S3@SH-1 microspheres had good biocompatibility. In particular, the in vitro simulated embolization experiment results indicate that the Bi2S3@SH-1 microspheres had excellent embolization effect, especially for the small-sized blood vessels of 500–300 and 300 μm. The results showed the prepared Bi2S3@SH-1 microspheres have good biocompatibility and mechanical properties, as well as certain X-ray visibility and excellent embolization effects. We believe that the design and combination of this material has good guiding significance in the field of embolotherapy.
研究领域:
医学材料学
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介入放射学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2020
·Vol. 8
·期 27
·9286-9292
·
IF 7.059
Lizhen Jia,Miaomiao Li,Lixin Jiang,Haoqiang Gao,Haiying Tan,Bolun Peng,Jiangping Xu,Lianbin Zhang,Jintao Zhu
Invisible photonic prints are patterned photonic materials that can reveal hidden patterns under certain stimuli, which are widely used in anti-counterfeiting, identification marking, encoding, and dynamic displays. Traditionally, such photonic prints can be obtained through patterning photonic hydrogels with different responsive polymers. Yet, the visibility of the revealed prints is still not satisfactory due to the limited contrast between the responsive and non-responsive regions. In this study, we report revealable photonic prints with high visibility by patterning photonic hydrogels with two oppositely pH-responsive polymers comprising weak acidic and weak basic groups. The two distinct pH-responsive polymers can be protonated and deprotonated in the same environment, triggering the variation of colors from the initial state to the opposite directions in the different regions of the photonic prints. Therefore, the contrast of the photonic patterns is greatly improved, increasing the naked-eye detection range of colorimetric sensing. This study provides a new opportunity for designing patterned photonic materials for use in improved visual sensors.
研究领域:
材料科学
·
化学
·
传感器技术
✓ 已验证
DOI
高影响因子
Small
·
2016
·Vol. 13
·期 3
·1602565
·
IF 8.315
Feihu Li,Bingtao Tang,Suli Wu,Shufen Zhang
The synthesis and assembly of monodispersed colloidal spheres are currently the subject of extensive investigation to fabricate artificial structural color materials. However, artificial structural colors from general colloidal crystals still suffer from the low color visibility and strong viewing angle dependence which seriously hinder their practical application in paints, colorimetric sensors, and color displays. Herein, monodispersed polysulfide (PSF) spheres with intrinsic high refractive index (as high as 1.858) and light-absorbing characteristics are designed, synthesized through a facile polycondensation and crosslinking process between sodium disulfide and 1,2,3-trichloropropane. Owing to their high monodispersity, sufficient surface charge, and good dispersion stability, the PSF spheres can be assembled into large-scale and high-quality 3D photonic crystals. More importantly, high structural color visibility and broad viewing angle are easily achieved because the unique features of PSF can remarkably enhance the relative reflectivity and eliminate the disturbance of scattering and background light. The results of this study provide a simple and efficient strategy to create structural colors with high color visibility, which is very important for their practical application.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYST
·
2020
·Vol. 145
·期 10
·3528-3534
·
IF 3.978
Zhijian Mai,Hao Li,Yixun Gao,Yue Niu,Yongrui Li,Nicolaas Frans de Rooij,Ahmad Umar,M. S. Al-Assiri,Yao Wang,Guofu Zhou
A tetraphenylethylene (TPE) derivative (N,N-dimethyl-N′-(4-(1,2,2-triphenylvinyl)phenyl)acetimidamide, TPE-amidine) was designed and synthesized, and used to prepare visible CO2 chemosensors, TPE-amidine-L (liquid) and TPE-amidine-S (solid). The hydrophilicity of TPE-amidine thoroughly changed because of the unique reversible reaction between the amidine group and CO2, which controlled the molecular aggregation extent in water by CO2. Combining with the well-known aggregate-induced emission effect, the highly selective CO2 chemosensor TPE-amidine-L was developed, which has the lowest CO2 detection limit of 24.6 ppm compared with other reported CO2 chemosensors, and can be regenerated within 10 s by adding triethylamine. With the aim of being safer and more convenient to use, a polyacrylamide hydrogel containing TPE-amidine was prepared as a renewable CO2 sensing “tape” (TPE-amidine-S). The flexibility, adhesivity, CO2 sensitivity and reversibility of the “tape” is systematically investigated, showing great potential for “on-site” and “real-time” CO2 detection in practical applications.
研究领域:
化学
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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
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Miao Kong,Xiaoyu Guo,Shufen Zhang,Yuang Zhang,Bingtao Tang
Intelligent textiles with structural color have attracted special attentions due to their great potentials in various advanced photonic applications. Thus, a mechanism for endowing structural colored textiles with high color visibility, stability, and intelligent thermoregulating performance is significant for the development of intelligent textiles. Herein, structural colored textiles with high color visibility and stability for intelligent thermoregulating performance were designed and prepared. Among them, amorphous photonic structures (APSs) assembled on textiles show high color visibility based on the background light shielding effect of polysulfide microspheres. Purple, green, orange, and red structural colors can be obtained by the sizes of polysulfide microspheres containing of 185, 198, 211, and 230 nm. Waterborne polyurethane phase change material (WPUPCM) is utilized as an adhesive to secure APSs, thereby enhancing the structural stability between APSs and textiles, including mainly the internal infiltration and surface encapsulation. The flexibility and stability of the obtained structural colored textiles can be verified by folding, rinsing, and kneading tests. More importantly, the phase change temperature of the prepared WPUPCM is 37.0 °C, and the enthalpy of melting phase change is 74.7 J/g. The textiles begin to regulate body temperature near the phase change temperature to adapt to the temperature change by absorbing and releasing energy. The thermoregulating performance of the textiles is evidenced by their ability to maintain temperature during heating and cooling tests. The combination of structural color and solid–solid phase change materials gives structural colored textiles thermoregulating performance, offering straightforward and convenient solutions for personal thermal management.
研究领域:
材料科学
·
纺织工程
·
智能材料
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Panmiao Liu,Tao Sheng,Zhuoying Xie,Jialun Chen,Zhongze Gu
High mechanical strength, highly visible, and admirable grafting molecular ability is the key challenge for colloidal photonic crystal (CPC) barcode beads in multiplex analysis fields. To achieve this goal, we proposed self-adhesion particles, polydopamine-coated SiO2 nanoparticles (PDA@SiO2), to construct CPC barcode beads by droplet-based microfluidic approach. Because of the adhesion, broad absorption of light, and “active” functional groups of PDA, the beads are endowed with high robustness, visibility, and excellent biomolecule immobilization. Ultrasonic treatment and compression experiments demonstrated that PDA@SiO2 CPC barcode beads have a high mechanical strength. Color analysis illustrated that PDA@SiO2 CPC beads exhibited a high visibility in color. The verification of fluorescent-tagged biomolecule conjugation together with the antigen detection stated that PDA@SiO2 CPC beads are capable of immobilizing biomolecule by covalent binding. With a sandwich format, the beads were applied to analyze the tumor makers including alpha fetal protein, carcinoembryonic antigen, and prostate specific antigen from practical clinical serum. The proposed suspension arrays using PDA@SiO2 CPC beads as a barcode showed acceptable accuracy and detection reproducibility.
研究领域:
材料科学
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生物技术
·
分析化学
·
医学诊断
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2022
·Vol. 10
·期 37
·7650-7660
·
IF 7.571
Niping Deng,Jinghang Li,Hao Lyu,Ruochuan Huang,Haoran Liu,Chengchen Guo
Soft actuators with stimuli-responsiveness have great potential in biomedical applications such as drug delivery and minimally invasive surgery. In this study, protein-based soft actuators with magnetic actuation are fabricated using naturally occurring silk proteins and synthesized Fe3O4 magnetic nanoparticles (NPs). Briefly, magnetic silk films are first prepared by solution casting of a mixture containing silk proteins, synthesized Fe3O4 NPs, and glycerol. The molecular structures of the magnetic silk films are characterized by FTIR spectroscopy, which show that the β-sheet content in the films is about 20%. The mechanical tests show that the magnetic silk films can be stretched to over 200% under wet conditions and Young's modulus is estimated to be 4.89 ± 0.69 MPa, matching the stiffness of soft tissues. Furthermore, the enzymatic degradability, good biocompatibility, and in vivo X-ray visibility of the films are demonstrated by the in vitro enzymatic degradation test, in vivo biocompatibility test, and micro-CT imaging, respectively. Degradable silk-based soft actuators with magnetic responsiveness are successfully prepared by thermal forming or plastic molding of the magnetic silk films. The fabricated soft actuators can be actuated and move with precise locomotive gaits in solutions using a magnet. In addition, the retention of the soft actuators and localized drug delivery in gastrointestinal tracts by attaching a magnet to the abdominal skin are demonstrated using model systems. The degradable silk-based soft actuators provide many opportunities for improving current therapeutic strategies in biomedicine.
研究领域:
生物医学工程
·
材料科学
·
纳米技术
·
药物递送系统
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）