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  • 1
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    Online Resource
    Mechanical properties and thermostability of polyimide/mesoporous silica nanocomposite via effectively using the pores
    Wiley ; 2014
    In:  Journal of Applied Polymer Science Vol. 131, No. 23 ( 2014-12-05)
    Details
    In: Journal of Applied Polymer Science, Wiley, Vol. 131, No. 23 ( 2014-12-05)
    Abstract: Series of polyimide (PI)/mesoporous silica nanospheres (MSNs) nanocomposite films with different contents of MSNs were successfully prepared via a simple wet impregnation method. The morphologies, microstructures, mechanical properties, transmittance, and thermal properties of the prepared PI and the PI/MSNs nanocomposite films were investigated in detail. As a result, the thermal stability and mechanical performances of PI were obviously improved by incorporating MSNs into PI. The tensile stress and Young's modulus of the nanocomposite film with 5 wt % MSNs were raised up to 97.65 MPa and 2220.06 MPa, which are greatly higher than the values of 82.51 MPa and 1440.86 MPa for the pure PI film. Experimental results confirmed that the designed polymerization tactic, which occurred in the pores of the MSNs, facilitated to enhance the mechanical and physical performances of the PI/MSNs nanocomposite films, and definitely induced better integration between organic matrix and inorganic nanofillers. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 41173.
    Type of Medium: Online Resource
    ISSN: 0021-8995 , 1097-4628
    URL: Issue
    URL: Article
    DOI: 10.1002/app.v131.23
    DOI: 10.1002/app.41173
    Language: English
    Publisher: Wiley
    Publication Date: 2014
    detail.hit.zdb_id: 1491105-X
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  • 2
    Online Resource
    Online Resource
    Engineering Glucose Dehydrogenase to Favor Totally Synthetic Biomimetic Cofactors Containing Carboxyl Group
    Wiley ; 2023
    In:  ChemBioChem Vol. 24, No. 15 ( 2023-08)
    Details
    In: ChemBioChem, Wiley, Vol. 24, No. 15 ( 2023-08)
    Abstract: The utilization of unnatural nicotinamide cofactors for reactions catalyzed by oxidoreductases has gained increasing interest. Totally synthetic nicotinamide cofactor biomimetics (NCBs) are cost‐effective and convenient to synthesize. Thus, it has become increasingly important to develop enzymes that accept NCBs. Here, we have engineered Ss GDH to favor a newly synthesized unnatural cofactor 3‐carbamoyl‐1‐(4‐carboxybenzyl) pyridin‐1‐ium (BANA + ). Using in situ ligand minimization tool, sites 44 and 114 were identified as hotspots for mutagenesis. All the double mutants demonstrated 2.7–7.7‐fold improvements in catalytic activity, and the best double mutant E44D/E114 L exhibited 10.6‐fold increased catalytic efficiency toward BANA + . These results provide valuable information for the rational engineering of oxidoreductases with versatile NCBs‐dependency, as well as the design of novel biomimetic cofactors.
    Type of Medium: Online Resource
    ISSN: 1439-4227 , 1439-7633
    URL: Issue
    URL: Article
    DOI: 10.1002/cbic.v24.15
    DOI: 10.1002/cbic.202300066
    RVK:
    VA 2918
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2020469-3
    SSG: 12
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  • 3
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    In Situ Surface‐Initiated ATRP Mediated by Gallium‐Based Liquid Metal Nanodroplets
    Wiley ; 2023
    In:  Macromolecular Rapid Communications Vol. 44, No. 12 ( 2023-06)
    Details
    In: Macromolecular Rapid Communications, Wiley, Vol. 44, No. 12 ( 2023-06)
    Abstract: Surface‐initiated atom transfer radical polymerization (SI‐ATRP) is one of the most popular methods for surface modifications with functional polymer films, which has attracted significant attention in recent years. Herein, a facile method of gallium‐based liquid metal (GLM) nanodroplets mediated SI‐ATRP to prepare polymer brushes on GLM surfaces is reported. The ATRP initiator modified GLM (GLM‐Br) nanodroplets act as a substrate for the in situ SI‐ATRP and participate as a reducing agent to reduce Cu(II) deactivators to Cu(I) activators. UV–vis spectra confirm the feasibility of the in situ SI‐ATRP and indicate that the thickness and density of polymer brushes play an important role in performing a successful ATRP on GLM nanodroplets surfaces. Homo‐ and block copolymers, poly(3‐sulfopropyl methacrylate potassium salt) (PSPMA) and poly((2‐dimethylamino)ethyl methacrylate‐ b ‐(3‐sulfopropyl methacrylate potassium salt)) P(DMAEMA‐ b ‐SPMA) are successfully grafted to the GLM nanodroplets. Polymer brushes modified GLM nanodroplets show potential applications such as friction reduction and oil‐water emulsion separation. GLM nanodroplets mediated SI‐ATRP provides a novel and robust approach to preparing multifunctional GLM nanodroplets for different applications.
    Type of Medium: Online Resource
    ISSN: 1022-1336 , 1521-3927
    URL: Issue
    URL: Article
    DOI: 10.1002/marc.v44.12
    DOI: 10.1002/marc.202300029
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 1475027-2
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  • 4
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    Online Resource
    Disability and health‐related quality of life in Chinese patients with rheumatoid arthritis: A cross‐sectional study
    Wiley ; 2018
    In:  International Journal of Rheumatic Diseases Vol. 21, No. 9 ( 2018-09), p. 1709-1715
    Details
    In: International Journal of Rheumatic Diseases, Wiley, Vol. 21, No. 9 ( 2018-09), p. 1709-1715
    Abstract: The objective of this study was to evaluate the impact of rheumatoid arthritis ( RA ) on physical function and health‐related quality of life ( HRQ oL) in China. Method A cross‐section survey was conducted in 21 general hospitals in China. Eight hundred and seven patients were recruited. Data on demographics, clinical data, physical function (Stanford Health Assessment Questionnaire Disability Index, HAQ ‐ DI ) and HRQ oL (Study Short Form 36 Health Survey, SF ‐36) were collected on site. Results In our cohort, physical function was impaired in 77.6% of patients ( HAQ ‐ DI 〉 0). The median (interquartile range, IQR ) of HAQ ‐ DI was 0.750 (0.125, 1.500). Rated by HAQ ‐ DI 0‐1, 〉 1‐2, and 〉 2‐3, percentage of patients with mild, moderate and severe disability was 61.0%, 25.4%, and 13.6%, respectively. Older age, long disease duration, presence of extra‐articular manifestations, tender joint count ( TJC ), overall status (assessed by patient Global Visual Analogue Scale [G‐ VAS ] and physician G‐ VAS ) and lacking disease‐modifying anti‐rheumatic drugs were identified as predictive factors for worse physical function ( P  〈   .05). The composite scores of SF ‐36 in the observed patients were: physical component summary 40.4 ( IQR 27.4, 60.3), and mental component summary 49.0 ( IQR 33.6, 70.9). Impaired physical health may be predicted by low income, presence of extra‐articular manifestations, TJC , patient G‐ VAS and high HAQ ‐ DI . Predictors for suboptimal mental health were low income, physical labor, married status, increased swollen joint count ( SJC ), physician G‐ VAS and high HAQ ‐ DI . Conclusion Rheumatoid arthritis has profound effects on physical function and HRQ oL in Chinese patients. Patients with identified predictive factors for poor outcome should be closely monitored.
    Type of Medium: Online Resource
    ISSN: 1756-1841 , 1756-185X
    URL: Issue
    URL: Article
    DOI: 10.1111/apl.2018.21.issue-9
    DOI: 10.1111/1756-185X.13345
    Language: English
    Publisher: Wiley
    Publication Date: 2018
    detail.hit.zdb_id: 2427877-4
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  • 5
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    Implantable application of polymer‐based biosensors
    Wiley ; 2022
    In:  Journal of Polymer Science Vol. 60, No. 3 ( 2022-02), p. 328-347
    Details
    In: Journal of Polymer Science, Wiley, Vol. 60, No. 3 ( 2022-02), p. 328-347
    Abstract: Implantable sensors offer a great opportunity to extract physiological information from inside the body by real‐time monitoring. With the demand for personal healthcare and point‐of‐care treatment, a long‐term stable sensor of excellent mechanical and biological compatibility with human organs is urgently required. In contrast to rigid electronic devices using silicon or metallic materials, soft sensors are realized by flexible polymers in a simple way, endowing the implantable sensor with a tissue‐mimetic structure. In this article, we systematically review the development of implantable electronic sensors based on polymer materials. The unique properties of polymers are introduced, followed by their applications in implantable device fabrication. Strategies to integrate polymers with implantable sensors, encompassing device interface, geometry, and integration, are also summarized. Furthermore, biosensing applications of polymer‐based implantable devices are described, ranging from physical stimulus monitoring to biochemical analysis in vivo. Finally, we envision how advances in polymer materials may facilitate the development of intelligent sensors with broader applications in vivo.
    Type of Medium: Online Resource
    ISSN: 2642-4150 , 2642-4169
    URL: Issue
    URL: Article
    DOI: 10.1002/pola.v60.3
    DOI: 10.1002/pol.20210543
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 3004641-5
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  • 6
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    Dynamic trends in skin barrier function from birth to age 6 months and infantile atopic dermatitis: A Chinese prospective cohort study
    Wiley ; 2021
    In:  Clinical and Translational Allergy Vol. 11, No. 5 ( 2021-07)
    Details
    In: Clinical and Translational Allergy, Wiley, Vol. 11, No. 5 ( 2021-07)
    Abstract: Skin barrier functions develop after birth and may be related to skin disorders in infants. We aimed to assess associations between dynamic trends of four skin barrier functional parameters in early life with infant atopic dermatitis (AD). Methods Based on the prospective cohort MKNFOAD (NCT02889081), we examined transepidermal water loss (TEWL), stratum corneum hydration (SCH), skin pH, and sebum content at five anatomical sites (cheek, forehead, forearm, abdomen, and lower leg) in 418 term infants at birth, 42 days, and 6 months. Trend differences by sex and association with AD at age 1 year were tested using variance analyses. Associations of the parameters with AD risk were tested using discrete time survival analysis, adjusting extensive covariates including parental history of allergy, infant’s sex, birth weight (kg), and delivery mode. Odds ratios (ORs) and 95% confidence interval (CIs) were reported. Results Overall TEWL and SCH appeared trends of increase while skin surface pH and sebum content showed trends of decrease within the first six postnatal months. Sex differences were significant for sebum content only ( p   〈  0.001). After adjustment for parental and children covariates, cheek TEWL at birth (OR = 1.26, 95% CI 1.00–1.57, p  = 0.045) and 42 days (OR = 1.52, 95% CI 1.17–1.97, p  = 0.002) were significantly associated with increased AD risk. Associations were not observed between SCH, skin pH, and sebum content at birth or 42 days with AD. Conclusions Skin barrier functions of Chinese term infants varied nonlinearly after birth. Higher postnatal TEWL levels in early life indicate higher risk of early‐onset AD.
    Type of Medium: Online Resource
    ISSN: 2045-7022 , 2045-7022
    URL: Issue
    URL: Article
    DOI: 10.1002/clt2.v11.5
    DOI: 10.1002/clt2.12043
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2630865-4
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  • 7
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    Promoting the Water‐Reduction Kinetics and Alkali Tolerance of MoNi 4 Nanocrystals via a Mo 2 TiC 2 T x Induced Built‐In Electric Field
    Wiley ; 2022
    In:  Small Vol. 18, No. 15 ( 2022-04)
    Details
    In: Small, Wiley, Vol. 18, No. 15 ( 2022-04)
    Abstract: Mo‐Ni alloy‐based electrocatalysts are regarded as promising candidates for the hydrogen evolution reaction (HER), despite their vulnerable stability in alkaline solution that hampers further application. Herein, Mo 2 TiC 2 T x MXene, is employed as a support for MoNi 4 alloy nanocrystals (NCs) to fabricate a unique nanoflower‐like MoNi 4 –MX n electrocatalyst. A remarkably strong built‐in electric field is established at the interface of two components, which facilitates the electron transfer from Mo 2 TiC 2 T x to MoNi 4 . Due to the accumulation of electrons at the MoNi 4 sites, the adsorption of the catalytic intermediates and ionic species on MoNi 4 is affected consequently. As a result, the MoNi 4 –MX 10 nanohybrid exhibits the lowest overpotential, even lower than 10% Pt/C catalyst at the current density of 10 mA cm −2 in 1 m KOH solution (122.19 vs 129.07 mV, respectively). Furthermore, a lower Tafel slope of 55.88 mV dec −1 is reported as compared to that of the 10% Pt/C (65.64 mV dec −1 ). Additionally, the MoNi 4 –MX 10 catalyst also displays extraordinary chemical stability in alkaline solution, with an activity loss of only 0.15% per hour over 300 h of operation. This reflects the great potential of using MXene‐based interfacial engineering for the synthesis of a highly efficient and stable electrocatalyst.
    Type of Medium: Online Resource
    ISSN: 1613-6810 , 1613-6829
    URL: Issue
    URL: Article
    DOI: 10.1002/smll.v18.15
    DOI: 10.1002/smll.202107541
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2168935-0
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