JOURNAL OF POLYMER RESEARCH
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2024
·Vol. 31
·期 7
·1-10
·
IF 2.6
Jia Yuan,Yang Juxiang,Ma Mingyang,Li Beibei,Liu Zhen
In order to obtain a polymer with good biocompatibility and aggregation induced luminescence, amino group was introduced into hyperbranched polysiloxane (HBPSi) structure by one-step transesterification, and two HBPSi containing terminal amino group (HBPSi-NH 2 ) were prepared. It was worth noting that both of them exhibit good luminescence characteristics. To further study the relationship between their structure and luminescence intensities, the structure and molecular weight distribution of these two HBPSi-NH 2 were studied by nuclear magnetic resonance spectroscopy (NMR), fourier transform infrared spectroscopy (FTIR) and gel permeation chromatography (GPC), the luminescence properties of the prepared HBPSi-NH 2 were characterized by fluorescence spectroscopy (PL). The results showed that the luminescence intensity of HBPSi-NH 2 was affected by the molecular weight and dispersion. HBPSi-NH 2 with low molecular weight can emit strong fluorescence, and in the good solvent (tetrahydrofuran, THF), the HBPSi-NH 2 exhibit strong dispersion and leads to the weakest luminescence performance, while in bad solvent, it can lead to the weak dispersion and the strongest luminescence performance.
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Advanced Composites and Hybrid Materials
·
2024
·Vol. 8
·期 1
·1-12
·
IF 23.2
Hao Changxiang,Chen Junde,Chen Yonghao,Jiang Chengwei,Wang Ziqiang,Pan Tingting,Cheng Xing,Tian Yanqing
Array-patterned anisotropic conductive films (A-ACFs) possessing periodically arranged conductive particles distributed in curable resins can have high circuit-bonding precision; however, the preparation of A-ACFs is a challenging work. On the other hand, the traditional electrolysis coating of metal on polymer cores as the conductive particles needs long preparation steps. Herein, a new simplified approach uses polyaniline (PANI) as an intermediate layer to wrap the polystyrene (PS) microspheres and also chelate silver to prepare silver-coated PS microspheres (PS@PANI@Ag). Through a series of experimental regulation, neat PS@PANI@Ag microspheres with an average diameter of 4.73 ± 0.13 μm possessing a silver layer of about 65 nm and weight percentage of 23.6% were prepared. For developing A-ACFs, an approach is loading the prepared particles into the microcavities with a diameter of 6 μm and depth of 4 μm in silicon template through rubbing assembly process, transferring these particles onto the surface of a kind of chosen polymerizable acrylate resin to keep their periodicity, and embedding these particles in the polymeric resin films. These A-ACFs were used to bond indium-tin-oxide (ITO) and flexible-printed circuits (FPC) with 200-μm spacing to achieve low connection resistance of 1.78 ± 0.03 Ω/0.4 mm 2 and high insulation resistance over 200 MΩ. After aging at 85 °C and 85% relative humidity condition for 120 h, the connection resistance change is less 9.8%, showing the bonded device’s good environmental stability. The anisotropic property was also demonstrated using a homemade device through turning LEDs on or off. Therefore, the conductive particles’ and A-ACFs’ preparation methods may provide new insights for ACFs’ designing strategy and application in industry. Graphical
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Chemical and Biological Technologies in Agriculture
·
2024
·Vol. 11
·期 1
·1-13
·
IF 5.2
Qu Yunhe,Zhang Pingping,Zhao Boya,Xu Jing,Shi Dongfang
The total polysaccharides extracted from Laetiporus sulphureus fruiting bodies by ultrasound-assisted complex enzyme method were separated by freeze–thaw combined with fehling reagent to prepare purified polysaccharide (LSPS1). The results of monosaccharide composition and molecular weight distribution demonstrated that LSPS1 contained galactose (51.83%), mannose (26.89%), fucose (16.13%) and glucose (5.15%), and the molecular weight was around 17.3 kDa. Methylation analysis indicated that the backbone of LSPS1 consisted of 1,6-Gal p residues, branched at O-2 of Gal p with t-Man p , t-Fuc p and t-Glc p residues as side chains. In addition, LSPS1 was used for the synthesis of SeNPs based on the redox system of sodium selenite and ascorbic acid. The L. sulphureus polysaccharide selenium nanoparticles (LSPS1–SeNPs) were characterized by UV, FT-IR, ICP-MS, EDX, DLS and SEM, inferring that LSPS1–SeNPs were stabilized with spherical and granular surface structure as well as a mean particle size of 96.72 ± 1.12 nm. Both of LSPS1 and LSPS1–SeNPs possessed strong antioxidant and hypoglycemic activities while the effects of LSPS1–SeNPs were superior to LSPS1. The findings provided valuable structural information for L. sulphureus polysaccharide, and will promote the application of SeNPs by L. sulphureus polysaccharide in potential antioxidant agent and hypoglycemic candidate. Graphical
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JOURNAL OF NANOBIOTECHNOLOGY
·
2025
·Vol. 23
·期 1
·1-19
·
IF 12.6
Zhang Yi,He Xiong,Mao Xiang,Yang Yukun,Li Faqi,Han Xiaofeng,Lu Hao,Tang Liang,Yang Yujun,Wang Yan,Du Yuling,Xu Wei,Wang Zhenyu
Non-invasive deep transdermal drug delivery is required for conditions such as keloids. However, the skin’s stratum corneum barrier is the primary obstacle for transdermal drug delivery methods. Most energy sources and operational controls are located externally, making it difficult to regulate the deep delivery of a drug once it has penetrated the stratum corneum barrier. Additionally, some transdermal administration methods that provide an internal energy source are frequently invasive and can cause damage. Therefore, achieving non-invasive drug delivery to the deep dermis for such conditions is challenging. Here, we propose sono-phase-change transfersomes (SPCTs) that stably encapsulate perfluoro-n-pentane within transfersomes. These SPCTs, combined with low-frequency and low-intensity ultrasound (LFLIU), are designed to create a two-stage transdermal drug delivery system that integrates passive and active penetration. In the first stage, the deformability of SPCTs enables them to stably and passively penetrate the epidermis. In the second stage, SPCTs undergo a phase change when ultrasound irradiation is applied, transforming into microbubbles. As the microbubbles penetrate deeper, they gradually expand, rupture, and release their encapsulated substances, providing supplementary energy from within to achieve active penetration. Both in vitro and in vivo experiments revealed a significant increase in the efficiency, depth, quantity, and distribution range of the contents entering the dermis. In addition, the SPCTs combined with the ultrasound group in the keloid nude mouse model exhibited the fastest keloid volume reduction, with various indicators demonstrating that its therapeutic effect was significantly better than that of the other control groups. These findings indicate that this two-stage transdermal drug delivery system can non-invasively and safely achieve deeper and higher-dose dermal administration, offering a new strategy for treating diseases such as keloid. Graphical The working principle of the two-stage transdermal drug delivery system.
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JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Lu Zhengnan,Wang Yi,Zhang Peng,Sheng Yang,Sun Yixin,Bradley Mark,Zhang Rong
Locally induced photodynamic therapy (PDT) with internally generated light could offer opportunities for the efficient treatment of deep tissue tumors and bacteria hidden in places where external light cannot reach. To achieve this, luminol acrylamide was synthesized and used to prepare nanospheres that were loaded with a polyurethane photosensitizer and the enzyme horseradish peroxidase. With H 2 O 2 the nanoparticles were self-illuminating and showed good antibacterial abilities and also anticancer effects via a PDT mechanism indicating efficient self-luminous functionality. The self-luminating nanospheres could potentially be used in sterilization and for cancer depression.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2025
·
IF 3.8
Chen Rong,Wang Mingyu,Nie Hailiang,Zhang Jinku,Yan Hongyuan
This work presents the development of a highly sensitive, selective, and efficient aptamer-based fluorescent sensor for detecting cortisol in human urine. Carbon quantum dots-nucleic acid aptamer (CQDs-Apt) synthesized with excellent photoluminescent properties and stability, were selected as the fluorescent probe. In the presence of MoS 2 -NSs, CQDs-Apt adsorbed onto the surface of MoS 2 -NSs via electrostatic and π-π interactions, leading to strong and rapid fluorescence quenching due to static quenching mechanism between them. The CQDs-Apt/MoS 2 -NSs complex can be employed as a “turn-on” fluorescent sensor for cortisol. Upon the addition of cortisol to the CQDs-Apt/MoS 2 -NSs sensor, the aptamer specifically binds to cortisol, thereby weakening the interaction between CQDs-Apt and MoS 2 -NSs. This results in the desorption of CDs-Apt from the surface of MoS 2 -NSs and the recovery of the fluorescence signal. Under optimized conditions, the CQDs-Apt/MoS 2 -NSs sensor exhibits a linear response to cortisol concentration (1–500 ng/mL) with a detection limit of 0.3 ng/mL. Furthermore, the sensor demonstrated excellent stability, high accuracy (92.0% to 97.7%), and superior precision (RSD ≤ 3.5%). This sensor has achieved a sensitive, rapid and efficient response to cortisol, and been successfully utilized for the detection of cortisol in human urine, demonstrating its potential for clinical cortisol detection.
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Light-Science & Applications
·
2022
·Vol. 11
·期 1
·1-12
·
IF 20.257
Zhang Yan,Miao Shihai,Liang Yanjie,Liang Chao,Chen Dongxun,Shan Xihui,Sun Kangning,Wang Xiao-Jun
The growing demand for spectroscopy applications in the areas of agriculture, retail and healthcare has led to extensive research on infrared light sources. The ability of phosphors to absorb blue light from commercial LED and convert the excitation energy into long-wavelength infrared luminescence is crucial for the design of cost-effective and high-performance phosphor-converted infrared LEDs. However, the lack of ideal blue-pumped short-wave infrared (SWIR) phosphors with an emission peak longer than 900 nm greatly limits the development of SWIR LEDs using light converter technology. Here we have developed a series of SWIR-emitting materials with high luminescence efficiency and excellent thermal stability by co-doping Cr 3+ -Yb 3+ ion pairs into Lu 0.2 Sc 0.8 BO 3 host materials. Benefitting from strong light absorption of Cr 3+ in the blue waveband and very efficient Cr 3+ →Yb 3+ energy transfer, the as-synthesized Lu 0.2 Sc 0.8 BO 3 :Cr 3+ ,Yb 3+ phosphor emits intense SWIR light in the 900–1200 nm from Yb 3+ under excitation with blue light at ~460 nm. The optimized phosphor presents an internal quantum yield of 73.6% and the SWIR luminescence intensity at 100 °C can still keep 88.4% of the starting value at 25 °C. SWIR LED prototype device based on Lu 0.2 Sc 0.8 BO 3 :Cr 3+ ,Yb 3+ phosphor exhibits exceptional luminescence performance, delivering SWIR radiant power of 18.4 mW with 9.3% of blue-to-SWIR power conversion efficiency and 5.0% of electricity-to-SWIR light energy conversion efficiency at 120 mA driving current. Moreover, under the illumination of high-power SWIR LED, covert information identification and night vision lighting have been realized, demonstrating a very bright prospect for practical applications.
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Nature Synthesis
·
2025
·
IF 20
Shi Siyi,Gong Chenxiang,Tao Minqin,Wang Cong,Fan Baojin,Yuan Hao,Hu Huawei,Niazi Muhammad Bilal Khan,Yan Xuzhou,Hu Xiaotian,Chen Yiwang
Flexible perovskite solar cells achieve efficient bendable energy conversion, enabling next-generation wearable devices. However, the transition from laboratory-scale prototypes to industrial-scale modules is impeded by the non-uniform deposition of perovskite colloidal particles during printing, resulting in diminished power conversion efficiency. Inspired by biological interlocking mechanisms, we synthesized mechanically interlocked networks embedded in perovskite precursor inks, to construct a three-dimensional network that immobilizes perovskite colloidal particles, suppressing aggregation during printing. The dynamic network enables uniform co-deposition of perovskite colloidal particles under shear-induced flow, yielding high-quality crystalline films with enhanced optoelectronic properties. Flexible perovskite solar cells fabricated using mechanically interlocked network-doped precursor ink exhibit superior performance, achieving record power conversion efficiencies of 26.22% for small devices (0.10 cm 2 ) and 19.44% for larger modules (100 cm 2 ), alongside substantial improvements in long-term operational stability and mechanical robustness.
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Advanced Composites and Hybrid Materials
·
2023
·Vol. 6
·期 3
·1-14
·
IF 20.1
Liu Chunlin,Jiang Le,Yue Ouyang,Feng Yufan,Zeng Boxiang,Wu Yixian,Wang Yifan,Wang Jingyun,Zhao Lingyun,Wang Xiumei,Shao Changyou,Wu Qiong,Sun Xiaodan
Conductive hydrogels always suffer from weak mechanical capabilities, low adhesion, and lack of antifreeze performance, which seriously restrict their application in flexible wearable devices at low temperatures. To address these problems, a thermal enhancement strategy was creatively proposed to prepare PEDOT:PSS-gelatin-based (CHGP) hydrogels, which achieved excellent mechanical properties (tensile strength ≈ 7.38 MPa and strain ≈ 150%), good adhesion properties (adhesion strength ≈ 27.8 kPa), and the lowest freezing point (− 51.7 ℃) compared to other reported gelatin-based hydrogels. It was demonstrated that the data monitored by the CHGP-based multimodal sensors at − 25 ℃ and 25 ℃ have high consistency, which proved the sensors’ stability in sensing and monitoring highly sensitive strain and humidity. Furthermore, assembled with VHB tape, a self-powered triboelectric nanogenerator (C-TENG) was designed as a low-temperature monitoring sensor, which can monitor not only body or environment temperature but also human movement without being affected by humidity. C-TENG has the ability to monitor the vital signs and mobility of users at low temperatures to ensure the safety of outdoor workers. Therefore, this study provides a useful strategy for preparing antifreeze hydrogel-based flexible wearable devices with low-temperature monitoring functions.
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Nature Chemistry
·
2024
·
IF 19.2
Zhang Yangyu,Peng Xuanbei,Tian Han-Rui,Yang Bo,Chen Zuo-Chang,Li Jiejie,Zhang Tianhua,Zhang Mingyuan,Liang Xiaocong,Yu Zhiyang,Zhou Yanliang,Zheng Lirong,Wang Xiuyun,Zheng Jian-Wei,Tang Yu,Au Chak-tong,Jiang Lilong,Xie Su-Yuan
Developing highly effective catalysts for ammonia (NH 3 ) synthesis is a challenging task. Even the current, prevalent iron-derived catalysts used for industrial NH 3 synthesis require harsh reaction conditions and involve massive energy consumption. Here we show that anchoring buckminsterfullerene (C 60 ) onto non-iron transition metals yields cluster-matrix co-catalysts that are highly efficient for NH 3 synthesis. Such co-catalysts feature separate catalytic active sites for hydrogen and nitrogen. The ‘electron buffer’ behaviour of C 60 balances the electron density at catalytic transition metal sites and enables the synergistic activation of nitrogen on transition metals in addition to the activation and migration of hydrogen on C 60 sites. As demonstrated in long-term, continuous runs, the C 60 -promoting transition metal co-catalysts exhibit higher NH 3 synthesis rates than catalysts without C 60 . With the involvement of C 60 , the rate-determining step in the cluster-matrix co-catalysis is found to be the hydrogenation of *NH 2 . C 60 incorporation exemplifies a practical approach for solving hydrogen poisoning on a wide variety of oxide-supported Ru catalysts.
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Nature Sustainability
·
2025
·
IF 27.1
Zhang Bo,Li Zhiguo,Han Daliang,Min Zhiwen,Cui Changjun,Wang Li,Li Qiang,Mao Xuejiao,Sun Yuanmiao,Weng Zhe,Yang Quan-Hong
The transition to clean energy necessitates the development of alternative or complementary battery chemistries to lithium-ion batteries. Aluminium (Al) metal batteries (AMBs) are a promising option owing to their high energy density and advantages in terms of abundance, recyclability, manufacturability and sustainability. However, state-of-the-art AMBs rely primarily on electrolytes featuring chloroaluminate anions such as Al 2 Cl 7 − . Unfortunately, such electrolytes create a disparity between achievable energy density and potential, in addition to having high corrosivity, high cost, high viscosity and poor transport kinetics. Here we break this paradigm by formulating an organochloro electrolyte with AlCl 3 salt in dipropyl ether (DPE) solvent. Notably, this AlCl 3 /DPE electrolyte shows no corrosion behaviour towards stainless steel current collectors during 90-day soaking. It enables stable cycling of the Al anode for over 2,000 h at 0.2 mA cm −2 and a high Coulombic efficiency of 99.85%, and prototype Al//Mo 6 S 8 full cells survive 300 cycles. Underlying these unprecedented performances is the unique organochloro solvation structure, AlCl 2 (DPE) 2 + , which is desolvatable and immobilizes free Cl − . By extending the horizon of electrolyte design into the organic domain, this work addresses the notorious issues facing AMBs and paves the way for the implementation of multivalent rechargeable batteries.
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Nature Sustainability
·
2025
·
IF 27.1
An Hanwen,Li Menglu,Liu Qingsong,Song Yajie,Deng Biao,Liu Xingjiang,Wang Jiajun
Solid-state sodium (Na) batteries open the opportunity for more sustainable energy storage due to their safety, low cost and high energy density. Inorganic solid electrolytes show notable advantages for such technologies but suffer from poor interfacial compatibility, rendering hybrid solid–liquid electrolytes an alternative. Here we show that the interfacial failure in the hybrid electrolyte system (Na 3 Zr 2 Si 2 PO 12 (NZSP) and 1 M NaClO 4 in propylene carbonate/ethylene carbonate/fluoroethylene carbonate) is closely associated with Na vacancies on the surface of NZSP. Asymmetric kinetics of solid and liquid electrolytes lead to the formation of Na vacancies and an unstable environment in the Helmholtz layer, while the organic molecules (propylene carbonate) are energetically favourable towards undesirable dehydrogenation. To eliminate the Na vacancies layer, we designed an ion-anchoring interlayer that serves to minimize the interfacial polarization. The unique O–Na coordination between the interfacial layer and NSZP confers stability to the solid–liquid interface. As demonstrated, the sodium battery with the modified hybrid electrolyte sustains 50,000 cycles with capacity retention of 86.3%. Our work provides a new path for the design of solid-state Na batteries, highlighting their potential for widespread practical applications.
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