Laser & Photonics Reviews
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2024
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IF 9.8
Xiaoxi Li,Mengling Xia,Weiwei Li,Ping Lu,Xianghua Zhang,Yinsheng Xu
Lead-free halide perovskites (LHP) have attracted extensive attention in the field of next-generation solid-state lighting. However, single perovskite phosphor with tunable white-light emission and ultra-high photoluminescence quantum yield (PLQY) are rare. Here, the tunable dual-color emission LHP phosphor is developed with a near-unity PLQY of 99.5%. The LHP phosphor comprises Cs 2 NaInCl 6 : Sb 3+ /Bi 3+ and Cs 2 InCl 5 ·H 2 O: Sb 3+ /Bi 3+ crystals, with the transition between these two perovskite structures being adjustable by the concentration of Na + . The addition of NaCl inhibits the hydrolysis of the [Sb(H 2 O)Cl 5 ] 2− octahedron, resulting in 3D connected [SbCl 6 ] 3− octahedron with less Jahn-Teller distortion, and the PLQY of LHP is greater than 90%. Finally, the white-light diode device is fabricated by assembling the LHP with a ultraviolet light-emitting diode chip and the white light-emitting diode device achieved Commission Internationale de l'Eclairage color coordinates of (0.34, 0.33), correlated color temperature of 4936 K, and a high color rendering index of 92.9. The LHP perovskite exhibited multimodal luminescence when excited by 365, 335, and 310 nm UV light, showing the multi-mode anti-counterfeiting capabilities of the LHP crystals.
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Journal of Physical Chemistry C
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2024
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IF 3.3
Shipei Sun,Peng Huang,Xian-gang Wu,Cuili Chen,Xiangmin Hu,Zelong Bai,Anatoly Pushkarev,Haizheng Zhong
The ligand exchange of perovskite nanocrystals is crucial for achieving highly efficient and stable light-emitting diodes (PeLEDs). Here, we report the shape transformation of CsPbBr3 nanocrystals from dodecahedron to cube during the ligand exchange using dimethylammonium bromide (DDAB). The shape transformation is thoroughly investigated by experimental characterization and density functional theory calculations, revealing the surface selective etching effect of DDAB. Among the {002}, {220}, and {112} facets in dodecahedron CsPbBr3 nanocrystals, DDAB has the highest binding energy with the (220) facet, which accounts for surface selectivity and shape transformation. PeLEDs based on DDAB-capped CsPbBr3 nanocrystals exhibit average and maximum external quantum efficiencies (EQE) of 14.6 and 18.5%, respectively. Therefore, the ligand exchange using DDAB is an effective strategy for the production of high-quality perovskite nanocrystals for optoelectronic applications.
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Nano-Micro Letters
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2024
·Vol. 16
·期 1
·1-22
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IF 31.6
Hu Jiawang,Qian Hao,Han Sanyang,Zhang Ping,Lu Yuan
Photoresponsive black phosphorus (BP)/Ti 3 C 2 T x composites were synthesized by a self-assembly strategy.
Enhanced gas sensitive property was achieved by visible light modulation.
Light activated virtual sensor array was fabricated based on BP/Ti 3 C 2 T x composite.
Diagnosis of coronary heart disease was achieved with the help of machine learning.
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Materials
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2024
·Vol. 17
·期 16
·3988
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IF 3.1
Liyuan Cheng,Qinglin Quan,Liang Hu
Van der Waals (vdW) heterostructures are mainly fabricated by a classic dry transfer procedure, but the interface quality is often subject to the vdW gap, residual strains, and defect species. The realization of interface fusion and repair holds significant implications for the modulation of multiple photoelectric conversion processes. In this work, we propose a thermally mismatched strategy to trigger broad-band and high-speed photodetection performance based on a type-I heterostructure composed of black phosphorus (BP) and FePS3(FPS) nanoflakes. The BP acts as photothermal source to promote interface fusion when large optical power is adopted. The regulation of optical power enables the device from pyroelectric (PE) and/or alternating current photovoltaic (AC–PV) mode to a mixed photovoltaic (PV)/photothermoelectric (PTE)/PE mode. The fused heterostructure device presents an extended detection range (405~980 nm) for the FPS. The maximum responsivity and detectivity are 329.86 mA/W and 6.95 × 1010Jones, respectively, and the corresponding external quantum efficiency (EQE) approaches ~100%. Thanks to these thermally-related photoelectric conversion mechanism, the response and decay time constants of device are as fast as 290 μs and 265 μs, respectively, superior to current all FPS-based photodetectors. The robust environmental durability also renders itself as a high-speed and broad-band imaging sensor.
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SENSORS AND ACTUATORS B-CHEMICAL
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2024
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IF 8
Shijie Sun,Yancao Chen,Ruili Xu,Jinhui Shang,Huiwen Li,Bin Xiong,Xiao-Bing Zhang
To achieve reliable detection of viral antigens, it is critical to develop of antifouling sensor arrays. Herein, we introduce a robust strategy for facile design and construction of hydrogel-based antifouling sensor arrays with a light-responsive bifunctional crosslinker. Upon UV light irradiation, the capture antibodies and blocking agents can be chemically conjugated onto the hydrogel interface to generate antifouling sensor arrays with desirable protein patterns with the aid of a hole-array mask. We demonstrated the antifouling sensor arrays for the quantitative detection of SARS-CoV-2 spike protein with satisfying sensitivity and high signal-to-background ratio. We further confirmed the prepared multiplexed sensor arrays for the detection of multiple viral proteins simultaneously in complex environments. Moreover, we achieved the quantitative detection of synthetic virus-like particles and SARS-CoV-2 pseudoviruses with satisfying detection performances. All these evidences suggested that the hydrogel-based antifouling sensor arrays holds great potential for quantitative analysis of viral antigens and virus particles in real applications.
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LANGMUIR
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2025
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IF 3.9
Naixin Wei,Wei Chen,Cuiyun Zhang,Zhenwei Jiang,Xinping Wang
Supramolecular chemistry provides more possibilities to design responsive macromolecular surfactants. In this study, poly(N-isopropylacrylamide) (Pnipam) with (azobenzene) AZO as the end group (Pnipam-AZO) was synthesized (P1 and P2), and then an inclusion complex was formed by Pnipam-AZO and β-cyclodextrin-modified poly(ethylene oxide) (PEO-CD). The host–guest interaction was characterized by using UV–vis spectra and GPC. The surface activity of P2 and the PEO-CD inclusion complex (P2@CD-PEO) was studied. Compared with Pnipam-AZO, the surface tension of P2@CD-PEO was higher. The inclusion of the hydrophobic AZO by CD and the attachment of the hydrophilic PEO to P2 lead to the decreasing adsorption amount of Pnipam, which results in increasing surface tension of P2@CD-PEO. Under UV light, the photoisomerization of AZO leads to decoupling of P2 and PEO-CD. Accordingly, the surface tension decreased, and this process was recyclable. The aggregation behaviors of P2@CD-PEO were studied by dynamic laser light scattering. The size and structure of the aggregates formed by P2@CD-PEO were light-responsive. The decoupling of PEO-CD and Pnipam-AZO made the size of the aggregates increase under UV light due to the increasing hydrophobicity of Pnipam-AZO. The emulsification study showed that P2@CD-PEO was an effective emulsifier, which could form oil-in-water emulsion for the petroleum ether and water system. The SEM images of the freeze-dried emulsion showed that the emulsion was stabilized by P2@CD-PEO aggregates that adsorbed at the oil and water interface. Also, demulsification occurs under UV light, and the emulsification and demulsification processes are recyclable.
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ACS Applied Materials & Interfaces
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2024
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IF 8.3
Jiangjie Wu,Wenjing Liu,Shuangying Tang,Sailong Wei,Huiwen He,Meng Ma,Yanqin Shi,Yulu Zhu,Si Chen,Xu Wang
The azobenzene moiety is an intriguing structure that deforms under UV and visible light, indicating a high potential for biomedical applications. However, its reaction to UV radiation is problematic because of its high energy and low tissue penetration. Unlike previous research on azobenzene structures in photoresponsive materials, this study presents a novel method for imparting photostimulation-responsive properties to liposomes by incorporating the azobenzene moiety and extending the light wavelength with up-conversion nanoparticles. First, the azobenzene structure was incorporated into a phospholipid molecule to create Azo-PSG, which could spontaneously form vesicle assemblies in aqueous solutions and isomerizes within 1 h of light exposure. Furthermore, orthogonal up-conversion nanoparticles with a core–shell structure were created by sequentially growing lanthanide rare earths in the shell layer, which efficiently converts near-infrared light into ultraviolet (400 nm) and blue-green (540 nm) light. Combining these core–shell structured up-conversion nanomaterials with Azo-PSG molecules resulted in the creation of a near-infrared light-responsive smart nanoliposome system. Under near-infrared light irradiation, UCNPs emit UV and blue-green light, causing conformational changes in Azo-PSG molecules that allow drug release within 6 h. The reversible structural shift of Azo-PSG in response to light stimulation holds enormous promise for improving drug release techniques. This novel technique also expands the usage of UV-responsive compounds beyond their constraints of low penetration and high biotoxicity, allowing for rapid medication release under NIR light.
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EUROPEAN POLYMER JOURNAL
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2024
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IF 5.8
Yongkang Bai,Chunzi Lv,Yufang Liao,Longzhang Niu,Yuqi Li,Didi Wen,Lina Niu
The rapid progress of soft actuators across various domains has attracted considerable attention due to their diverse applications. However, the increasing demand for real-time feedback and closed-loop control in complex scenarios requires self-sensing capabilities for autonomous intelligent soft actuators. To address this issue, we proposed a self-powered sensing shape memory actuator based on polyvinylidene fluoride/carbon nanotube composites. These composites exhibited outstanding thermal and near-infrared light-responsive shape memory performance, achieving a shape recovery ratio close to 100 %. The reversible shape memory effects were achieved through a bilayer-structured material, thereby expanding its application as soft actuators. Moreover, the composites were used to fabricate a triboelectric nanogenerator (TENG) that exhibited high pressure sensing performance with a sensitivity of 0.127 V kPa −1 . Through careful design, the self-sensing function of the shape memory actuators was accomplished by the self-powered sensing of TENG driven by the reversible shape memory effects. Furthermore, we demonstrated practical applications of the self-powered sensing shape memory actuators by fabricating a light-control switch and a smart gripper. The gripper, in particular, demonstrated material recognition based on the actuating and sensing functions of the actuators. Overall, this work provides a feasible method to fabricate shape memory actuators with a self-powered sensing function, expected to have broad application potential in soft robotics, wearable electronics and other integrated multi-functional devices.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Shuo Yang,Jianhao Liang,Nan Wang,Xiao-Kun Ouyang,Junhua Hu
Infected wounds are highly susceptible to bacterial contamination, which not only delays the healing process but also leads to a range of complications. NO is one of the most widely used gas molecules in wound treatment strategies due to its potent antibacterial and healing-promoting properties. However, excessive NO in infected wounds can damage cellular components and exacerbate inflammation. Therefore, precise control of NO dosage and targeted delivery to the wound site are crucial for effective treatment. Herein, a cationic hydrogel was constructed using modified guar gum and polyvinyl alcohol to enhance antibacterial effects, with guanidine-modified chitosan (Met-CS) and the photosensitizer sodium copper chlorophyllin (SCC) incorporated to create a light-triggered NO release system. Both in vitro and in vivo experiments confirmed that the proposed hydrogel exhibits excellent antibacterial performance, anti-inflammatory effects, and wound healing capabilities, demonstrating its potential for precise therapeutic applications.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Xiangming Li,Bo Sun,Qingpeng Chen,Hiang Kwee Lee,Bo Shi,Hegang Ren,Haitao Li,Zequn Ma,Meng Fu
The reduction of 4-nitrophenol (4-NP) into 4-aminophenol (4-AP) is an important reaction in both chemical manufacturing and environmental protection. The design of a highly active, multifunctional and reusable catalyst for efficient 4-NP decontamination/valorization is therefore crucial to bring in economic and societal benefits. Herein, we achieve an efficient plasmonic-photothermal catalyst of Pd nanoparticles by growing them on graphene-polyelectrolytes self-assembly nanolayers via an in situ green reduction approach using polyelectrolyte as the reductant. The as-fabricated catalyst shows high catalytic behaviors and good stability (maintained over 92.5 % conversion efficiency after ten successive cycles) for 4-NP reduction under ultra-low catalyst dose. The rate constant and turnover frequency were calculated at 0.197 min −1 and 7.79 mmol g −1 min −1 , respectively, which were much higher than those of most reported catalysts. Moreover, the as-prepared catalyst exhibited excellent photothermal conversion efficiency of ∼77 % and boosted 4-NP reduction by ∼2-fold under near-infrared irradiation (NIR). This study provides valuable insights into the design of greener catalytic materials and facilitates the development of multifunctional plasmonic-photothermal catalysts for diverse environmental, chemical, and energy applications using NIR.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2024
·
IF 11.2
Xiaoxiang Ren,Jian Wang,Yan Wu,Yuan Zhang,Jieyuan Zhang,Long Bai,Jinlong Liu,Guangfeng Li,Peiran Song,Zhongmin Shi,Jiacan Su
Three-dimensional (3D) bioprinting has revolutionized tissue engineering by enabling precise fabrication with bioinks. Among these techniques, digital light processing (DLP) stands out due to its exceptional resolution, speed, and biocompatibility. However, the progress of DLP is hindered by the limited availability of suitable bioinks. Currently, some studies involve simple mixing of different materials, resulting in bioinks that lack uniformity and photopolymerization characteristics. To address this challenge, we present an innovative one-pot synthesis method for bioinks based on methacrylated gelatin/alginate with hydroxyapatite (HAP). This approach offers significant advantages in terms of efficiency and uniformity. The synthesized bioinks demonstrate excellent printability, stability, and notably enhanced mechanical properties, facilitating optimal in vitro compatibility. Additionally, the HAP-hybrid bioinks printed scaffolds demonstrated impressive bone repair capabilities in vivo compared with pure organic bioinks. In conclusion, the Gel/Alg/HAP bioinks presented herein offer an innovative solution for DLP bioprinting within the field of bone tissue engineering. Their multifaceted advantages help overcome the limitations of restricted bioink choices, pushing forward the boundaries of bioprinting technology and contributing to the progress of regenerative medicine and tissue engineering.
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ACS Sustainable Chemistry & Engineering
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2024
·
IF 7.1
Xiaoli Zhou,Jinhong Deng,Zhe Li,Yun Cheng,Jie Zhou,Min Jiang,Weiliang Dong
Conversion of PET waste into carbon dots (CDs) is an attractive approach to plastic pollution control. However, the preparation of red–yellow CDs is still challenging, and the preparation methods are complex. In this study, a one-pot solvothermal method was developed for the preparation of CDs from PET waste. Through nitrogen source and solvent screening, multicolor (blue–red) CDs with high quantum yield (QY) were prepared. The reaction temperature and catalyst dosage significantly influence the production yield and QY of the CDs. The optimized CD showed a relative yield of 42.7%, a high QY of 47.8%, and a red photoluminescence color. The morphology, crystal structure, surface chemistry, and optical performance of CDs were characterized. The red and yellow fluorescence was mainly due to the molecular state mechanism. White light-emitting diodes with cool and warm white light and a high color rendering index were constructed using yellow and red CDs.
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