RSC Advances
·
2024
·Vol. 14
·期 8
·5417-5424
·
IF 3.9
Jie Yi,Yajing Yang,Xi-ming Song,Yuxuan Zhang
Azobenzene-containing poly(aryl ether)s are a potential type of photoinduced deformable high-performance polymer. However, research on photoinduced deformation of azobenzene-containing poly(aryl ether)s focuses mainly on poly(aryl ether)s containing azobenzene groups in the main chain. In this paper, the photoinduced deformation of poly(aryl ether)s containing azobenzene groups in the side chain was studied for the first time. Two novel poly(aryl ether)s containing azobenzene groups in the side chain were synthesized, and their photoinduced isomerization behavior and photoinduced deformation behavior were studied. It could be seen that the match of the excitation luminescence to the maximum absorption peak of the azobenzene groups was more compatible, and the photoinduced motion of the polymers was faster. In addition, poly(aryl ether)s containing azobenzene groups in the side chain showed highly stable photoinduced deformation. The results of this work will be helpful for designing polymers which could be controlled by lasers of different wavelengths.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Zhisong Li,Linbo Wu
Poly(ethylene 2,5-furandicarboxylate) (PEF) is an important biobased polyester with better thermal, mechanical, and gas barrier properties than poly(ethylene terephthalate). In PEF synthesis, diethylene glycol furandicarboxylate (DF) is inevitably formed via etherification side reaction. Taking advantage of the side reaction, poly(ethylene-co-diethylene furandicarboxylate) (PEDF) poly(ether-ester)s were synthesized only from 2,5-furandicarboxylic acid (FDCA) and ethylene glycol (EG), using a cheap binary propanedisulfonic acid/dibutyltin oxide (PSA/DBTO) catalyst. The polymers were characterized by 1 H NMR, intrinsic viscosity, solubility, differential scanning calorimetry, thermogravimetric analysis, tensile, and gas barrier test. Due to strong acidity of PSA, not only major DF but also minor oligoethylene glycol furandicarboxylate ether-containing units were formed. Their total content can be adjusted up to 78 mol% by simply increasing the dosage of PSA from 0 to 0.4 wt%. The effect of ether-containing units on the solubility, thermal transition, mechanical, and oxygen barrier properties of the poly(ether-ester)s were examined and compared with the poly(ether-ester)s synthesized via copolycondensation.
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Advanced Energy Materials
·
2023
·Vol. 14
·期 10
·2303473
·
IF 27.8
Heyang Chen,Chenlu Shao,Shaoji Huang,Zhiqiang Gao,Haoran Huang,Zhenyu Pan,Kunpeng Zhao,Pengfei Qiu,Tian-Ran Wei,Xun Shi
The discovery of ductile Ag 2 (S, Se, Te) materials opens a new avenue toward high-performance flexible/hetero-shaped thermoelectrics. Specifically, the cubic-structured materials are quite attractive by combining remarkable plasticity, decent thermoelectric figure of merit ( zT ), and no phase transition above room temperature. However, such materials are quite few and the understanding is inadequate on their mechanical and thermoelectric properties. Enlightened by the high-entropy principles, a series of pseudo-ternary Ag 2 S-Ag 2 Se-Ag 2 Te alloys is designed and comprehensive diagrams of composition-structure-plasticity- zT are compiled. Subsequently, the compositional region for the cubic phase is outlined. As a high-entropy example featuring with anion-site alloying and disordered Ag ions, Ag 2- x S 1/3 Se 1/3 Te 1/3 materials exhibit impressively large elongations of 60–97%, ultralow lattice thermal conductivities of ≈0.2 W m −1 K −1 , and decent zT values of 0.45 at 300 K, 0.8 at 460 K. The materials can be readily rolled into thin foils, showing excellent flexibility. Finally, a six-leg in-plane device is fabricated, achieving an output voltage of 13.6 mV, a maximal power of 12.8 µW, and a power density of 14.3 W m −2 under the temperature difference of 30 K, much higher than the organic counterparts. This study largely enriches the members of cubic ductile inorganic materials for the applications in flexible and hetero-shaped energy and electronic devices.
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ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 31
·期 28
·2101476
·
IF 18.808
Yanlin Pan,Xiaobo Hu,Yixin Guo,Xingyu Pan,Fei Zhao,Guoen Weng,Jiahua Tao,Chunhu Zhao,Jinchun Jiang,Shaoqiang Chen,Pingxiong Yang,Junhao Chu
The vapor transport deposition of quasi-one-dimensional antimony selenosulfide (Sb 2 (S,Se) 3 ) has recently attracted increasing research interest for the inexpensive, high-throughput production of thin film photovoltaic devices. Further improvements in Sb 2 (S,Se) 3 solar cell performance urgently require the identification of processing strategies to control the orientation, however the growth mechanism of high quality absorbers is still not completely clear. Herein, a facile and general vapor transport deposition approach to precisely control the growth of large-grained dense Sb 2 (S,Se) 3 films with good crystallization and preferred orientation via the source vapor speed is utilized. It is found that defect activation energy rather than the defect concentration plays a decisive role in the Sb 2 (S,Se) 3 photovoltaic performance. Admittance spectroscopy analysis is used to obtain efficient Sb 2 (S,Se) 3 solar cells. By employing dual-source coordinations to optimize the absorber layer a power conversion efficiency of 8.17% is obtained which is the highest efficiency for Sb 2 (S,Se) 3 solar cells fabricated by vapor transport technology. This study suggests that there are other opportunities for gaining deeper a understanding of the defect physics and carrier recombination mechanisms in other highly oriented low-dimensional materials to achieve improved device performance.
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高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2025
·Vol. 26
·期 19
·9507
·
IF 4.9
Sen Zhao,Heliang Ni,Yuan Xiao,Jing Du,Yudong Han,Wenying Wang,Shuang Tang,Mingxi Yu
Accumulating evidence indicates that bisphenol A (BPA) analogs, including bisphenol B (BPB) and bisphenol S (BPS), disrupt testicular function and contribute to male reproductive dysfunction (MRD). However, whether BPA analogs are involved in MRD among middle-aged men remains inconclusive. Therefore, we selected cryptorchidism, erectile dysfunction, premature ejaculation, and testicular tumors as representative MRD conditions in middle-aged individuals, aiming to explore the molecular mechanisms that may be disrupted by bisphenols (BPs). By using GeneCards, STRING and Cytoscape, TP53, AKT1, and MYC were pinpointed as core targets associated with MRD. Enrichment analysis suggested that BPs may induce MRD by disrupting steroidogenesis. UPLC-MS/MS analysis showed that both BPB and BPS exhibit specific accumulation in the testes. Following 20-day exposure to 0.3 or 0.6 mg/kg body weight/day BPB or BPS, testosterone levels and the expression of hub genes were decreased. The molecular docking results demonstrated that both BPB and BPS can directly bind to members of the cytochrome P450 family, potentially interfering with sex hormone biosynthesis. Our study identified the targets and mechanisms through which BPB and BPS induce MRD in middle-aged males, thereby providing insights for the safety assessment of BPs.
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高影响因子
CRYSTAL GROWTH & DESIGN
·
2025
·
IF 3.4
Detao Li,Zichen Ning,Feiqiang He,Zhi Gao,Limin Zhou,Li Xu,Zhijian Zheng,Jerry Heng,Shichao Du,Jinbo Ouyang
To enable efficient separation of chiral drugs and enhance their practical utility, this study investigates cocrystallization as a novel separation and purification strategy. Using R/S-mandelic acid and d/l-prolinamide as model compounds, we screened potential cocrystal/salt coformers and successfully synthesized seven novel chiral salts. The proton transfer was elucidated by analyzing molecular electrostatic potential differences at the hydrogen-bonding sites. Moreover, the formation mechanism of salts was explored through structural analyses, such as Hirshfeld surface calculations, energy framework assessments, and crystal void analysis. Considering the distinct properties of various chiral salts, we conducted competitive cocrystallization experiments, establishing a complementary chiral pairing principle that provides a theoretical foundation for cocrystallization-based chiral resolution. Based on these findings, we developed multiple processes for the separation of R- and S-mandelic acid as well as l- and d-prolinamide, achieving product purities exceeding 80%, which strongly demonstrate the feasibility of cocrystallization separation technology for chiral resolution. This work not only introduces a groundbreaking approach to chiral separation but also highlights the vast potential of cocrystallization technology in pharmaceutical purification and beyond.
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Solar RRL
·
2018
·Vol. 2
·期 12
·1800233
·
IF 0
Qingwen Tian,Haiyang Lu,Yachao Du,Junjie Fu,Xiangyun Zhao,Sixin Wu,Shengzhong (Frank) Liu
Environment-friendly process, low production cost, and simple operation are regarded as key factors for scalable kesterite photovoltaic applications. Herein a green ammonium thioglycolate (TGAm)-based aqueous solution route has been developed to deposit Cu 2 ZnSnS 4 films. It is found that sinstering in ambient air is as good as in argon, making the production process more affordable and reproducible. TGAm is more active than other alkylthiols with longer alkyl chains and has a strong coordination capability toward metal ions, which is a key factor in the dissolution of a series of metal oxides. Meanwhile, TGAm is widely used in biopharmaceuticals and hairspray, demonstrating good biological compatibility. Moreover, a low level of Ag doping can be successfully incorporated into the host lattice of the CZTSSe to form a homogeneous (Cu 1−x ,Ag x ) 2 ZnSn(S,Se) 4 (CAZTSSe) alloy material by this aqueous process. Benefiting from the effect of Ag doping, the initial power conversion efficiency is successfully enhanced from 5.86% ( x = 0) to 7.38% ( x = 2%).
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ENERGY & FUELS
·
2020
·
IF 3.421
Mingjie Du,Xiaoqing Tian,Ran Ran,Wei Zhou,Kaiming Liao,Zongping Shao
The cycling performance of lithium–sulfur (Li–S) batteries, which is a major parameter determining the practical application of such an advanced high-energy-density battery system (1675 mA h g–1), is strongly affected by the properties of the cathodic sulfur hosts. As a desirable sulfur host, it should possess high surface area, good electronic conductivity, and superior physisorption and chemisorption to polysulfides. Here, by taking advantage of the magnesiothermic denitriding technology, the graphitic carbon nitride (GCN) with a tunable nitrogen content, surface area, and pore volume has been designed as a sulfur host for high-performance Li–S batteries. With a nitrogen content of ∼6%, a surface area of 594 m2 g–1, and a pore volume of about 2 cm3 g–1, the GCN-based host can retain sulfur and allow its reversible convention within cathodic region, thereby delivering a high capacity of 852.2 mA h g–1 at 0.5 C with a low capacity decay of 0.12% per cycle within 300 cycles. This work provides a feasible way to design nitrogen-doped carbon materials with tunable nitrogen content and enlightens the host material design for practical Li–S batteries.
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Small
·
2019
·Vol. 15
·期 46
·1903873
·
IF 10.856
Ya-Qian Wu,Hui-Xian Yang,Yu Yang,Hao Pu,Wen-Jie Meng,Rui-Ze Gao,Dong-Lin Zhao
SnS 2 has been widely studied as an anode material for sodium-ion batteries (SIBs) based on the high theoretical capacity and layered structure. Unfortunately, rapid capacity decay associated with volume variation during cycling limits practical application. Herein, SnS 2 /Co 3 S 4 hollow nanocubes anchored on S-doped graphene are synthesized for the first time via coprecipitation and hydrothermal methods. When applied as the anode for SIBs, the sample delivers a distinguished charge specific capacity of 1141.8 mAh g −1 and there is no significant capacity decay (0.1 A g −1 for 50 cycles). When the rate is increased to 0.5 A g −1 , it presents 845.7 mAh g −1 after cycling 100 times. Furthermore, the composite also exhibits an ultrafast sodium storage capability where 392.9 mAh g −1 can be obtained at 10 A g −1 and the charging time is less than 3 min. The outstanding electrochemical properties can be ascribed to the enhancement of conductivity for the addition of S-doped graphene and the existence of p–n junctions in the SnS 2 /Co 3 S 4 heterostructure. Moreover, the presence of mesopores between nanosheets can alleviate volume expansion during cycling as well as being beneficial for the migration of Na + .
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Advanced Science
·
2018
·Vol. 5
·期 7
·1800026
·
IF 12.441
Zeqing Guo,Huagui Nie,Zhi Yang,Wuxing Hua,Chunping Ruan,Dan Chan,Mengzhan Ge,Xi'an Chen,Shaoming Huang
Lithium–sulfur batteries suffer from poor cycling stability at high areal sulfur loadings (ASLs) mainly because of the infamous shuttle problem and the increasing diffusion distance for ions to diffuse along the vertical direction of the cathode plane. Here, a carbon nanotube (CNT)/graphene (Gra)-S-Al 3 Ni 2 cathode with 3D network structure is designed and prepared. The 3D network configuration and the Al in the Al 3 Ni 2 provide an efficient channel for fast electron and ion transfer in the three dimensions, especially along the vertical direction of the cathode. The introduction of Ni in the Al 3 Ni 2 is able to suppress the shuttle effect via accelerating reaction kinetics of lithium polysulfide species conversion reactions. The CNT/Gra-S-Al 3 Ni 2 cathode exhibits ultrahigh cycle-ability at 1 C over 800 cycles, with a capacity degradation rate of 0.055% per cycle. Additionally, having high ASLs of 3.3 mg cm −2 , the electrode delivers a high reversible areal capacity of 2.05 mA h cm −2 (622 mA h g −1 ) over 200 cycles at a higher current density of 2.76 mA cm −2 with high capacity retention of 85.9%. The outstanding discharge performance indicates that the design offers a promising avenue to develop long-life cycle and high-sulfur-loading Li–S batteries.
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高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Li Yang,Xiao Huang,Changfei Zou,Xiyuan Tao,Lei Liu,Kaili Luo,Peng Zeng,Qiushi Dai,Yongfang Li,Lingguang Yi,Zhigao Luo,Xianyou Wang
Lithium-sulfur (Li–S) batteries are attractive due to their high theoretical energy density . However, conventional Li–S batteries with liquid electrolytes undergo polysulfide shuttle-effect and lithium dendrite formation during charge/discharge process, leading to poor electrochemical performance and safety issues. Garnet type Li 7 La 3 Zr 2 O 12 (LLZO) solid-state electrolyte (SSE) restricts the penetration of polysulfides and exhibits high ionic conductivity at room temperature (RT). Herein, Li 6.5 La 3 Zr 1.5 Nb 0.5 O 12 (LLZNO) ceramic electrolyte using Li 3 PO 4 (LPO) as sintering aids (LLZNO-LPO) is prepared by the rapid sintering method and is applied to construct a shuttle-effect free solid-state Li–S battery . The SSE displays high conductive pure cubic-LLZO phase; during the rapid sintering, LPO melts and junctions the voids between the grains, thus improves Li + conductivity. As a result, the LLZNO-LPO ceramic electrolyte with Li + conductivity of 4.3 × 10 −4 S cm −1 and high critical current density (CCD) of 1.2 mA cm −2 is obtained at RT. The Li–S solid-state battery which utilizes LLZNO-LPO ceramic electrolyte can deliver an initial discharge capacity of 943 mA h·g −1 and 602 mA h·g −1 retention after 60 cycles. In the same time, the initial coulombic efficiency is as high as 99.5%, indicating that the SSE can effectively block the polysulfide shuttle towards the Li anode and fulfill a shuttle-free Li–S battery.
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高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Jing Zhang,Caiyin You,Weihua Zhang,Jian Wang,Shaohua Guo,Rong Yang,Yunhua Xu
Improving the reaction kinetics of cathode and preventing the dissolution of polysulfides are two of the key strategies of developing the high-performance lithium-sulfur (Li-S) batteries. Herein, we propose a multi-porous conductive architecture through bridging conductive TiN nanoparticle over the surface of CNT-S composite. The as-prepared TiN@CNT-S composite cathode delivers the superior initial specific capacity of 1269 mAh g −1 at 0.05C and as high as 586 mAh g −1 at 2C. The reversible capacity of the TiN@CNT-S composite cathode is about two times higher than the bare cathode without TiN conductive bridging at 1C over 400 cycles. A high areal capacity of 4.0 mAh cm −2 was realized for the TiN@CNT-S composite cathode with a high areal sulfur loading of 5.4 mg cm −2 at a current rate of 0.5C over 50 cycles. The enhancements in the electrochemical performances are mainly ascribed to the TiN bridged highly conductive structure; the formation of the strong chemical interaction of S-N-Ti bond for polysulfides trapping provided by the chemically polar TiN, which is verified by the ultraviolet visible (UV) spectra and X-ray photoelectron spectroscopy (XPS) analyses.
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