Materials Chemistry Frontiers
·
2017
·Vol. 2
·期 2
·362-368
·
IF 0
Chong Hu,Tao Ye,Yujing Liu,Jie Ren,Xinyi Jin,Hongzheng Chen,Hanying Li
Incorporation of guest materials into semiconducting single crystalline hosts leads to the formation of semiconducting single-crystal composites. However, limited efforts have been made to comprehensively investigate the property of these potential functionalized single-crystal composites. Herein, PbI2/gel single-crystal composites have been successfully prepared. Diffuse reflectance spectra show a clear increase in the band gap of PbI2 after gel incorporation. The band gap is further increased through expanding the area of host/guest interfaces or enhancing the interatomic forces at the interfaces. The interatomic forces (electrostatic interaction) at the host/guest interfaces are attributed to this band gap shift. As such, this study provides a novel and facile way for band gap engineering by gel incorporation.
研究领域:
材料科学
·
半导体物理
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DOI
Advanced Science
·
2022
·Vol. 9
·期 14
·2105787
·
IF 17.521
Jindong Chen,Qingchen Wu,Haotian Tian,Xiaotian Jiang,Feng Xu,Xin Zhao,Zheshuai Lin,Min Luo,Ning Ye
Pnictides are superior infrared (IR) nonlinear optical (NLO) material candidates, but the exploration of NLO pnictides is still tardy due to lack of rational material design strategies. An in-depth understanding structure–performance relationship is urgent for designing novel and eminent pnictide NLO materials. Herein, this work unravels a vital band gap mechanism of pnictides, namely P atom with low coordination numbers (2 CN) will cause the decrease of band gap due to the delocalization of non-bonding electron pairs. Accordingly, a general design paradigm for NLO pnictides, ionicity–covalency–metallicity regulation is proposed for designing wide-band gap NLO pnictides with maintained SHG effect. Driven by this idea, millimeter-level crystals of MgSiP2 are synthesized with a wide band gap (2.34 eV), a strong NLO performance (3.5 x AgGaS 2 ), and a wide IR transparency range (0.53–10.3 µm). This work provides an essential guidance for the future design and synthesis of NLO pnictides, and also opens a new perspective at Zintl chemistry important for other material fields.
研究领域:
材料科学
·
非线性光学
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固态化学
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津特尔化学
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红外材料
✓ 已验证
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 26
·14434-14444
·
IF 2.936
Yuqing Gu,Yuqing Zhang,Yi Li,Xiulong Jin,Chengjun Huang,Stefan A. Maier,Jian Ye
Surface-enhanced Raman scattering (SERS) nanoprobes show promising potential for biosensing and bioimaging applications due to advantageous features of ultrahigh sensitivity and specificity. However, very limited research has been reported on the SERS photostability of nanoprobes upon continuous laser irradiation, which is critical for high-speed and time-lapse microscopy. The core–shell off-resonant gap-enhanced Raman tags (GERTs) with built-in Raman reporters, excited at near-infrared (NIR) region but with a plasmon resonance at visible region, allow decoupling the plasmon resonance behaviors with the SERS performance and therefore show ultrahigh Raman photostability during continuous laser irradiation. In this work, we have synthesized five types of off-resonant GERTs with different embedded Raman reporters, numbers of shell layer, or nanoparticle shapes. Via thorough examination of time-resolved SERS trajectories and quantitative analysis of photobleaching behaviors, we have demonstrated that double metallic-shell GERTs embedded with 1,4-benzenedithiol molecules show the best photostability performance, to the best of our knowledge, among all SERS nanoprobes reported before, with a photobleaching time constant up to 4.8 × 105 under a laser power density of 4.7 × 105 W cm−2. Numerical calculations additionally support that the local plasmonic heating effect in fact can be greatly minimized using the off-resonance strategy. Moreover, double-shell BDT-GERTs are highly potential for high-speed and high-resolution Raman-based cell bioimaging.
研究领域:
生物传感
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生物成像
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纳米技术
✓ 已验证
DOI
PubMed
高影响因子
THERMOCHIMICA ACTA
·
2026
·
IF 3.6
Xu Wen,Jianhua Wang,Nan Zhang,Yucun Liu,Pan Gao
Boron(B) exhibits tremendous potential as a solid fuel owing to its considerably higher energy density than those of conventional molecular explosives. However, its oxidation products exhibit low melting points and self-healing properties, which severely inhibit the associated energy release. To enhance boron energy release, 50-nm energetic B/ glycidyl azide polymer (GAP)/perfluoroalkoxy polymer (PFA) microspheres were prepared using GAP as a binder via an emulsion self-assembly method. Further, the combustion performances of 5-μm and 50-nm B/GAP/PFA fuels prepared via solvent evaporation were systematically investigated, and the combustion properties of the three boron-based fuels were compared. Results demonstrate that the prepared energetic microspheres can prevent the adverse effects of boron combustion that lead to the agglomeration of surrounding materials, thereby facilitating oxygen diffusion into the system. Furthermore, spherical boron particles exhibited sustained and stable combustion characteristics while achieving enhanced energy release.
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2020
·Vol. 11
·期 1
·1-13
·
IF 12.121
Gu Yuqing,He Chang,Zhang Yuqing,Lin Li,Thackray Benjamin David,Ye Jian
Anticounterfeiting labels based on physical unclonable functions (PUFs), as one of the powerful tools against counterfeiting, are easy to generate but difficult to duplicate due to inherent randomness. Gap-enhanced Raman tags (GERTs) with embedded Raman reporters show strong intensity enhancement and ultra-high photostability suitable for fast and repeated readout of PUF labels. Herein, we demonstrate a PUF label fabricated by drop-casting aqueous GERTs, high-speed read using a confocal Raman system, digitized through coarse-grained coding methods, and authenticated via pixel-by-pixel comparison. A three-dimensional encoding capacity of over 3 × 10 15051 can be achieved for the labels composed of ten types of GERTs with a mapping resolution of 2500 pixels and quaternary encoding of Raman intensity levels at each pixel. Authentication experiments have ensured the robustness and security of the PUF system, and the practical viability is demonstrated. Such PUF labels could provide a potential platform to realize unbreakable anticounterfeiting.
研究领域:
材料科学
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光学
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安全技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Communications Physics
·
2019
·Vol. 2
·期 1
·1-7
·
IF 0
Bu Kunliang,Zhang Wenhao,Fei Ying,Wu Zongxiu,Zheng Yuan,Gao Jingjing,Luo Xuan,Sun Yu-Ping,Yin Yi
Tuning the electronic properties of a matter is of fundamental interest in scientific research as well as in applications. Recently, the Mott insulator-metal transition has been reported in a pristine layered transition metal dichalcogenide 1 T -TaS \({}_{2}\) , with the transition triggered by an optical excitation, a gate controlled intercalation, or a voltage pulse. However, the sudden insulator-metal transition hinders an exploration of how the transition evolves. Here, we report the strain as a possible new tuning parameter to induce Mott gap collapse in 1 T -TaS \({}_{2}\) . In a strain-rich area, we find a mosaic state with distinct electronic density of states within different domains. In a corrugated surface, we further observe and analyze a smooth evolution from a Mott gap state to a metallic state. Our results shed new lights on the understanding of the insulator-metal transition and promote a controllable strain engineering on the design of switching devices in the future.
研究领域:
凝聚态物理
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材料科学
✓ 已验证
DOI
Scientific Reports
·
2014
·Vol. 4
·期 1
·7087
·
IF 5.078
Wang Hui,Liu Ting,Huang Yingzhou,Fang Yurui,Liu Ruchuan,Wang Shuxia,Wen Weijia,Sun Mengtao
Plasmon-driven surface catalytic (PDSC) reaction in Ag/Au nanoparticle monomer or dimer-film gaps are experimentally and theoretically investigated, using surface enhanced Raman scattering (SERS) and finite element method. The variation of SERS spectra in different nano gaps of nanoparticle-film systems indicated the PDSC reaction was largely depended on the number of nanoparticles. The higher Raman intensity of p,p′ -dimercaptoazobenzene (DMAB) in dimer-film nanogap was because effective coupling of induced image charge on metal film in hybridized plasmonic gap mode, which was confirmed by the electric field distribution. Furthermore, the influence of material and wavelength was also studied to obtain the optimal experimental condition for best surface catalysis in hybridized plasmonic gap mode. Our studies in this common configuration of plasmonic nanostructure are of great significance not only in the field of catalysis on metal surface but also in other surface plasmon fields such as senor, photon detection, water splitting, etc.
研究领域:
等离激元学
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纳米催化
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表面科学
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光学光谱学
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纳米光子学
·
材料化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry B
·
2020
·Vol. 8
·期 31
·6944-6955
·
IF 5.344
Yuqing Gu,Xinyuan Bi,Jian Ye
Surface-enhanced Raman scattering (SERS) nanotags are widely used in the biomedical field including live-cell imaging due to the high specificity from their fingerprint spectrum and the multiplexing capability from the ultra-narrow linewidth. However, long-term live-cell Raman imaging is limited due to the photodamage from a relatively long exposure time and a high laser power, which are needed for acquiring detectable Raman signals. In this work, we attempt to resolve this issue by developing ultrabright gap-enhanced resonance Raman tags (GERRTs), consisting of a petal-like gold core and a silver shell with the near-infrared resonant reporter of IR-780 embedded in between, for long-term and high-speed live-cell imaging. GERRTs exhibit an ultrahigh Raman intensity down to a single-nanoparticle level in aqueous solution and the solid state upon 785 nm excitation, allowing for high-resolution time-lapse live-cell Raman imaging with an exposure time of 1 ms per pixel and a laser power of 50 μW. Under these measurement conditions, we can possibly capture dynamic cellular processes with a high temporal resolution, and track living cells for long periods of time owing to the reduced photodamage to cells. These nanotags open new opportunities for ultrasensitive, low-phototoxic, and long-term live-cell imaging.
研究领域:
生物医学
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光学成像
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Zhixiang Ye,Li Lin,Ziyang Tan,Yu-Jia Zeng,Shuangchen Ruan,Jian Ye
Gap-enhanced Raman tags (GERTs) with built-in Raman molecules show excellent surface-enhanced Raman scattering (SERS) performance and great potential for biomedical applications. In this work, we add a silver (Ag) shell to gold (Au) single-shell GERTs (Au@BDT@Au) to form Au-Ag hybrid multi-shell nanoparticles . It is found that this modification enhances the SERS performance of the NPs and that the thickness of the Ag shell is a key factor in determining the enhancement. Double-shell bimetallic GERTs with a Au core, Au shell and exterior 2 nm-thickness silver shell (Au@BDT@Au@BDT@Ag) show the best SERS performance and good photostability. Moreover, we utilize the double-shell bimetallic GERTs to develop a new kind of SERS-based lateral flow immunoassay (LFIA), acheiving limit of detection as low as 0.7 mIU/mL (0.077 ng/mL). We demonstrated a simple way to fabricate sub-100 nm multi-shell bimetallic GERTs for use as SERS probes with strong Raman signals with potential for in vivo and in vitro application as bioimaging and biosensing probes.
研究领域:
生物医学工程
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纳米技术
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 43
·2306042
·
IF 19
Haoran Huang,Heyang Chen,Zhiqiang Gao,Yupeng Ma,Kunpeng Zhao,Tian-Ran Wei,Xun Shi
In general, inorganic non-metallic materials exhibit brittleness, and achieving plasticity in wide-gap semiconductors or dielectrics poses an even greater challenge. Historically, silver halides have been suggested to be ductile; however, their deformability under different load modes has not been well demonstrated, and the underlying mechanisms are not fully understood. In this study, the authors demonstrate the excellent plasticity of AgCl and AgBr polycrystals at room temperature under tension, bending, compression, and roller pressing. In particular, the rolling reduction rate of AgCl/AgBr exceeds 97%, corresponding to the plastic extensibility from 3600% to 4200%. The metal-like plasticity and multiple slip systems are attributed to the ionic features, specifically the Coulombic nature of the Ag-Cl/Br interactions, and the appreciable polarization of the anions. Such less localized diffuse bonding can be readily switched upon atomic gliding, thus ensuring slip without cleavage. This study contributes to the advancement of the understanding and development of wide-gap plastically deformable inorganic materials for applications in flexible, shape-conformable high-power electronics and dielectrics.
研究领域:
材料科学
·
固体力学
✓ 已验证
产品关联
DOI
高影响因子
Science Advances
·
2025
·Vol. 11
·期 19
·
IF 12.5
Li Zhang,Tianxiang Yang,Zhenyi Zhao,Zhi Wang,Shihong Lin,Song Zhao
Pressure-driven distillation (PD), as an emerging technology, holds tremendous potential for producing freshwater from nontraditional water sources. In this process, a sufficient hydraulic pressure is applied to drive water evaporation and vapor transport across a vapor-gap membrane. The development of the PD process critically depends on the availability of robust and large-area superhydrophobic membranes. Here, we propose an ultraselective superhydrophobic thin-film composite (TFC) vapor-gap membrane with confined transport channels toward the PD process, which can be manufactured scale-up through a facile swelling–assisted deposition strategy. The TFC-PD membrane demonstrates separation capabilities, achieving near-complete rejections of nonvolatile solutes, including salts, boron, and urea. Featured by a vapor-gap superhydrophobic layer, the TFC-PD membrane exhibits superior chlorine and scaling resistance and maintains stable performance over time without being oxidized or scaling. This work offers notable advancements in the microstructural design of PD membranes and the development of scalable robust TFC membranes for the PD process.
研究领域:
环境科学
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材料科学
·
水资源工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Chunlei Zhao,Yilin Zhang,Jianming Tao,Zhicong Liu,Liang Zhao,Fiaz Hussain,Jiuwei Lei,Pengcheng Yu,Hailun Jin,Wen Tang,Haochang Zhang,Pushun Lu,Shuaika Liang,Caijin Xiao,Shuo Wang,Yusheng Zhao,Wei Xia
Lithium-metal-chloride (Li-M-Cl) ionic conductors, with the high Li + conductivity, excellent cathode compatibility, and favorable mechanical properties, have emerged as a promising solid electrolyte (SE) candidate for all-solid-state batteries (ASSBs). However, their poor compatibility with lithium anodes, due to the presence of high-valence M species that are highly susceptible to reduction reaction, remains a major challenge. In this study, a strategic modification of the central metal's electronic structure is presented to enable controlled modulation of the orbital gap, thereby tuning its resistance to reduction. By incorporating lanthanide elements (Ho and Lu) at the M sites, which can effectively increase the orbital gap of the metal-centered polyhedra, improving the reduction stability of the solid electrolytes. As proof of concept, a series of new Li-M-Cl halide superionic conductors is synthesized that exhibit excellent compatibility with Li anodes. ASSBs utilizing these newly developed SEs as a single electrolyte layer achieve outstanding cycling stability, retaining up to 80.1% of their capacity after 500 cycles at 1 C. This study offers an effective strategy to address the challenge of anode incompatibility in halide SEs, advancing the development of high-energy-density ASSBs.
研究领域:
材料科学
·
电化学
·
固态离子学
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能源存储
·
无机化学
·
电池技术
✓ 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）