JOURNAL OF SOLID STATE CHEMISTRY
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2022
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IF 3.656
Lei Huai,Lu-Nan Zhang,Bei-Bei Zhang,Guangan Jia,Wen-Dong Yao,Wenlong Liu,Ru-Ling Tang
Inorganic oxide crystalline materials have been attractive owing to unusual structural and physical properties including superconductivity , nonlinear optics, photocatalytic degradation, molecular sieve and solar cells. Herein, a new molecule-inclusion strontium gallate , Sr 6 (Ga 12 O 24 )·Bi 2 O 3 , has been obtained by solid-state method. The compound crystallizes in the centrosymmetric space group R 3 ¯ (no. 148), and exhibits a three-dimensional network structure composed by corner-sharing connected GaO 4 tetrahedra and edge-sharing connected SrO 9 polyhedra with Bi atoms located in hexagonal tunnels. Spectral analysis shows that the compound exhibits strong Raman peak. Synthesis, crystal structure, versatile characterizations as well as theory calculations of Sr 6 (Ga 12 O 24 )·Bi 2 O 3 are presented in this work.
研究领域:
无机化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2025
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IF 4.6
Xucai Zhao,Qingqing Yu,Lili Zhang,Rongfei Wei,Hai Guo
As emerging anti-counterfeiting materials, persistent luminescence (PersL) materials have attracted much attention owing to their particular luminescent properties, including durable luminescence, facile identification, high security and environment-friendly. Especially, exploiting color-tunable dynamic afterglow materials that facilitate the use of advanced technology such as multi-mode dynamic anti-counterfeiting remains of great realistic significance. Herein, a series of Ba 0.95 Sr 0.05 Ga 2- y Gd y O 4 :Bi 3+ phosphors with tunable photoluminescence and PersL were synthesized by the cationic substitution strategy. The displacement of Ga 3+ by Gd 3+ induces an additional blue emission owing to the generation of a new Bi 3+ luminescence center. The pure white light is realized in Ba 0.942 Sr 0.05 Ga 1.9 Gd 0.1 O 4 :0.8 %Bi 3+ ,0.25 %K + when excited by 325 nm light. Besides, color-tunable emission is triggered by changing the excitation wavelength or temperature. Significantly, excellent room-temperature PersL and dramatically intensified PersL with tunable color output under thermal stimulation are clearly discernible. Such properties result from the existence of multiple Bi 3+ luminescent centers and traps. These findings open up new ideas to produce color-tunable dynamic PersL materials for advanced anti-counterfeiting, information storage and encryption.
研究领域:
材料科学
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光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
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2019
·Vol. 8
·期 5
·1598-1607
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IF 6.641
Peipei Dang,Dongjie Liu,Xiaohan Yun,Guogang Li,Dayu Huang,Hongzhou Lian,Mengmeng Shang,Jun Lin
Herein, we report a new series of Ba1+xSr1−xGa4O8:Bi3+ (x = 0–0.7) phosphors that exhibit extremely broadband emission, covering almost the entire visible region and extending to the deep-red region, when excited by ultraviolet light. BaSrGa4O8:Bi3+ exhibits two emission bands located at 470 and 570 nm originating from different emission centers. With the gradual substitution of Ba for Sr, both of the emission bands show a red-shift, from 470 to 510 nm and from 570 to 630 nm, respectively. The corresponding full width at half maximum (FWHM) increases from 192 to 283 nm, which is attributed to a superposition of multiple emission centers via crystal field regulation. As a result, the emission can be tuned from cyan to orange across the warm white light region in Ba1+xSr1−xGa4O8:Bi3+ (x = 0–0.7) systems. Simultaneously, this series of phosphors presents good thermal stability (97% intensity at 150 °C for the Ba1.5Sr0.5Ga4O8:Bi3+ sample) and the thermal quenching will decrease with the formation of a solid solution due to the increasing rigidity of the lattice structure. Interestingly, the two emission bands in the representative Ba1+xSr1−xGa4O8:Bi3+ (x = 0–0.7) sample exhibit different thermal responses to increasing temperature, thus an optical thermometer with color discrimination and good sensitivity is designed. The maximum relative sensitivity (Sr) is 1.295% K−1 in the temperature range of 7–400 K. The corresponding emission color can be tuned from blue-cyan to orange, including white light. This work presents a rational design strategy for controllable ultra-broadband emission tuning across the white light region and to further explore potential optical sensor applications.
研究领域:
材料科学
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光学
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传感器技术
✓ 已验证
产品关联
DOI
高影响因子
Regenerative Biomaterials
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2024
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IF 5.6
Ji Minrui,Yuan Zaixin,Ma Hongdong,Feng Xian,Ye Cong,Shi Lei,Chen Xiaodong,Han Fei,Zhao Caichou
The management of full-thickness skin injuries continues to pose significant challenges. Currently, there is a dearth of comprehensive dressings capable of integrating all stages of wound healing to spatiotemporally regulate biological processes following full-thickness skin injuries. In this study, we report the synthesis of a dandelion-shaped mesoporous strontium-gallium microparticle (GE@SrTPP) achieved through dopamine-mediated strontium ion biomineralization and self-assembly, followed by functionalization with gallium metal polyphenol networks (MPNs). As CroCfunctional wound dressing, GE@SrTPP can release bioactive ions in a spatiotemporal manner akin to dandelion seeds. During the early stages of wound healing, GE@SrTPP demonstrates rapid and effective hemostatic performance while also exhibiting antibacterial properties. In the inflammatory phase, GE@SrTPP promotes M2 polarization of macrophages, suppresses the expression of pro-inflammatory factors, and decreases oxidative stress in wounds. Subsequently, during the stages of proliferation and tissue remodeling, GE@SrTPP facilitates angiogenesis through the activation of the HIF-1α/VEGF pathway. Analogous to the dispersion and rooting of dandelion seeds, the root-like new blood vessels supply essential nutrients for wound healing. Ultimately, in a rat chronic wound model, GE@SrTPP achieved successful full-thickness wounds repair. In summary, these dandelion-shaped GE@SrTPP microparticles demonstrate comprehensive regulatory effects in managing full-thickness wounds, making them highly promising materials for clinical applications.
研究领域:
材料科学
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生物医学工程
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伤口愈合
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生物材料
✓ 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）