ACS Sustainable Chemistry & Engineering
·
2021
·
IF 8.198
Liqing Li,Luo Feng,Yu Xiao,Wenqi Xie,Xiaoqi Sun
In this work, a new type of near-infrared (NIR) reflective yellow pigment with a general formula of [(Li0.4RE0.6Al0.6)x/2Bi1–x][MoxV1–x]O4 was prepared by a solid-phase reaction calcined at a high temperature of 700 °C. X-ray diffraction (XRD), scanning electron microscope (SEM), a UV–vis–NIR spectrophotometer, and other methods were used to characterize the structure, morphology, and optical properties of synthetic pigments. For a series of [(Li0.4RE0.6Al0.6)x/2Bi1–x][MoxV1–x]O4 pigments, when x > 0.2, bismuth vanadate changes from the monoclinic phase (space group I2/b(15)) to the tetragonal scheelite phase (space group I41/a(88)). The structures of the pigments are all tetragonal scheelite phases, and the difference in their color rendering is mainly due to the differences between the valence band and the conduction band and the difference in the band gap caused by different rare earth elements. The NIR reflectance (R %) and NIR solar reflectance (R* %) of [(Li0.4La0.6Al0.6)0.1Bi0.8][Mo0.2V0.8]O4 pigments are 96.64 and 93.10% (b* = 77.13, C* = 77.6), respectively. In the acid and alkali resistance test, the color difference values ΔE* of the pigment before and after soaking are less than 5. Finally, the thermal infrared test of the synthetic pigments and commercial pigments on galvanized plates without or with TiO2 was performed. The experimental results show that the temperature difference between the synthetic pigment and commercial bismuth yellow can reach 11 °C. Therefore, it is believed that the synthetic pigment can reflect more heat radiation from sunlight and has better heat insulation performance. The synthetic pigment has higher reflectivity than the commercially available bismuth vanadate pigment, showing its application potential.
研究领域:
材料科学
·
光学
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DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2026
·
IF 9.6
Youwang Long,Lei Zhong,Yuefei Xiang,Yunhai Zhu,Zaidong Chen,Yuanqing Kang,Lei Zhou,Mingmei Wu
Developing efficient near-infrared (NIR) luminescence materials is crucial for next-generation NIR phosphor-converted light-emitting diodes (pc-LEDs). Cr 3+ -activated materials exhibit broadband NIR emission, however, they suffer from low efficiency and severe thermal quenching at wavelengths beyond 900 nm. To overcome these drawbacknd Membrane Technology, School of Chemical Engineering and Technology, Sun Yat-sen Uns, an efficient energy transfer pathway from Cr 3+ to Ln 3+ (Yb 3+ , Tm 3+ ) in Cs 2 NaLuCl 6 (CNLC) double perovskite single crystals was established. The Cr 3+ singly doped crystal shows broadband NIR emission peaking at 970 nm with an internal quantum efficiency (IQE) of 73.1%. Through effective Cr 3+ sensitization, the NIR-II emissions at 996 nm (Yb 3+ ) and 1222 nm (Tm 3+ ) are enhanced, along with the significantly improved luminescent thermal stability. Moreover, the co-doped system also exhibits superior IQE of 86.6% for CNLC:3 mol%Cr 3+ ,9 mol%Yb 3+ and 71.6% for CNLC:3 mol%Cr 3+ ,5 mol%Tm 3+ . The developed crystals integrated into a 540 nm-driven NIR LED delivers a NIR radiation power of 80.4 mW at a driving current of 600 mA, enabling high-resolution bioimaging and night vision applications. This work provides insight into energy transfer engineering to boost the luminescent efficiency and thermal stability in NIR-emitting materials.
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DOI
高影响因子
Materials Today Bio
·
2026
·
IF 11
Qing Hu,Yingfei Wang,Wei Chen,Nan Feng,Keju Tao,Jie Wu,Ying Liu,Fan Zhou,Qing Hao,Daoping Xiang,Junjie Chi,Hong Liu
Nanomotors are appealing drug carriers with deep tissue penetration to overcome biological barriers. Though high motion efficiency has been achieved with NIR-II light driven nanomotors, insufficient directional control and material biocompatibility limit their broad application. Herein, leveraging commercially available liposomal doxorubicin (DOX) as a platform, we develop a magnetic-steering NIR-II light thermophoretic liposomal nanomotor (LipNM) by asymmetrically incorporating magnetic photothermal Fe 3 O 4 @Cu 9 S 8 nanoparticles into the lipid bilayer, firstly realizing directional nanoscale self-thermophoresis. The embedded Fe 3 O 4 @Cu 9 S 8 nanoparticles respond to a brief magnet stimulation for spatiotemporal steering and NIR-II irradiation with local temperature increase for self-thermophoresis of LipNMs, which further facilitate tumor tissue targeting and deep tumor penetration, respectively. The direction-controllable thermophoretic LipNMs demonstrate good biocompatibility and increase the delivery efficiency of DOX by 186% compared to passive liposomal doxorubicin. Owing to the targeted accumulation and deep tissue penetration at the tumor site, the therapeutic efficiency of LipNMs for breast cancer in vivo is as high as 94.9%, providing a promising strategy for cancer therapy.
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DOI
PubMed
高影响因子
Biomaterials Science
·
2026
·
IF 6.1
Rongjie Gao,Feiyan Chen,Yong Li,Zhengshuai Tang,Jinliang Liu
While combination therapies generally exhibit superior therapeutic outcomes compared to single-modality treatments, current photodynamic–chemodynamic (PDT/CDT) combination strategies remain limited by two major factors: (i) the restricted tissue penetration depth of light and (ii) the insufficient endogenous hydrogen peroxide (H2O2) concentration within the tumor microenvironment (TME), both of which compromise therapeutic efficacy. To overcome these obstacles, we developed an innovative hybrid nanorobot (EcN + UCNPs@mSiO2–MnO2–ZnPc) that integrates engineered Escherichia coli Nissle 1917 (EcN) with orthogonally emissive upconversion nanoparticles (C@3S). Specifically, MnO2 decomposes into Mn2+ under acidic TME conditions, subsequently catalyzing the conversion of H2O2 into cytotoxic hydroxyl radicals (˙OH) and oxygen, which exhibits dual effects of tumor cell eradication and hypoxia alleviation. Meanwhile, C@3S transforms 980 nm laser radiation into blue-violet emission, activating the EcN that preferentially colonizes tumor regions and overexpresses respiratory chain enzyme II (NDH-II), thereby replenishing H2O2 in situ and sustaining chemodynamic therapy (CDT). Additionally, zinc phthalocyanine (ZnPc) is excited by the 808 nm-converted red emission to generate singlet oxygen (1O2), further enhancing reactive oxygen species (ROS) accumulation and amplifying oxidative stress in tumor cells. Collectively, our findings demonstrate significant tumor growth inhibition through this self-amplifying ROS-generation mechanism. This multifunctional hybrid nanorobot offers a promising platform for precision cancer therapy with spatiotemporal controllability.
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DOI
PubMed
高影响因子
Laser & Photonics Reviews
·
2026
·
IF 10
Xujiang Liu,Yang Xu,Ling Luo,Yuanheng Mu,Mavlanjan Rahman,Pengpeng Dai,Xiaojun Wang
Achieving near-infrared (NIR) phosphors with broadband emission, robust thermal stability, high internal quantum efficiency (IQE), and excellent chemical durability remains a longstanding challenge, largely due to the fundamental trade-off between structural rigidity and flexibility. Here, we overcome this constraint by designing a novel series of garnet-type phosphors, BaY 2 Ga 4- x GeO 12 : x Cr 3+ (BYGG: x Cr 3+ ). The optimized composition BYGG:0.06Cr 3+ delivers an IQE of 93%, remarkable anti-thermal quenching behavior (103% emission retention at 423 K), and outstanding chemical stability (retaining 97% emission after 35 days in water). Notably, fine-tuning the Cr 3+ concentration broadens the emission bandwidth from 77 to 194 nm while preserving strong thermal stability (93%@423 K). This exceptional performance arises from the synergistic combination of ultra-high structural rigidity (Debye temperature, Θ D = 987 K), wide bandgap (5.10 eV), weak crystal field strength, and optimized 4 T 2 excited-state population. A fabricated NIR phosphor-converted LED (pc-LED) device demonstrates an NIR radiated power of 189.35 mW at 100 mA and a photoelectric conversion efficiency up to 12%. These results establish NIR phosphor BYGG: x Cr 3+ as a promising candidate for next-generation NIR pc-LED applications in night vision, non-destructive inspection, and biomedical imaging.
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DOI
高影响因子
Cancer Nanotechnology
·
2026
·
IF 4.8
Wang Xin,Liu Purui,Cao Chuanxi,Yan Qinhan,Qin Ruoshan,He Dengqi
Multidrug resistance and the acidic tumor microenvironment (TME) of malignant melanoma significantly limit the efficacy of conventional therapies. In this study, we constructed a near-infrared (NIR)-responsive thermosensitive phase-transition core–shell nanosystem (CaO-DOX-IR820@DLTP). This nanosystem uses CaO as the core, co-loading the chemotherapeutic drug doxorubicin (DOX) and the photothermal agent IR820, with a thermosensitive DLTP polymer shell as the outer layer. Characterization results show that the nanosystem has a uniform particle size, good stability, and excellent biocompatibility. Under NIR irradiation, the hyperthermia generated by IR820 induces phase transition and melting of the DLTP shell, enabling controlled release of DOX. Meanwhile, CaO reacts with water in the TME to trigger a chain exothermic reaction, enhancing photothermal therapeutic efficacy. The resulting Ca (OH)₂ effectively neutralizes lactic acid in the TME, thereby inhibiting M2 polarization of tumor-associated macrophages (TAMs) and alleviating lactate-mediated immunosuppression. Both in vitro and in vivo experimental results demonstrate that the nanosystem exhibits favorable tumor cell-killing effects, providing a novel strategy for the treatment of malignant melanoma. Graphical
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DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2026
·
IF 4.7
Da-zhong Ding,Ying Fan,Yan Zhang,Meng-meng Niu,Xing-tong Zhou,Zhong-hua Sun,Yang Li,Ping Gao,Lin Pei,Zhao Yang
Metronidazole (MNZ), a widely used clinical agent for anaerobic infections, requires light-protected handling during manufacturing, storage, and administration owing to its inherent photolability. Accordingly, co-crystallization offers a distinctive strategy to optimize pharmaceutical properties, while preserving the chemical integrity of pharmaceutical ingredients. To address these limitations, a novel cocrystal of MNZ with the food antioxidant butyl gallate (BG) was successfully synthesized using ultrasound-assisted solvent evaporation and liquid-assisted grinding (LAG). Fourier-transform near-infrared (FT-NIR) spectroscopy was employed for near-real-time and in-situ monitoring of the LAG synthesis process. Single-crystal X-ray diffraction confirmed a 2:1 MNZ:BG stoichiometry of the cocrystal, which was stabilized by hydrogen bonding and intermolecular interactions within the lattice. Comprehensive solid-state characterization, including powder X-ray diffraction, fourier transform infrared spectroscopy, FT-NIR, differential scanning calorimetry, thermogravimetric analysis, and scanning electron microscopy, revealed distinct spectral and thermal signatures relative to pure MNZ, BG, and their physical mixture, validating the new crystalline phase. The cocrystal demonstrated markedly improved critical attributes: a threefold increase in photostability (with an 81% reduction in photolytic impurities), excellent tabletability despite the poor compressibility of pure MNZ, and a 50% lower minimum inhibitory concentration against the clinically relevant anaerobic bacterium Clostridium sporogenes , compared to MNZ alone. In conclusion, this study demonstrated cocrystal engineering as an effective strategy for enhancing the key pharmaceutical properties of MNZ, with FT-NIR monitoring presenting a viable tool for process control.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2019
·Vol. 43
·期 25
·10025-10029
·
IF 3.069
Xinrong Shi,Fangjun Huo,Jianbin Chao,Yongbin Zhang,Caixia Yin
The role of hydrazine in production is not to be underestimated due to its strong reducibility. However, every coin has two sides. Hydrazine represents a great hazard to the environment, which cannot be ignored. Aiming to prevent harm to people or the environment, a new near-infrared fluorescent probe is presented. This probe is specifically designed to sense hydrazine vapor accumulated in an enclosed space and detect excessive hydrazine in water samples. It shows good selectivity and a turn-on effect, as well as a remarkable color change that can be distinguished by the naked eye. This effect has been utilized for quantitative detection in real water samples. Moreover, the color change of the probe adsorbed on filter paper can be observed by the naked eye to monitor the presence of hydrazine in the air in real time; this property of the probe is expected to be used for hydrazine detection in industrial environments.
研究领域:
分析化学
·
环境科学
·
生物传感
·
分子诊断
·
工业安全监测
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DOI
高影响因子
Advanced Optical Materials
·
2024
·Vol. 12
·期 16
·2303144
·
IF 8
Mengdi Xu,Zhongyuan Li,Qiqi Li,Tinglin Mou,Xuesong Wang,Dong Yan,Ye Li,Xianju Zhou,Zhen Fang,Lixin Ning
Broadband near-infrared (NIR) emissions in the long wavelength region with simultaneous high efficiency and thermal stability are desirable for NIR phosphor-converted light-emitting diodes (NIR pc-LEDs) light sources. Herein, a novel broadband NIR-emitting phosphor is reported, Ba 5 La 3 MgAl 3 O 15 :Cr 3+ (BLMAO:Cr 3+ ), which exhibits a NIR emission band spanning 700–1300 nm with maximum peak wavelength ( λ max ) at 925 nm and full width at half maximum of 160 nm. The optimized phosphor achieves an internal quantum efficiency of 66%, and the integrated emission intensity at 423 K remains 61% of that at room temperature, which surpasses most Cr 3+ -activated phosphors emitting in the long-wavelength NIR region ( λ max > 900 nm). The NIR luminescence properties are elucidated on the basis of density functional calculations of the multiple Cr 3+ local structures as generated by the Ba/La occupation disorder in the host material. The applications of the NIR phosphor in pc-LED devices are demonstrated, showing potential in night-vision and nondestructive examination. The results indicate that BLMAO:Cr 3+ is a promising phosphor with highly efficient and thermally stable broadband NIR emission for NIR LED light sources.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2019
·Vol. 29
·期 38
·1904416
·
IF 15.621
Huai Yang,Longfei Pan,Xiaoting Wang,Hui-Xiong Deng,Mianzeng Zhong,Ziqi Zhou,Zheng Lou,Guozhen Shen,Zhongming Wei
Mixed-valence states can bring unexpected unique phenomena, especially novel anisotropic physics, due to structural asymmetry, which originate from the discrepant distribution of atoms with different valence. This study reports an unexploited mixed-valence-driven quasi-1D Sn II Sn IV S 3 crystal, which exhibits widely and distinctively anisotropic polarized-light absorption reaching ≈3.4 from the deep ultraviolet to near-infrared region (250–850 nm). The fabricated polarization-sensitive photodetectors based on highly air-stable Sn II Sn IV S 3 nanowires display strong linear dichroism among the UV–vis–NIR spectrum with responsivity exceeding ≈150 A W −1 . Furthermore, the devices are further constructed onto a flexible polyethylene terephthalate (PET) substrate and the photoresponse remains roughly unchanged after repeated bending. This work based on novel mixed-valence-driven quasi-1D ternary sulfide Sn II Sn IV S 3 excites interest in low-symmetry semiconductors for developing broadly spectral polarization-sensitive photodetectors with environmental stability and mechanical flexibility.
研究领域:
材料科学
·
半导体物理
·
纳米光学
·
光电子学
·
凝聚态物理
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DOI
高影响因子
Journal of Materials Chemistry C
·
2019
·Vol. 7
·期 13
·3751-3755
·
IF 6.641
Jiao Ma,Hao Wu,Jianbei Qiu,Jing Wang,Qi Wang,Yong Yang,Dacheng Zhou,Jin Han
All-inorganic CsPbX3 (X = Cl, Br, and I) perovskite quantum dots have great potential in the field of white light emission owing to their excellent optical properties. However, to date the research on white light based on perovskite quantum dots has focused on downconversion luminescence, while the up-conversion luminescence properties of quantum dots have received less attention due to lacking the anti-Stokes luminescence properties of the material itself, resulting in limitations in upconversion white light emission to some extent. In this paper, upconversion lanthanide ion-doped fluoride nanoparticles and perovskite quantum dots are combined; the luminescence of the quantum dots is excited successfully by the upconversion luminescence of the nanoparticles and then composite samples with white emission are obtained with regulators of concentration.
研究领域:
光电子学
·
纳米材料
·
光子学
·
发光材料
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DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 31
·10483-10491
·
IF 6.4
Lei Wang,Xiaohong Ji,Qinyuan Zhang
Enhancing the near-infrared (NIR) photoresponse of molybdenum disulfide (MoS2) is essential for its photoelectric applications including photo communication. Herein, continuous Er-doped MoS2 (MoS2:Er) films were synthesized via a multi-step process. The enhanced NIR response of MoS2:Er at 808 nm and 980 nm is attributed to the characteristic absorption of Er3+ at both wavelengths and the increased traps introduced by Er-doping. The developed MoS2:Er/SiO2/p-Si heterojunction device possesses a rapid response time of ∼1.4 μs, a high detectivity of ∼3.67 × 1010 Jones, and a wide 3 dB bandwidth of 7.9 kHz at −0.5 V under 980 nm laser irradiation. The dark current of the heterojunction photodetector can be suppressed under 980 nm laser illumination for a period longer than 8 ms because of an extra light-generated field in the dark induced by the residual charges in the traps. Meanwhile, a NIR light communication system is demonstrated by employing the heterojunction detectors as the receiver. This work provides an alternative method to synthesize homogeneous metal-doped MoS2 films and an effective strategy to modulate the photoelectric performance of MoS2-based devices.
研究领域:
材料科学
·
光电子学
·
纳米技术
·
光电探测器
·
半导体物理
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DOI
高影响因子
危险品化学品经营许可证（带存储）