Light-Science & Applications
·
2025
·Vol. 14
·期 1
·1-10
·
IF 23.4
Wang Song,Liu Shihao,Wang Ting,Bai Jialin,Peng Jingyu,Zhang Hanzhuang,Xie Wenfa,Ji Wenyu
ZnO nanoparticles (NPs) play a crucial role in advancing quantum-dot light-emitting diodes (QLEDs) because of their excellent electron transport properties. While the conductivity of ZnO is determined by both the density and mobility of charge carriers, a previously overlooked problem is that excessive carrier density in ZnO can lead to nonradiative Auger recombination at the quantum-dot/ZnO interface. An ideal electron transport layer should possess both high mobility and low carrier density. Here, we achieve such transport properties in ZnO NP films through operando recrystallization, a process triggered by the diffusion of Al ions from the cathode under acidic conditions. This diffusion induces the coalescence of neighboring ZnO NPs, forming defect-passivated, long-range ZnO crystals. When used as the electron transport layer in QLEDs, recrystallized ZnO NPs enhance the external quantum efficiency from 17.2% to 33.7% compared with devices with conventional ZnO electron transport layers. These findings offer valuable insights into the development of charge transport materials for high-performance optoelectronic devices.
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高影响因子
ADVANCED MATERIALS
·
2019
·Vol. 31
·期 39
·1903970
·
IF 25.809
Shihong Deng,Jingjun Wu,Michael D. Dickey,Qian Zhao,Tao Xie
3D printing has witnessed a new era in which highly complexed customized products become reality. Realizing its ultimate potential requires simultaneous attainment of both printing speed and product versatility. Among various printing techniques, digital light processing (DLP) stands out in its high speed but is limited to intractable light curable thermosets. Thermoplastic polymers, despite their reprocessibility that allows more options for further manipulation, are restricted to intrinsically slow printing methods such as fused deposition modeling. Extending DLP to thermoplastics is highly desirable, but is challenging due to the need to reach rapid liquid–solid separation during the printing process. Here, a successful attempt at DLP printing of thermoplastic polymers is reported, realized by controlling two competing kinetic processes (polymerization and polymer dissolution) simultaneously occurring during printing. With a selected monomer, 4-acryloylmorpholine (ACMO), printing of thermoplastic 3D scaffolds is demonstrated, which can be further converted into various materials/devices utilizing its unique water-soluble characteristic. The ultralow viscosity of ACMO, along with surface oxygen inhibition, allows rapid liquid flow toward high-speed open-air printing. The process simplicity, enabling mechanism, and material versatility broaden the scope of 3D printing in constructing functional 3D devices including reconfigurable antenna, shape-shifting structures, and microfluidics.
研究领域:
材料科学
·
化学工程
·
制造技术
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高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Jianguo Wang,Meng Chen,Xiangkun Elvis Cao,Xianglei Liu,Peidong Wei,Qiao Xu,Haichen Yao,Enda Ci,Qingfeng Zhang,Shushan Lv,Yang Tian,Yongliang Li
Thermal energy, encompassing both heating and cooling demands, accounts for the largest share of global energy consumption. Harvesting thermal energy from the environment, including the Sun and darkness, holds promise for decarbonizing thermal sectors, but suffers from low efficiency and intermittency. Here, inspired by ginkgo leaves featuring wax-coated vertical palisade cells, a 24-h bidirectional thermal energy harvesting approach is developed by integrating spectrally selective aerogels with anisotropic composite phase change materials (CPCMs). During daytime, sunlight is captured, converted into heat, and stored in anisotropic CPCMs with high axial thermal conductivity (24.16 W·m −1 ·K −1 ) and an anisotropy ratio of 3.7. Under one-sun irradiation, a high solar thermal energy storage efficiency of 87.5% with a peak temperature of 382.3 K is achieved by leveraging spectrally selective aerogels exhibiting “greenhouse effects”. At night, a maximum radiative cooling power of 118.8 W·m −2 is attained, enabling cold energy storage at a temperature 4.0 K below ambient. The proposed leaf-inspired device operates continuously over 24 h, delivering annual thermal energy savings of 5321.4 MJ·m −2 ·yr −1 , outperforming standalone solar thermal and radiative cooling systems by 44.8% and 223.3%, respectively. This bioinspired bidirectional energy harvesting strategy employing both solar and outer space resources, establishes a promising approach toward a carbon-neutral thermal energy supply.
研究领域:
可再生能源
·
热工工程
·
材料科学
·
可持续技术
·
仿生学
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高影响因子
ADVANCED MATERIALS
·
2025
·Vol. 37
·期 41
·e09758
·
IF 26.8
Yupeng Huang,Shichao Lv,Xueliang Li,Jianrong Qiu,Shifeng Zhou
Near-infrared second window (NIR-II, 1000–1700 nm) light sources present remarkable scientific and technological promise, with wide-ranging applications spanning biomedical imaging, biosensing, and related fields. However, most of the available candidates are in bulk form and it is urgently required to develop mini light sources. Herein, a broadband NIR-II mini fiber-type light source equipped by Ni 2+ activated glass composite fibers is proposed and investigated. It is shown that the transparent glass composite exhibits broadband NIR-II emission with a full width half-maximum approaching 240 nm and an internal quantum efficiency (IQE) larger than 50% by rational control of nanocrystallization. Additionally, the corresponding glass composite fibers are prepared, demonstrating efficient broadband response and distinct on-off gain in NIR-II region. Benefited from above features, an all-fiber mini light source by fusing glass composite fibers with commercial passive fibers is successfully constructed and demonstrates its promising applications for NIR-II imaging. These findings demonstrate significant progress in the development of NIR-responsive photonic materials, enabling advanced applications in photonic technology.
研究领域:
光子学
·
材料科学
·
生物医学成像
·
光学传感
·
光纤技术
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高影响因子
JOURNAL OF POLYMER RESEARCH
·
2025
·Vol. 32
·期 9
·1-10
·
IF 2.8
Lun Ziming,Song Lina,Ai Jiaoyan,Zhong Tulian,Xian Wenqi,Liu Baohua
A series of CO 2 -based UV cured polyurethane acrylate with good flexibility and mechanical strength were prepared using polycarbonate diol (PECD), diphenylmethane diisocyanate (MDI), hydroxyethyl acrylate (HEA), and tetrahydrofuran acrylate (THFA) as raw materials. Simultaneously compared with traditional polyester (PCLD)-based and polyether (PPG)-based UV cured polyurethane acrylates. By analyzing the infrared spectra of prepolymer and PECD-PUA, the generation of characteristic absorption peaks indicates the successful synthesis of PECD-PUA. In addition, compared with the uncured film, the carbon carbon double bond absorption peak (810 cm -1 ) of the cured film disappeared, indicating that the double bond had undergone a reaction. The mechanical properties, hardness, water contact angle, and solvent absorption properties of UV-cured polyurethane were studied. The results show that the CO 2 -based material PECD has excellent properties, the tensile strength can reach 9.83 MPa, and the elongation of break reach 82.92% and the cured UV-PECD-PU film has high hardness (pencil hardness: HB) All cured films exhibited excellent thermal stability (more than 250 ℃) through TGA analysis. This paper synthesized environmentally friendly CO 2 -based photopolymerization polyurethane, providing direction for the resource utilization of carbon dioxide-based materials.
研究领域:
高分子科学
·
材料工程
·
环境科学
·
化学合成
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高影响因子
DYES AND PIGMENTS
·
2025
·
IF 4.2
Haijun Ning,Yuxin Yang,Saran Long,Wen Sun,Jianjun Du,Jiangli Fan,Xiaojun Peng
Both red-light chemiluminescence (CL) emission and high CL efficiency are desirable highly favorable for deep-tissue imaging, however, it was usually achieved by transferring the energy from a CL donor to a fluorophore acceptor based on the CL resonance energy transfer (CRET), which is significantly affected by the spectral overlap range and distance between them. Herein, a red-light CL emitter (L-ISN) was synthesized by conjugating the isoindole BODIPY with the phthaloyl hydrazine moiety (a luminol derivative). When the phthaloyl hydrazine moiety was initiated by 1 O 2 , the released reaction energy can be transferred to the whole molecule through intramolecular energy transfer, showing an astonishingly improved CL efficiency by 13 times than luminol. Besides, the CL of L-ISN can penetrate tissues thicker than 2.0 cm, and the limit of detection (LOD) was calculated to be about 52.87 nmol L −1 1 O 2 . When L-ISN nanoparticles (NPs) were prepared by using F127 as the surfactant, L-ISN NPs successfully detected intracellular 1 O 2 and distinguished inflammation tissue in vivo . We believe this study will provide a novel idea for the design of red-light CL emission probe with higher brightness in the field of detection 1 O 2 .
研究领域:
生物医学工程
·
分子影像学
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Junyu He,Tongqing Sun,Min Li,Anshi Chu,Xiujuan Zhuang
The realization of stable single-component white light emission in metal halide perovskites is still challenging due to the fast halide ion migration and narrow luminescence bands. In this work, all-inorganic single CsPbCl x Br 3−x perovskite microplates with stable red-blue-green triple color light emission are prepared by introducing europium ions Eu 3+ as dopants. Eu doping effectively suppresses ion migration and enables two spatially separated halide phases with stable dual-wavelength emissions. Furthermore, the incorporation of Eu 3+ compensates for the absence of red-light emission, thereby yielding a superior white emission with exceptional quality. The color rendering index of triple-color-emitting perovskites can be tuned successfully by controlling the halogen ratios, and the optimal microplate achieved a Commissions Internationale de l’Eclairage (CIE) coordinates of (0.32, 0.32). The results present a new enlightenment for the preparation of low-cost single-component white light materials.
研究领域:
材料科学
·
光电
·
光子学
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高影响因子
JOURNAL OF PHYSICAL CHEMISTRY A
·
2025
·
IF 2.8
Keting Zhou,Xiaoyue Yang,Hanlin Ren,Yu Xia
Herein, we report a visible light-induced disulfide bond reduction system compatible with peptide and protein sequencing by mass spectrometry (MS). The reaction proceeds via a single-electron transfer (SET) mechanism, utilizing thioxanthone (TX) as the photocatalyst and 2,3-dihydrofuran (DHF) as the cocatalyst. During the process, TX is first exited to its triplet state under 420 nm light irradiation, followed by SET from DHF to generate a TX radical anion. Disulfide bond cleavage occurs promptly after SET from the TX radical anion, yielding the thiol products. Major intermediates, including the TX radical anion, DHF radical, and thiyl radical, have been directly detected by nanoelectrospray ionization online monitoring or after radical trapping. As a proof-of-concept, we have coupled the visible light-induced disulfide reduction with top-down protein MS analysis, achieving 47% sequencing for lysozyme (4 disulfide bonds, 14 kDa), with performance comparable to conventional methods. In contrast to UV-induced disulfide reduction systems, the mild conditions of the visible light-induced reduction make it promising for further development in the analysis of biopharmaceuticals, such as antibodies and antibody-drug conjugates, where sequencing and disulfide bond mapping are critical.
研究领域:
生物化学
·
分析化学
·
光生物学
·
质谱分析
·
蛋白质组学
·
有机化学
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高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Qinglong Wang,Renfeng Dong,Chun Wang,Shuyu Xu,Decheng Chen,Yuying Liang,Biye Ren,Wei Gao,Yuepeng Cai
Synthetic micro/nanomotors fueled by glucose are highly desired for numerous practical applications because of the biocompatibility of their required fuel. However, currently all of the glucose-fueled micro/nanomotors are based on enzyme-catalytic-driven mechanisms, which usually suffer from strict operation conditions and weak propulsion characteristics that greatly limit their applications. Here, we report a highly efficient glucose-fueled cuprous oxide@N-doped carbon nanotube (Cu2O@N-CNT) micromotor, which can be activated by environment-friendly visible-light photocatalysis. The speeds of such Cu2O@N-CNT micromotors can reach up to 18.71 μm/s, which is comparable to conventional Pt-based catalytic Janus micromotors usually fueled by toxic H2O2 fuel. In addition, the velocities of such motors can be efficiently regulated by multiple approaches, such as adjusting the N-CNT content within the micromotors, glucose concentrations, or light intensities. Furthermore, the Cu2O@N-CNT micromotors exhibit a highly controllable negative phototaxis behavior (moving away from light sources). Such motors with outstanding propulsion in biological environments and wireless, repeatable, and light-modulated three-dimensional motion control are extremely attractive for future practical applications.
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高影响因子
Advanced Optical Materials
·
2023
·Vol. 12
·期 3
·2301498
·
IF 9
Xin Li,Runda Guo,Chencheng Peng,Zhiyuan He,Xiangyu Zhu,Ben Chen,Liang Sun,Jiangshan Chen,Lei Wang
Quasi-2D perovskites have emerged as a promising material for the fabrication of perovskite light-emitting diodes (PeLEDs) owing to their excellent photoelectronic properties. The realization of efficient PeLEDs relies critically on the effective energy transfer and radiation recombination in quasi-2D perovskites. However, the performance of PeLEDs is hindered by the disordered distribution of n-values and a large number of surface defects in quasi-2D perovskites, which significantly impacts their practical application and further development. Herein, a passivation strategy utilizing the bifunctional additive sodium hexafluorophosphate (NaPF 6 ) is proposed. The introduction of PF 6 − anions substantially inhibits the formation of low-n phases, which can accelerate the effective energy transfer within the quasi-2D perovskites. Furthermore, the lone electron pairs in PF 6 − anions can pair with the uncoordinated Pb 2+ cations of perovskites to passivate defects. As a result, the champion green PeLED modified with NaPF 6 exhibits a remarkable external quantum efficiency (EQE) of 20.13% and a current efficiency (CE) of 67.54 cd A −1 , which represents a significant improvement compared with the 11.26% EQE and the CE of 37.38 cd A −1 of the control sample.
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高影响因子
Advanced Optical Materials
·
2022
·Vol. 11
·期 1
·2201888
·
IF 10.05
Yu Peng,Xing Wang,Lina Li,Huang Ye,Shuang Yang,Hua Gui Yang,Junhua Luo,Yu Hou
Circularly polarized luminescence (CPL) has recently caught increasing attention owing to its widespread applications from 3D display to quantum-based optical computation. Among various CPL-active materials, low-dimensional hybrid perovskites have risen to prominence, benefiting from their excellent structural flexibility and optoelectronic properties. However, the exploration of hybrid perovskites with white-CPL remains a challenge and most of them suffer from moisture instability. Here, a pair of moisture-resistant 1D hybrid perovskites, ( R -C 5 H 14 N 2 )PbBr 4 ·H 2 O ( 1R ) and ( S -C 5 H 14 N 2 )PbBr 4 ·H 2 O ( 2S ), are reported in which [PbBr 4 2− ] ∞ double chains are surrounded by chiral cations and water molecules forming the bulk assembled quantum-helix structures. The strong quantum confinement in these unique structures facilitates exciton self-trapping, which further synergizes the effect of chiral cations, endowing 1R and 2S with opposite broadband yellowish white-CPL with a luminescence dissymmetry factor ( g lum ) of 1.8 × 10 −3 and a color rendering index up to 81. Notably, the dehydrated 1R can be recovered in humid air (60% relative humidity) within a few minutes via reabsorption of water molecules, exhibiting excellent moisture resistance, which is much better than most reported hybrid perovskites. A new path is paved here to further exploration of moisture-resistant CPL-active materials for multifunctional applications.
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高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2019
·Vol. 40
·期 5
·631-637
·
IF 4.914
Zhenmin Xu,Ru Zheng,Yao Chen,Jian Zhu,Zhenfeng Bian
Ordered mesoporous Fe/TiO 2 was prepared by an evaporation-induced self-assembly method. The iron ions were in situ embedded in the pore wall of the TiO 2 framework. The catalyst has excellent light-assisted Fenton catalytic performance under UV and visible light irradiation. X-ray diffraction and transmission electron microscopy results showed that the TiO 2 samples have an ordered two-dimensional hexagonal pore structure and an anatase phase structure with high crystallinity . The ordered pore structure of the TiO 2 photocatalyst with a large specific surface area is beneficial to mass transfer and light harvesting. Furthermore, iron ions can be controlled by embedding them into the TiO 2 framework to prevent iron ion loss and inactivation. After five cycles, the reaction rate of the ordered mesoporous Fe/TiO 2 remained unchanged, indicating that the material has stable performance and broad application prospects for the purification of environmental pollutants .
研究领域:
材料科学
·
环境化学
·
催化化学
·
纳米科技
·
光化学
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高影响因子
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