CARBOHYDRATE POLYMERS
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2021
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IF 9.381
Jinping Ren,Furong Tao,Xifeng Lu,Hailong Zhang,Ligang Gai,Libin Liu,Haihui Jiang
Multicolored superhydrophobic coating with high durability has been receiving tremendous attention in decorative applications. Herein, a facile method to fabricate multicolored superhydrophobic coating with excellent robustness has been developed by using cellulose and chitosan. The multicolored coatings can be obtained through single dyeing or mixed dyeing based on three primary dyes. The coating can be applied on hard substrates (e.g. glass, aluminum sheet) and soft substrates (e.g. cotton fabric) by diverse methods including spraying, dip-coating and painting. The colorful coating firmly adheres to the substrates due to the multiple interactions (siloxane covalent bonds and hydrogen bonds). The colorful coating exhibits water-repellant behaviors and can withstand sandpaper abrasion, tape-peeling cycles, water impact, salt spray test and UV environments. Furthermore, the multicolored coating can be used as a new type of pigment for painting on different substrates and is expected to have a huge potential application in technological design or decoration.
研究领域:
材料科学
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生物学
✓ 已验证
DOI
高影响因子
JOURNAL OF LUMINESCENCE
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2024
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IF 3.3
Chaochao Tao,Feiyan Xie,Chongfeng Guo,Lin Liu,Ruilong Wei,Mengxia Xu,Houfa Mao,Hualan Xu,Sheng liang Zhong
Persistent luminescence (PersL) has drawn intense attention because of its widely practical applications. Dynamic color-tunable PersL is desired and fascinating for advanced anti-counterfeiting, information storage, etc. However, it is difficult to obtain and rarely reported. Herein, a simple and effective method by using coordination polymers (CPs) as precursors is designed for color-tunable zinc-cadmium silicate composites PersL phosphors. Compared with pure Zn 2 SiO 4 (ZSO) and CdSiO 3 (CSO), the composites (ZSO/CSO) exhibit significantly improved brightness and dynamic tunable color. With time evolution, the color varied from white to yellow to orange and finally even to red. Notably, the duration time of 1.0 % Dy 3+ doped ZSO/CSO is prolonged to 19000 s (>5 h) at the threshold value (0.32 mcd/m 2 ) after 254 nm irradiation, showing a more than 100-fold enhancement compared with CSO. In attempt to achieve a better understanding of the enhanced mechanisms, the formation energy of Dy 3+ and O-vacancy are accurately derived from first-principles calculations. Combined with thermoluminescence (TL) measurement, the PersL mechanism is proposed. Finally, the application of ZSO/CSO:1.0 % Dy 3+ in displaying and anti-counterfeiting was explored. This work not only provides a new way to the design of PersL phosphors through composite compounds, but also promotes the development of PersL phosphors in practical applications.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2024
·
IF 13
Yating Zhou,Xianzhu You,Wenying Liu,Wei Yang,Xuru Jin,Xiaopeng Pei,Sheng Xiang,Hua Zhou,Zhiyong Liao,Ying Tan
Structural colors generated via total internal reflection (TIR) using nanostructure-free micro-concave shapes have garnered increasing attention. However, the application of large micro-concave structures for structural coloration remains limited. Herein, a flexibly tunable structural color film fabricated by casting polydimethylsiloxane (PDMS) on an array of large poly(glycidyl methacrylate) (PGMA) bowl-shaped particles is reported. The resultant film exhibits tunable red to green structural colors with changing observation angles. Moreover, the color can be further tailored by altering the shape of the film itself. The incorporation of the PDMS layer not only facilitates a shift in the locus of TIR from the bottom surface to the top concave surface of the particles, thereby enabling the generation of structural color, but also confers enhanced flexibility to the film. Further decoration with silver nanoparticles imparts antimicrobial properties, yielding a novel antimicrobial coating material with structural colors. The simple and cost-effective strategy for the production of structural color films provides potential applications in antimicrobial coatings, enabling accessible and customizable structural coloration using big-size micro-concave particles.
研究领域:
材料科学
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光学
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纳米技术
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涂层与薄膜
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
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2017
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IF 4.162
Mei-Ling Chen,Shu-Chao Pang,Xue-Min Chen,Yi-Zhang,Lei Li
Developing a nanoscale drug delivery system with magnetic resonance imaging (MRI)/fluorescence imaging (FL) visibility to optimize the delivery efficiency and therapeutic efficacy under image guidance has attracted great attentions in the area of nanomedicine . Herein, a novel permeable yolk-shell structured gadolinium-doped quantum dots nanocomposite was synthesized as a theranostic nanocarrier via an indirectly doping method. The as-prepared permeable nanoparticles with tunable color fluorescent emission, paramagnetic and accessible mesoporous channels could be developed as a novel nanomedical platform for integrated multimodal diagnosis and therapy. The hydrophilic nanocomposites exhibited tunable fluorescence as well as high longitudinal relaxivity (r 1 = 17.32 mM −1 s −1 ) in water with good colloidal stability. In vivo animal experiments further verified CSSP could achieve FL/MRI dual modality imaging. The widely used antineoplastic anthracycline drug doxorubicin (DOX) was absorbed into the permeable nanospheres with 95.3% loading efficiency and released in a pH-sensitive pattern. In vitro cancer cell cytotoxicity tests verified that the DOX-loaded nanocomposites had enhanced cytotoxicity compared with free DOX at the same concentration. The as-prepared nanocomposites present great potential as MRI/FL-visible nanoscale drug carrier to realize imaging-guided personalized therapy.
研究领域:
纳米医学
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药物递送系统
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分子成像
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癌症治疗
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材料科学
✓ 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）