CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Herui Zhao,Yanjie Zhang,Shiwei Yang,Chunwen Ye,Cong He,Yaqi Song,Yuxin Wang,Bojun Lin,Jingjie Yu
Dy 3+ and Eu 3+ co-doped phosphors have been emerged as potential candidate to generate high-quality white light under the ultraviolet (UV) or near ultraviolet (NUV) excitation for health and comfort lighting. Herein, K 2 Lu(WO 4 )(PO 4 ) crystal has been newly developed to accommodate rare earth ions, such as Dy 3+ and Eu 3+ ions, to achieve spectral tunability of high-quality white light. Under NUV excitation, Dy 3+ singly-doped K 2 Lu(WO 4 )(PO 4 ) phosphors exhibit the desired blue emission at 486 nm and yellow emission at 575 nm, attributed to the electric dipole transition 4 F 9/2 → 6 H 15/2 and the magnetic dipole transition 4 F 9/2 → 6 H 13/2 transitions of Dy 3+ ions, respectively. Interestingly, the emission color can be facilely adjusted from cold white light to pink light under 365 nm NUV excitation due to the co-doping of Eu 3+ ions in K 2 Lu(WO 4 )(PO 4 ): 0.05Dy 3+ sample. Further, the remote luminescent layers containing K 2 Lu(WO 4 )(PO 4 ): 0.05Dy 3+ , 0.20Eu 3+ phosphor can be printed on glass substrate by screen printing technique to generate high-quality white light with the correlated color temperature (CCT) of 5433 K and color rendering index (CRI) of 87. Moreover, the remote luminescent layers exhibit better heat dissipation performance compared to conventional encapsulated LEDs and can be used as a multicolor emitting candidate for high-power white LEDs.
研究领域:
材料科学
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光学工程
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产品关联
DOI
高影响因子
Scientific Reports
·
2016
·Vol. 6
·期 1
·1-10
·
IF 5.228
Feng Anchao,Liang Jiamei,Ji Jinzhao,Dou Jinbo,Wang Shanfeng,Yuan Jinying
Despite numerous studies on utilizing polymeric vesicles as nanocapsules, fabrication of tunable molecular pathways on transportable vesicle walls remains challenging. Traditional methods for building penetrated channels on vesicular membrane surface often involve regulating the solvent polarity or photo-cross-linking. Herein, we developed a neat, green approach of stimulation by using CO 2 gas as “molecular drill” to pierce macroporous structures on the membrane of polymersomes. By simply introducing CO 2 /N 2 gases into the aqueous solution of self-assemblies without accumulating any byproducts, we observed two processes of polymeric shape transformation: “gas breathing” and “gas piercing.” Moreover, the pathways in terms of dimension and time were found to be adjustable simply by controlling the CO 2 stimulation level for different functional encapsulated molecules in accumulation, transport, and releasing. CO 2 -breathing and piercing of polymersomes offers a promising functionality to tune nanocapsules for encapsulating and releasing fluorescent dyes and bioactive molecules in living systems and also a unique platform to mimic the structural formation of nucleus pore complex and the breathing process in human beings and animals.
研究领域:
生物化学
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纳米医学
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材料科学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2016
·
IF 3.014
Chao Chen,Anqi Wei,Yanhong Li,Kechao Zhou,Dou Zhang
Ba 0.8 Sr 0.2 TiO 3 thin films with different concentrations of Co dopant (0–10 mol%) were deposited on Pt/Ti/SiO 2 /Si substrates by sol-gel method. The microstructure, surface morphology , dielectric and tunable properties of the films were investigated as a function of Co concentration. It was demonstrated that all the Co doped Ba 0.8 Sr 0.2 TiO 3 (BSTC) thin films exhibited dense microstructure with uniform crystal grains and the grain size of the BSTC films decreased with the increase of Co content. Both dielectric constant and loss decreased with the increase of Co dopant. It was proposed that the depressed dielectric loss in BSTC film originated from the reduction of intrinsic electrons by Co acceptor doping . Although tunability of the BSTC films was also reduced with the addition of Co dopant, a largest figure of merit of 4.5 was obtained in the BSTC film with 5 mol% Co dopant owing to the comparable tunability and low dielectric loss of the films, which made it an alternative source for potential tunable applications.
研究领域:
材料科学
·
电子工程
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DOI
高影响因子
CRYSTENGCOMM
·
2025
·
IF 2.6
Yanjun Wu,Jiaojiao Song,Jiang Wang,Qi Shi
In this work, ZIF-300 and ZIF-301 derivatives with tunable ellipsoidal cage sizes were synthesized by adjusting the ratio between the small-sized mIm and large-sized bbIm/cbIm ligands. During ZIFs synthesis, when the amount of the fixed ligand is equimolar to Zn²⁺, adjusting the content of the other ligand does not yield a continuously tunable structure. In contrast, maintaining an excess of one ligand relative to Zn²⁺ and varying the content of the other ligand enables the formation of ZIF derivatives with continuously tunable chemical compositions and ellipsoidal cage sizes. This tunability is likely due to the increased concentration of the fixed ligand, which enhances its competitive coordination ability within the ZIF framework. Consequently, ZIF-300 and ZIF-301 derivatives with adjustable long-axis cage sizes ranging from 6.5 Å to 9.6 Å were successfully prepared. Notably, the small cage-sized ZIF-300-S1 (6.5 × 6.1 Å2) and ZIF-301-S1 (6.5 × 6.6 Å2) exhibited exceptional molecular length separation of acetone (6.4 × 5.8 Å2) and butanol (8.4 × 5.5 Å2). Liquid-phase adsorption and breakthrough experiments confirmed their separation performance, and GCMC simulations provided further insights into the separation mechanism.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
Chemistry-An Asian Journal
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2016
·Vol. 11
·期 14
·2041-2048
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IF 4.592
Yuehua Hu,Fan Lin,Tao Wu,Ying Wang,Xiao-Shun Zhou,Yong Shao
Graphical Stranded : Induction and selective recognition of DNA triplex assembly have been achieved by using fluorescently activated chelerythrine as a multifuncational probe (see scheme). DNA triplex assembly has attracted a variety of interest in the regulation of genetic expression, drug screening, molecular switches, and sensors. However, these achievements are essentially dependent on the formation and stability of the triplex assembly. Herein, the recognition of DNA triplex assembly with various isoquinoline alkaloids was investigated. We found that natural chelerythrine (CHE) exhibits the highest selectivity in recognizing the triplex structure. The DNA triplex stability is substantially increased upon CHE binding, as opposed to the invariance in the stability of the duplex counterpart. CHE also favors the assembly of the triplex-forming oligonucleotide (TFO) with its duplex counterpart. The triplex binding switches CHE to a strong fluorescent emitter, which suggests CHE as a useful probe in following triplex assembly. As a unique triplex selector, inducer, and emitter, CHE successfully reports the wide pH- and metal-ion-dependent tunability of the triplex nanoswitch in a label-free manner.
研究领域:
化学
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生物化学
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分子生物学
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遗传学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2023
·
IF 9.5
Minzhong Li,Yahong Jin,Lifang Yuan,Bo Wang,Haoyi Wu,Yihua Hu,Feng Wang
The advent of near-infrared (NIR) afterglow in Cr3+-doped materials has stimulated considerable interest in technological applications owing to the sustainable emission of light with good penetrability. However, the development of Cr3+-free NIR afterglow phosphors with high efficiency, low cost, and precise spectral tunability is still an open question. Herein, we report a novel Fe3+-activated NIR long afterglow phosphor composed of Mg2SnO4 (MSO), in which Fe3+ ions occupy the tetrahedral [Mg–O4] and octahedral [Sn/Mg–O6] sites, giving rise to a broadband NIR emission spanning 720–789 nm. On account of energy-level alignment, the electrons released from the traps show a preferential return to the excited energy level of Fe3+ in tetrahedral sites through tunneling, leading to a single-peak NIR afterglow centered at 789 nm with a full-width at half-maximum (fwhm) of 140 nm. The high-efficiency NIR afterglow, showing a record persistent time lasting over 31 h among Fe3+-based phosphors, is demonstrated as a self-sustainable light source for night vision applications. This work not only provides a novel Fe3+-doped high-efficiency NIR afterglow phosphor for technological applications but also establishes practical guidance for rational tuning of afterglow emissions.
研究领域:
材料科学
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光学工程
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DOI
PubMed
高影响因子
Matter
·
2024
·
IF 17.3
Xiaoyu Hou,Kaiyue Zhang,Xintao Lai,Liwei Hu,Florian Vogelbacher,Yanlin Song,Lei Jiang,Mingzhu Li
Passive daytime radiative cooling is regarded as a promising technology to achieve all-day subambient cooling without energy consumption and pollution. The installation of monotonous white radiative cooling coating on the facades of buildings poses challenges in terms of aesthetic integration. Fabricating radiative cooling coatings with different colors and high cooling efficiency at a low cost is an optimal solution for their broad adoption and commercialization. Here, inspired by the elytra of the scarab beetle, we design a hierarchically porous nested structured radiative cooling film with high subambient cooling efficiency and flexible color tunability. This film exhibits both high solar reflectance (93.4%) and superior thermal emissivity (92.3%), realizing subambient cooling of ∼10.2°C at night and ∼7.2°C at midday. Its color is brilliant, stable, and flexible. Additionally, this film is self-cleaning and can reduce noise, which suggests possibilities for the development of multifunctional radiative cooling surfaces in building envelopes, automobile coatings, and clothes.
研究领域:
材料科学
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建筑技术
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热能工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yang Xiang,Boying Zhang,Changgeng Zhang,He Zhu,Qi Zhang,Shiping Zhu
Adhesives are essential for binding materials and ensuring the integrity of structural systems. However, adhesive joints often experience force accumulation, leading to potential failure, which remains challenging to monitor in real-time. In this study, we introduce a simple, cost-effective, and versatile strategy for fabricating force-indicating smart adhesives (FISAs) using commercially available materials, including polyacrylate matrices and silicone microspheres as fillers. These adhesives exhibit a pronounced mechanochromic response, driven by reversible cavitation within the elastomer matrix, enabling both qualitative and quantitative visualization of stress distribution at adhesive joints. This capability allows for early detection of adhesive failure, offering a proactive warning mechanism. The adhesive properties, including force sensitivity, are highly tunable by adjusting the polyacrylate matrix composition, microsphere content, size, and interfacial strength, making these FISAs adaptable to a wide range of substrates. This work represents a significant advancement in smart adhesive technology, combining enhanced monitoring capabilities with broad applicability across diverse scenarios.
研究领域:
材料科学
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力学
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化学工程
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产品关联
DOI
高影响因子
Soft Matter
·
2020
·Vol. 16
·期 26
·6082-6090
·
IF 3.14
Pengzhao Xu,Shifang Duan,Zuyao Xiao,Zhou Yang,Wei Wang
The emerging field of active matter, and its subset active colloid, is in great need of good model systems consisting of moving entities that are uniform and highly tunable. In this article, we address this challenge by introducing core–shell SiO2–TiO2 microspheres, prepared by chemically coating a thin layer of TiO2 on an inert core, that are highly monodisperse in size (polydispersity 4.1%) and regular in shape (circularity 0.93). Compared with similar samples prepared by the classic sol–gel method, Janus TiO2–Pt active colloids prepared with core–shell TiO2 spheres move faster and boast a much clearer Janus interface. Moreover, a unique feature of these core–shell TiO2 microspheres is their great tunability in the colloid size, shell thickness, and even the type of the core particle. These advantages are highlighted in two examples, one demonstrating a TiO2–Pt active colloid with a magnetic core that enables magnetic manipulation, and the other demonstrating the collective expansion and contraction of a uniform cluster of core–shell TiO2 colloids under UV light illumination. We believe that TiO2 microspheres produced by this core–shell technique compare favorably with many other types of active colloids being employed as model systems, and thus open up many research possibilities.
研究领域:
材料科学
·
物理化学
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产品关联
DOI
PubMed
高影响因子
Environmental Science-Nano
·
2019
·Vol. 6
·期 3
·904-915
·
IF 7.704
Abdul Ghaffar,Lina Zhang,Xiaoying Zhu,Baoliang Chen
Graphene oxide (GO) membranes (GOMs) are robust and demonstrate excellent rejection of ions and are promising for use in water treatment. However, maintaining the stability of GOMs during processing and scale-up is difficult in practice and is somewhat counterintuitive. Herein, we report the synthesis of GOM by the blade casting technique, followed by cation (K+, Na+, Li+, Mg2+, Ca2+, and Ba2+) intercalation, leading to membranes that possess different thicknesses and interlayer spacings. The thickness and interlayer spacing as controlled by different cations were crosschecked after immersion in water and the changes were examined by SEM and XRD. The thickness and interlayer spacing was ultimately dependent on the hydrated radius of the cations and only K+, Mg2+, Ca2+, and Ba2+ were able to effectively stabilize GOM. Moreover, GOM with Ca2+ (GOM-Ca2+), and after reduction (GOM-Ca2+-R), was further examined in water, acidic and alkaline solutions to check the stability. The water flux of GOM-K+, GOM-Ba2+, GOM-Ca2+ and GOM-Mg2+ was decreased relative to membrane thickness, whereas the rejection % of different ions (Na+, Cu2+, Ni2+, Pb2+ and Mg2+) was based on the interlayer spacing. Based on these findings, we demonstrate a simple and scalable method to obtain graphene-based membranes with good stability, adjustable thickness and tunable interlayer spacing, thereby eliminating the problems caused by aggregation and functional moieties.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
RSC Advances
·
2019
·Vol. 10
·期 1
·244-252
·
IF 3.049
Xiao-Wei Chen,Shang-De Sun,Guo-Long Yang,Chuan-Guo Ma
Phytosterol-based oleogels have been engineered in edible oils for potential applications as sustainable replacements for petrolatum. Oleogels have emerged with a crystal network structure with oil molecules trapped inside. In addition, the viscosity of highly thixotropic oleogels could be tuned by manipulating the concentration of phytosterols and monoglycerides, and the type of surface-active small molecules and bulk vegetable oils. Furthermore, viscous soft matter could also be tunably made with 8–20% oleogelators in olive oil with favourable water vapour occlusive and wettability properties, in addition to having good texture, and outstanding thixotropic and thermal reversibility properties. These properties are quite similar to those of commercial petrolatum. This work demonstrates that the natural phytosterol-oleogels in edible oils can be a novel source of sustainable and green replacements for petrolatum.
研究领域:
材料科学
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生物学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Applied Materials Today
·
2020
·
IF 8.352
Chen Zhang,Chenxi Liu,Wenxin He,Dian Jiao,Zhe Liu
The ever-growing development of advanced biomaterials has substantially influenced the diagnosis and treatment against various diseases. In this study, a novel type of bio-inspired cross-linked polymer has been constructed with prominent size-tunability from micro- to nano-dimension and versatile enhanced drug loading mechanisms. In the meanwhile, this functional polymer has been applied to sustained and ultrasound (US)-triggered/promoted stimuli-responsive drug release upon an external US irradiation. Proof-of-principle in vivo animal studies proved their utility as a useful tool for a precision assessment of drug deposition and targeting delivery as well as a state-of-the-art visualized therapeutic strategy by this means. These valuable merits validated the as-reported functional polymer a useful tool for the precision assessment of drug deposition and targeted delivery, and also opened up an era to the state-of-the-art visualized therapeutic translations.
研究领域:
生物材料学
·
药物递送系统
·
医学影像
·
精准医疗
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）