NEW JOURNAL OF CHEMISTRY
·
2024
·
IF 2.7
Jiahuan Liu,Xiaowan Li,Shangyu Xie,Ruirui Ma,Hongfei Wang,Shu-Rong Ban,Chengwu Zhang,Lixia Guo
Titanium has been widely used as a bone implant material due to its high mechanical strength and good biocompatibility. However, implant-related infections and insufficient osteogenic activity can lead to implant failure or delay patient recovery. With that in mind, we fabricated one multifunctional implant coating material, PDA-NOate@CuS. In the as developed material, CuS, deposited in the outermost layer, not only significantly improved the photothermal properties of polydopamine (PDA), but also released Cu ion to effectively prevent bacterial adhesion. The NO-donor (NOate) with near-infrared irradiation, generated NO which strenthened antibacterial effect of materials. The in vitro antibacterial experiments proved that PDA-NOate@CuS displayed excellent S.aureus and E. coli inhibitory effect. MC3T3-E1 cells experiments results showed that PDA-NOate@CuS promoted cell adhesion, growth and mineralization. Moreover, in vivo study demonstrated that titanium implant coated with Ti@PDA-NOate/CuS markedly enhanced osseointegration, inhibited infection, with good biocompatibility. Present study paves ways for developing novel materials for implant modification, which would benefit the treatment of orthopedic disease.
研究领域:
生物材料
·
骨科
·
生物医学工程
·
材料科学
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DOI
高影响因子
Materials Express
·
2024
·Vol. 14
·期 8
·1113-1125
·
IF 0.7
Yang Guang-Hui,Yi Shao-Zhen,Du Shu-Rong,Gao Jia-Lin,Wan Xue-Juan
Combining PNIPAM with a biocompatible NIR-II photothermal agent to prepare near-infrared-responsive hydrogels holds significant importance in the field of biomedical applications. In this study, PNIPAM/Bacterial cellulose (BC)/MXene composite hydrogels were prepared by in-situ
polymerization, where Nb2C MXene serving as a near-infrared photothermal agent and BC acting as enhancing filler. The composite hydrogels possess a semi-interpenetrating network structure, where PNIPAM serves as the crosslinking network backbone, and BC act as a semi-interpenetrating
network, which significantly enhances the mechanical strength of the composite hydrogels. The tensile strength and compressive strength reach 35 KPa and 500 KPa, respectively, which is an order of magnitude higher than that of pure PNIPAM hydrogel. The introduction of BC and MXene did not
significantly affect the thermo-sensitivity of the composite hydrogel which can rapidly undergo a phase transition and release internal moisture above LCST. Morover, the composite hydrogel exhibits excellent photothermal performance, with its temperature rapidly increasing to around 70 °C
under the irradiation of 1064 nm laser. The degree of temperature fluctuations can be accurately regulated by modifying the laser intensity and exposure time. Additionally, it demonstrates good photothermal cycling stability and significant potential for photothermal therapy.
研究领域:
生物材料学
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纳米医学
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组织工程
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光热治疗
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高分子科学
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DOI
高影响因子
Laser & Photonics Reviews
·
2023
·Vol. 18
·期 1
·2300732
·
IF 11
Zhuowei Li,Ge Zhu,Shanshan Li,Wen Xu,Qingfeng Bian,Yan Cong,Ming He,Xixian Luo,Shuangyu Xin,Bin Dong
The burgeoning phosphor-converted near-infrared light-emitting diodes (pc-NIR LEDs) have important applications in special illumination and spectroscopy analysis. However, the development of efficient NIR-emitting phosphors with high performance is still a challenge. In this work, a chemical unit co-substitution strategy is proposed to realize the excitation transition regulation and successfully achieve high-performance NIR luminescence in Ca 3- y Na y Mg 1- y Sb 2- x Al 2+ y O 12 : x Cr 3+ (0 ≤ x ≤ 0.05, 0 ≤ y ≤ 1) garnet-type solid solution phosphors. Through the excitation transition modulation from the 4 A 2 ground state to the 4 T 1 ( 4 P) and 4 T 1 ( 4 F) excitation state, the excitation intensity at the blue light region is largely enhanced by 25.6 times. Moreover, the NIR-emitting efficiency and thermal stability are improved, with the optimal luminescence internal quantum efficiency of 90.6% and thermal stability of 97%@423 K, without any flux-assisted sintering or reduction atmosphere protection. The structure regulation induced small Stokes shift, weak electron-phonon coupling effect, and decreased non-radiative transition are responsible for the excellent NIR-emitting performance. Finally, the NIR pc-LED is fabricated with photoelectric efficiencies of 18.7%@100 mA and NIR output powers of 63 mW@100 mA, presenting potential applications in nondestructive internal defect detection, veins imaging, and night vision surveillance.
研究领域:
材料科学
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光学工程
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固体化学
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发光材料
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半导体器件
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DOI
高影响因子
Laser & Photonics Reviews
·
2023
·Vol. 18
·期 1
·2300717
·
IF 11
Yuzhen Wang,Gaochao Liu,Zhiguo Xia
Near-infrared (NIR) II region (1000–1700 nm) lighting sources possess special potential for temperature sensing and quantitative composition analysis. However, it is a challenge to tune the luminescence toward such long wavelength NIR-II emission. Herein, Cr 4+ ions occupation is designed and verified in olivine-type CaYGaO 4 as [CrO 4 ] tetrahedron by site occupancy confinement. Under 620 nm red light excitation, the phosphors display broadband NIR-II emission centered at 1330 nm with a full width at half maximum (FWHM) of 233 nm, resulting from spin-allowed 3 T 2 to 3 A 2 transition of Cr 4+ ions in T d symmetry. The optical thermometry application is demonstrated by decoding the spectral shift and decay times varying with temperature, and the maximum relative sensitivities are 5.82% and 0.78% K −1 , respectively. Furthermore, a flexible film containing CaYGaO 4 :Cr 4+ is fabricated to implement the non-invasive detections of fillet temperature and NH 3 concentration in ammonia. This work represents a step toward developing next-generation NIR-II luminescence materials and widens non-invasive detection applications.
研究领域:
材料科学
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光学工程
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生物医学工程
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无创检测技术
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分子成像
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DOI
高影响因子
Journal of Materials Chemistry C
·
2015
·Vol. 3
·期 17
·4445-4451
·
IF 4.696
Jin Wang,Haoran Zhang,Bingfu Lei,Zhiguo Xia,Hanwu Dong,Yingliang Liu,Mingtao Zheng,Yong Xiao
Red-emitting CaAlSiN3:Eu2+ phosphors with different doping contents have been synthesized by solid-state reaction using calcium hydride as a calcium source. The emergence of persistent luminescence in CaAlSiN3:Eu2+ was originated from electron traps introduced by the partial substitutions of O in N sites to form positive trap levels at low Eu2+ concentration. The broad thermoluminescence emission bands indicated multiple trap levels, in which the shallow traps were mainly responsible for the red persistent luminescence; besides, the deep trap electrons could be efficiently released under extra NIR (980 nm) stimulation, resulting in enhanced photoluminescence and phosphorescence. It is expected that the enhanced emission under UV-NIR simultaneous excitation may be a promising technique to investigate the trap distributions in optical energy storage materials.
研究领域:
材料科学
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发光材料
·
光学物理
·
固态化学
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DOI
高影响因子
Nanoscale
·
2024
·Vol. 16
·期 16
·8151-8161
·
IF 5.8
Ning Li,Linping Li,Yanping Qiu,Xuhui Liu,Jiatong Zhang,Yangqin Gao,Lei Ge
The rational design of the dimension and geometry of a plasmonic semiconductor cocatalyst is vitally important for efficient utilization of near-infrared (NIR) light and superior photocatalytic hydrogen generation. Herein, hollow cubic CuSe@CdS composites with different sizes and strong localized surface plasmon resonance (LSPR) were prepared by selenizing size-tunable Cu2O templates and loading CdS nanoparticles. The size of hollow cubic CuSe can affect the surface area and the conduction band potential through the size effect, regulating the carrier behavior of the CuSe@CdS heterojunction. The CuSe@CdS composites show enhanced and wide absorption in the full spectrum due to the LSPR effect of CuSe. Meanwhile, the composites show excellent photocatalytic hydrogen capacity in the full spectrum in a 0.35 M Na2S/0.25 M Na2SO3 sacrificial reagent solution. The best hydrogen production rate of CSCE2 is 1.518 mmol g−1 h−1 (5.54 times higher than that of CdS) under Vis light (780 > λ > 420 nm) irradiation and 0.28 mmol g−1 h−1 under NIR light (λ > 780 nm) illumination. Interestingly, the photocatalytic activity for H2 under Vis-NIR light (λ > 420 nm) is about 3 times (up to 4.45 mmol g−1 h−1) higher than that without NIR light assistance, due to the photothermal effect. Various analyses and DFT calculations demonstrate that the p–n heterojunction formed in the composites consists of p-type CuSe and n-type CdS, which achieves efficient carrier transfer and separation under the synergistic effect of the size effect and the photothermal effect. In addition, the expansion of the photocatalytic performance to the NIR range is mainly due to the “hot-electron” injection mechanism induced by the LSPR effect of CuSe. The reasonable design coupled with the plasmonic materials offers a new path to achieving the highly efficient conversion of solar energy to hydrogen energy.
研究领域:
材料科学
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光催化
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纳米技术
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可再生能源
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等离激元学
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DOI
高影响因子
Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 10
·3654-3661
·
IF 5.7
Yaowu Wang,Guocheng Pan,Jianfeng Wang,Yinyan Li,Zhenping Wu,Shiqing Xu,Gongxun Bai
Light-emitting diodes (LEDs) combined with near-infrared (NIR) phosphors are rapidly becoming important light sources for food safety, anti-counterfeiting and biological imaging due to non-destructive and non-toxic advantages. Single-phase materials with multi-mode luminescence under different stimuli are crucial for the development and applications of smart NIR phosphors. Here, we have developed multifunctional Cr3+ activated MgGa2O4 (MGO:Cr3+) phosphors with simultaneous photoluminescence and mechanoluminescence for NIR sensing. Under 470 nm excitation, the phosphors can produce emission bands from 650 to 850 nm. Meanwhile, the flexible devices based on phosphors can exhibit strong emissions in response to mechanical deformation, such as shock and friction. In addition, optical manometers based on luminescence from phosphors can achieve pressure sensing from 7 to 64 KPa. More intriguingly, we combined the MGO:Cr3+ phosphor with a blue LED chip to fabricate an NIR phosphor-converted LED for anti-counterfeiting and biological tissue penetration. Our results suggest that the multifunctional NIR phosphors with simultaneous photoluminescence and mechanoluminescence have potential applications in various sensing devices.
研究领域:
材料科学
·
光学传感
·
光子学
·
发光材料
·
智能传感器
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Ying Chen,Rongfei Wei,Lanjiao Li,Xiangling Tian,Fangfang Hu,Hai Guo
High-performance near-infrared (NIR) light sources are highly sought after in advanced spectroscopy techniques, driving the development of NIR phosphor-converted light-emitting diodes (pc-LEDs). Escalating the luminescence intensity and thermal stability of NIR-emitting phosphors, which is a core component of NIR pc-LEDs, is of paramount importance. Herein, chemical unit cosubstitution and cosolvent addition tactics were implemented to simultaneously boost the NIR luminescence performance of the synthesized phosphors. The replacement of [Sc3+-Sc3+] for [Ca2+-Zr4+] in Ca4ZrGe3O12:Cr3+ likely reduces the antisite defects and offers a more rigid crystal structure. As a result, the emitting intensity is reinforced significantly, along with a remarkable improvement in thermal stability, acquiring 65% of the initial luminescence at 423 K compared with 42% for the primal sample. Moreover, the introduction of H3BO3 further enhances NIR luminescence while maintaining a favorable thermal resistance. The encapsulated NIR pc-LED carries an impressive output power of 71.8 mW at 300 mA and a conversion efficiency up to 15.6% at 10 mA. The practical presentations in food checking, imaging, and detection manifest that Ca3.5ScZr0.5Ge3O12:Cr3+,H3BO3 is a promising material for spectroscopy-based technologies.
研究领域:
材料科学
·
光学
·
无机化学
✓ 已验证
DOI
高影响因子
DYES AND PIGMENTS
·
2018
·
IF 3.767
Weifen Niu,Zhiwen Wei,Juan Jia,Shaomin Shuang,Chuan Dong,Keming Yun
A novel ratiometric emission NIR-fluorescence probe N , N -dimethyl-4-((1E, 3E)-4-(3,3-dimethyl-3H-indol-2-yl)buta-1,3-dienyl)benzenamine, namely, DIDBA, is facilely synthesized on the basis of ethylene bridging of indole derivatives and 4-(dimethylamino) cinnamaldehyde. The probe exhibits a remarkable NIR ratiometric fluorescence emission ( F 618nm / F 697nm ) characteristic with p K a 4.5, and the linear response over the pH range of 3.5–5.2. DIDBA also displays favorable features include large Stokes shift of 200 nm under acidic conditions, high sensitivity, good selectivity, fine photostability and reversibility . The probe has low cytotoxicity and excellent cell membrane permeability, and is applied successfully to visualize intracellular pH fluctuations in live cells without influence of autofluorescence and native cellular species in biological systems.
研究领域:
生物化学
·
细胞生物学
·
医学影像学
✓ 已验证
DOI
高影响因子
CHEMPHYSCHEM
·
2020
·Vol. 21
·期 5
·397-405
·
IF 3.144
Feiyu Zhao,Xue Luo,Lixiang Liu,Jianhang Lv,Xianping Fan,Xvsheng Qiao,Yang Xu,Lorenz Kienle,Xianghua Zhang,Guodong Qian
Graphical Improved responsivity : GeSe micro-sheets and micro-belts were synthesized by a chemical orientation growth method in 1-octadecene solvent and oleic acid solvent, respectively. The photodetectors based on single micro-belt showed a broadband spectral photoresponse with high responsivity (5562 A/W) and detectivity (3.01×10 12 Jones). It demonstrates significant application potential in the visible and NIR photodetection. GeSe micro-sheets and micro-belts have been synthesized by a facile one-pot wet chemical method in 1-octadecene solvent and oleic acid solvent, respectively. The adsorption of more oleic acid molecules on the (002) plane promoted growth along [010] direction of the GeSe micro-belts and limited carrier transport in this direction, resulting in higher carrier concentration and mobility of the GeSe micro-belts. The performance of the photodetectors based on the single GeSe micro-sheet and the single GeSe micro-belt was investigated under illumination at 532 nm, 980 nm and 1319 nm. Both, photodetectors based on a single GeSe micro-sheet and a single GeSe micro-belt, exhibit a high photoresponse, short response/recovery times, and long-term durability. Moreover, the photodetector based on a single GeSe micro-belt displays a broadband response with a high responsivity (5562 A/W at 532 nm, 1546 A/W at 980 nm) and detectivity (3.01×10 12 Jones at 532 nm, 8.38×10 11 Jones at 980 nm). These excellent characteristics render single GeSe micro-belts very interesting for use as highly efficient photodetectors, especially in the NIR region.
研究领域:
材料科学
·
光学工程
·
纳米技术
✓ 已验证
DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2026
·
IF 7.2
Yu Zha,Fangxue Chen,Fanju Meng,Xiancheng Ning,Tianyu Guo,Danxia Liu,Jin Han,Yugeng Wen,Jianbei Qiu
Transition metal ion-activated phosphors are promising candidates for broadband near-infrared (NIR) spectroscopy applications. However, achieving high external quantum efficiency (EQE) and good thermal stability in low-dimensional halide perovskites has presented challenge. Herein, a design strategy based on cerium doping has been developed for realizing high-efficiency broadband NIR tetravalent molybdenum (Mo 4+ ) luminescence to overcome multivalent Mo-related lattice defects and self-absorption. Particularly, Ce 4+ , Mo 4+ -codoped Cs 2 TeCl 6 shows broadband NIR emissions ranging from 800–1300 nm with a full width at half-maximum of 186 nm, high EQE > 50% and good thermal stability (85%@150 °C). Experimental and theoretical studies verify the synergistic effects of breakdown of site symmetry, reduction of lattice defects and relaxation of the spin-selection rule of Mo 4+ . Moreover, gas sensing of toxic toluene with low detection limit and high sensitivity is presented due to strong molecular interaction-induced luminescence quenching. These findings provide new opportunities for broadband NIR spectroscopy applications.
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产品关联
DOI
高影响因子
Advanced Optical Materials
·
2026
·
IF 7.2
Zhidan Liu,Qiufeng Shi,Lei Wang,Haijie Guo,Dawei Wang,Konstantin V. Ivanovskikh,Jianwei Qiao,Xiao-Jun Wang
Broadband and thermally robust near-infrared (NIR) emitters are essential for advanced photonic applications from night-vision imaging to biological sensing and spectroscopy. However, transition-metal-activated phosphors face an intrinsic coupling between emission bandwidth and thermal stability, with ultrabroad spectra accompanied by severe thermal quenching. Here, we demonstrate a dual-site occupancy strategy mitigating this trade-off by enabling Ni 2+ to occupy two crystallographically distinct octahedral sites in double perovskite Ca 2 AlTaO 6 . The optimized Ca 2 AlTaO 6 :Ni 2+ phosphor exhibits broadband NIR-II emission (1050–1650 nm) with a 225 nm full width at half maximum, retaining 61% of room-temperature luminescence intensity at 423 K. Spectral deconvolution, lifetime analysis, and structural characterization reveal the concentration-dependent emission peak red-shift (1260 → 1310 nm) originates from dynamic Ni 2+ redistribution between the two sites, with controllable spectral broadening. This site-selective emission mechanism provides a reliable route for tunable NIR-II spectral engineering. A phosphor-converted LED based on a commercial red excitation chip delivers efficient NIR-II output, validated in night-vision imaging, biological tissue transillumination, and qualitative chemical identification. These results establish dual-site occupancy as a viable, generalizable design principle for broadband, thermally stable NIR emitters, with direct relevance to photonic light-source engineering.
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DOI
高影响因子
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