Small
·
2023
·Vol. 20
·期 19
·2308266
·
IF 13.3
Hao Wei,Changcheng Cui,Yimeng Li,Zucheng Wu,Yijin Wei,Yaliang Han,Lin Han,Boyang Lu,Xiao Wang,Shuping Pang,Zhipeng Shao,Guanglei Cui
Developing well-crystallized light-absorbing layers remains a formidable challenge in the progression of kesterite Cu 2 ZnSn(S,Se) 4 (CZTSSe) solar cells. A critical aspect of optimizing CZTSSe lies in accurately governing the high-temperature selenization reaction. This process is intricate and demanding, with underlying mechanisms requiring further comprehension. This study introduces a precursor microstructure-guided hetero-nucleation regulation strategy for high-quality CZTSSe absorbers and well-performing solar cells. The alcoholysis of 2-methoxyethanol (MOE) and the generation of high gas-producing micelles by adding hydrogen chloride (HCl) as a proton additive into the precursor solution are successfully suppressed. This tailored modification of solution components reduces the emission of volatiles during baking, yielding a compact and dense precursor microstructure. The reduced-roughness surface nurtures the formation of larger CZTSSe nuclei, accelerating the ensuing Ostwald ripening process. Ultimately, CZTSSe absorbers with enhanced crystallinity and diminished defects are fabricated, attaining an impressive 14.01% active-area power conversion efficiency. The findings elucidate the influence of precursor microstructure on the selenization reaction process, paving a route for fabricating high-quality kesterite CZTSSe films and high-efficiency solar cells.
研究领域:
材料科学
·
太阳能电池研究
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DOI
高影响因子
Chemistry-An Asian Journal
·
2016
·Vol. 11
·期 16
·2250-2254
·
IF 4.592
Jing Zhang,Yun-Yun Xi,Qing Li,Qing Tang,Ruibing Wang,Ying Huang,Zhu Tao,Sai-Feng Xue,Leonard F. Lindoy,Gang Wei
Binding interactions between twisted cucurbit[14]uril ( t Q[14]) and twenty standard amino acids (AAs) have been investigated by NMR spectroscopy and isothermal titration calorimetry (ITC) in aqueous HCl solutions and in DMSO. The results showed that t Q[14] displays clear binding affinity for AAs with a positively charged side chain or containing an aromatic ring, but weaker binding affinity for AAs with hydrophobic or polar side chains, with the binding mode depending on the type of side chain present in the AAs.
研究领域:
超分子化学
·
有机化学
·
物理化学
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DOI
高影响因子
Insects
·
2022
·Vol. 13
·期 11
·1056
·
IF 3.139
Nanxia Fu,Fida Hussain Magsi,Yingjie Zhao,Xiaoming Cai,Zhaoqun Li,Lei Bian,Chunli Xiu,Zongmao Chen,Zongxiu Luo
Simple SummaryThe tea tortrixArchips strojnyis a major pest of spring tea in China. Using sex pheromone-based mass trapping or mating disruption techniques to control this pest can minimize excessive pesticide usage, thereby maintaining pesticide residues within the safety standard for spring tea products. However, the sex pheromone components of this species remain elusive. In this study, we identified these components: laboratory assays showed that two bioactive compounds in female sex pheromone gland extracts, namely, (Z)-11-tetradecenyl acetate (Z11-14:Ac) and (Z)-11-tetradecenyl alcohol (Z11-14:OH), could elicit male moth antennal responses. A field trapping assay demonstrated that Z11-14:Ac was the attractant in the sex pheromone, while Z11-14:OH seemed to be an antagonist. Overall, our results indicated that lures baited with 1 mg of Z11-14:Ac could be used as a monitoring or mass trapping tool forA. strojnymanagement in Chinese tea plantations. Furthermore, Z11-14:Ac was found to be a common attractant in the sex pheromones of nine leafroller species in the genusArchips. Thus, Z11-14:Ac may be used to develop a mating disruption technique targeting multiple leafroller species.AbstractPesticide application is the only known control method for the tea tortrixArchips strojny(Lepidoptera: Tortricidae), which is a major pest of spring tea in China. To develop sex pheromone-based, environmentally safe control strategies, here we identified the sex pheromone components of this species. The male moths’ antennae responded electrophysiologically to two compounds in female pheromone gland extracts. Gas chromatography–mass spectrometry analysis indicated that the two bioactive compounds were (Z)-11-tetradecenyl acetate (Z11-14:Ac) and (Z)-11-tetradecenyl alcohol (Z11-14:OH). Field trapping assays showed that lures baited with only the major component Z11-14:Ac were the most attractive to male moths, and the attractiveness decreased significantly when the lure was impregnated with increased relative ratios of the minor component Z11-14:OH. Our study demonstrated that Z11-14:Ac was the major attractant in theA. strojnysex pheromone, and the minor component Z11-14:OH seemed to serve as an antagonist. The results indicate that lures baited with 1 mg of Z11-14:Ac could be used as a monitoring or mass trapping tool forA. strojnymanagement in Chinese tea plantations. Furthermore, Z11-14:Ac was identified as a common sex pheromone attractant of nineArchipsspecies; these results lay the foundation for developing mating disruption techniques that target multiple leafroller pests.Keywords:female sex pheromone;Archips strojny;(Z)-11-tetradecenyl acetate;male attraction;tea pest
研究领域:
昆虫学
·
农业科学
·
化学生态学
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DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 31
·20218-20226
·
IF 4.036
Lieqiang Liao,Ruidong Liu,Shuwen Hu,Wenting Jiang,Yali Chen,Jinlian Zhong,Xinjian Jia,Huijin Liu,Xuzhong Luo
In this paper, we report self-assembled sonogels formed from 1,4-naphthalenedicarbonyldinicotinic acid hydrazide (NDC-NN3) in some liquids including ethanol, tetrahydrofuran (THF), 1,4-dioxane, n-propanol, n-butanol and n-pentanol. When the clear solution of NDC-NN3 in the selected liquids mentioned above at a suitable concentration was irradiated with ultrasound waves at room temperature, a sonogel was formed. Upon heating, the sonogel dissolved gradually and finally became a clear solution again. Upon cooling the hot solution to room temperature, the solution state did not change even after standing for a few days. Nevertheless, if the solution underwent sonication for a certain time, a stable gel was obtained again. The critical gelation concentrations (CGCs) of NDC-NN3 in ethanol, THF, 1,4-dioxane, n-propanol, n-butanol and n-pentanol are 10, 8, 6, 8, 6 and 8 mg mL−1, respectively. The obtained sonogels display excellent mechanical properties. The crystal structure of NDC-NN3 suggests that the naphthalene ring, hydrazide group and the position of N in the pyridine ring mediate the self-assembly process. Upon sonication, the formation of suitable π–π stacking and intermolecular hydrogen bonding drives the gelator molecules to self-assemble into fibers, spheres and micro-burdock-shaped balls in various solvents, which ultimately confine the liquids.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Xueshuai Wang,Chengxian Cao,Sha Li,Liuchun Zheng
Poly(ethylene terephthalate- co -1,4-cyclohexanedimethylene terephthalate) (PETG) is a versatile engineering plastic with excellent properties and has been widely used in heat-shrinkable films, sheets, and packaging. A series of PETG with various contents of 1,4-cyclohexanedimethylene (CHDM) content was synthesized by transesterification and polycondensation. The PETG synthesized in this work has less DEG by-product content and exhibits excellent combined properties. This is attributed to the fact that the transesterification process leads to the formation of methoxy terminal groups (–OCH 3 ) in PETG, which exhibit higher stability compared to hydroxyl terminal groups (–OH). In addition, the properties of PETG can be controlled at the macromolecular structure level by simply regulating the content of CHDM. The chemical structure, thermal properties, mechanical performance, rheological properties, and heat shrinkage performance of PETG were systematically studied. The results demonstrated that CHDM content significantly influenced crystallization behavior, glass transition temperature ( T g ), thermal stability, and rheological properties. This work offers a theoretical foundation for advancing high-performance PETG and proposes novel synthesis strategies for applications. The results of this research support the promotion of the wide application of PETG materials in the packaging, medical, electronics, and automotive industries, especially in environmental protection and sustainable development, providing new development directions and solutions for the industry.
研究领域:
材料科学
·
高分子化学
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产品关联
DOI
高影响因子
Toxins
·
2021
·Vol. 13
·期 5
·343
·
IF 4.546
Xudong Luo,Li Ding,Xiangdong Ye,Wen Zhu,Kaiyue Zhang,Fangyan Li,Huiwen Jiang,Zhiwen Zhao,Zongyun Chen
Scorpion venoms are rich resources of antimicrobial peptides (AMPs). While the short-chain noncysteine-containing AMPs have attracted much attention as templates for drug development, the antimicrobial potential of long-chain noncysteine-containing AMPs has been largely overlooked. Here, by using the online HeliQuest server, we designed and analyzed a series of 14-residue fragments of Smp43, a 43-residue long-chain noncysteine-containing AMP identified from the venom ofScorpio maurus palmatus. We found that Smp43(1-14) shows high antimicrobial activity against both Gram-positive and Gram-negative bacteria and is nontoxic to mammalian cells at the antimicrobial dosage. Sequence alignments showed that the designed Smp43(1-14) displays a unique primary structure that is different from other natural short-chain noncysteine-containing AMPs from scorpions, such as Uy17, Uy192 and IsCT. Moreover, the peptide Smp43(1-14) caused concentration-dependent fluorescence increases in the bacteria for all of the tested dyes, propidium iodide, SYTOXTMGreen and DiSC3-5, suggesting that the peptide may kill the bacteria through the formation of pore structures in the plasma membrane. Taken together, our work sheds light on a new avenue for the design of novel short-chain noncysteine-containing AMPs and provides a good peptide template with a unique sequence for the development of novel drugs for use against bacterial infectious diseases.Keywords:scorpion venom;noncysteine-containing AMPs;Smp43;Smp43(1-14);antimicrobial resistance;HeliQuestKey Contribution:Smp43(1-14), a short fragmented peptide of Smp43, was designed as a novel antimicrobial peptide with a unique sequence and potent antimicrobial activity.
研究领域:
生物化学
·
药理学
·
微生物学
✓ 已验证
DOI
PubMed
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2017
·Vol. 23
·期 42
·10092-10099
·
IF 5.317
Jing Zhang,Qing Tang,Zhong-Zheng Gao,Sheng-Chao Qiu,Ying Huang,Zhu Tao
Graphical Uniquely responsive : The interaction of thiazole orange (TO) with twisted cucurbit[14]uril ( t Q[14]) was investigated, and formation of a stable fluorescent t Q[14]/TO complex was observed. The t Q[14]/TO complex exhibited unique fluorescence responses to Hg 2+ , Ba 2+ , and Pb 2+ cations in different aqueous media (see figure). Thus, a fluorescent sensor for three heavy-metal ions was developed. A water-soluble fluorescent sensor based on the interaction of twisted cucurbit[14]uril ( t Q[14]) and thiazole orange (TO) in aqueous solution was developed. Formation of the t Q[14]/TO complex gives rise to stronger fluorescence in both neutral and acidic aqueous solutions compared with that of free TO. Further experiments on the interaction of the t Q[14]/TO complex with metal ions revealed that, from a series of nineteen selected common metal ions, 1) only Hg 2+ can lead to fluorescence enhancement and then quenching of the t Q[14]/TO (2:1) complex in neutral aqueous solution; 2) only Ba 2+ can induce fluorescence quenching of the t Q[14]/TO (2:1) complex in aqueous HCl solution (pH 2); furthermore, the t Q[14]/TO/Ba 2+ systems exhibit reversible changes in fluorescent intensity on successively adding SO 4 2− and Ba 2+ ; and 3) only Ba 2+ or Pb 2+ can induce fluorescence quenching of the t Q[14]/TO (15:1) complex in aqueous HCl solution (pH 2). Thus, the t Q[14]/TO complex can act as a supramolecular fluorescence-based sensor for the determination of Hg 2+ , Ba 2+ , and Pb 2+ ions.
研究领域:
化学
·
分析化学
·
超分子化学
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DOI
PubMed
高影响因子
Science Advances
·
2023
·Vol. 9
·期 1
·
IF 13.6
Zipeng Yu,Jinxin Ma,Mengyue Zhang,Xiaoxuan Li,Yi Sun,Mengxin Zhang,Zhaojun Ding
Auxin and brassinosteroids (BRs) are two major growth-promoting phytohormones that shape hypocotyl elongation; however, the cross-talk between auxin and BR in this process is not fully understood. In this study, we found that auxin-induced hypocotyl elongation is dependent on brassinazole-resistant 1 (BZR1), a core BR signaling component. Auxin promotes BZR1 nuclear accumulation in hypocotyl cells, a process dependent on mitogen-activated protein kinase 3 (MPK3) and MPK6, which are both activated by auxin and whose encoding genes are highly expressed in hypocotyls. We determined that MPK3/MPK6 phosphorylate and reduce the protein stability of general regulatory factor 4 (GRF4), a member of the 14-3-3 family of proteins that retain BZR1 in the cytoplasm. In summary, this study reveals the molecular mechanism by which auxin promotes hypocotyl elongation by enhancing BZR1 nuclear accumulation via MPK3/MPK6-regulated GRF4 protein stability.
研究领域:
植物生物学
·
分子生物学
·
激素信号
✓ 已验证
DOI
PubMed
高影响因子
NATURE
·
2023
·Vol. 623
·期 7989
·972-976
·
IF 64.8
Sun Luye,Zheng Wei,Gao Wenze,Kang Faming,Zhao Mali,Xu Wei
All-carbon materials based on sp 2 -hybridized atoms, such as fullerenes 1 , carbon nanotubes 2 and graphene 3 , have been much explored due to their remarkable physicochemical properties and potential for applications. Another unusual all-carbon allotrope family are the cyclo[ n ]carbons (C n ) consisting of two-coordinated sp -hybridized atoms. They have been studied in the gas phase since the twentieth century 4 , 5 , 6 , but their high reactivity has meant that condensed-phase synthesis and real-space characterization have been challenging, leaving their exact molecular structure open to debate 7 , 8 , 9 , 10 , 11 . Only in 2019 was an isolated C 18 generated on a surface and its polyynic structure revealed by bond-resolved atomic force microscopy 12 , 13 , followed by a recent report 14 on C 16 . The C 18 work trigged theoretical studies clarifying the structure of cyclo[ n ]carbons up to C 100 (refs. 15 , 16 , 17 , 18 , 19 , 20 ), although the synthesis and characterization of smaller C n allotropes remains difficult. Here we modify the earlier on-surface synthesis approach to produce cyclo[10]carbon (C 10 ) and cyclo[14]carbon (C 14 ) via tip-induced dehalogenation and retro-Bergman ring opening of fully chlorinated naphthalene (C 10 Cl 8 ) and anthracene (C 14 Cl 10 ) molecules, respectively. We use atomic force microscopy imaging and theoretical calculations to show that, in contrast to C 18 and C 16 , C 10 and C 14 have a cumulenic and cumulene-like structure, respectively. Our results demonstrate an alternative strategy to generate cyclocarbons on the surface, providing an avenue for characterizing annular carbon allotropes for structure and stability.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ORGANOMETALLICS
·
2023
·
IF 2.8
Wenyu Shi,Xuyang Yan,Xiaoyu Wang,Xiuling Wang,Xiaochao Shi
A series of enamino-oxazolinate rare-earth metal complexes were successfully synthesized and structurally characterized. The alkyl elimination of enamino-oxazolinate proligands [R1 = H, R2 = CF3 (L1-H); R1 = Me, R2 = CF3 (L2-H); R1 = iPr, R2 = CF3 (L3-H); R1 = iPr, R2 = Ph (L4-H)] with an equimolar amount of Ln(CH2SiMe3)3(THF)2 (Ln = Y, Lu, Sc) smoothly afforded the desired rare-earth metal complexes [L(1–4)-Ln(CH2SiMe3)2](THF). Upon activation by a borate, all of these complexes, especially 1-Y, exhibited high catalytic activities for the living polymerization of 1,3-dienes (isoprene, β-myrcene, and β-farnesene) to afford highly cis-1,4-regular polymers (up to 99.6% for polyisoprene, 99.6% for polymyrcene, and 99.9% for polyfarnesene). Noteworthily, the presence of the polar −CF3 group in the ligands had a positive effect on the rare-earth metal complexes to realize satisfactory catalytic performance.
研究领域:
化学
·
材料科学
✓ 已验证
DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Yueyue Zhang,Hua Zhao,Yifei Gong,Haiyang Shen,Wei Chen,Xianbiao Wei,Congliang Cheng,Ping Li
Anion exchange membranes were prepared by a simple method on the basis of polyvinyl alcohol (PVA) and 1,4-Piperazinedicarboxaldehyde (PDC). A network structure was formed in the membranes by cross-linking between PVA and PDC. The mechanical stability and acid stability the prepared membranes was tested. The TS value was tested as 17.5–37.8 MPa, E b was 120.4–54.7% and the mass retention in the acid environment was 98.4–97.2%. Meanwhile, the physicochemical properties of membranes, such as thermogravimetric analysis (TGA), water absorption (W R ), ion exchange capacity (IEC) and linear expansion rate (LER). W R was 106.9–136.7%, IEC was 1.03–1.55 mmol/g, and LER was 37.93–33.33%. In practical application, diffusion dialysis (DD) performance of membranes were tested. In DD test, the acid dialysis coefficient (U H + ) was 17.5–27.9 × 10 −3 m/h, and the separation factor (S) was 31.25–23.38. The U H + and S were all higher than commercial membrane DF-120 (U H + is 9 × 10 −3 m/h and S is 18.00). Results were shown that the comprehensive properties of membranes were good. Therefore, the prepared membranes had broad application prospects for acid recovery by diffusion dialysis.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Biomaterials Research
·
2024
·
IF 8.1
Jingwei Bi,Limin Zhang,Pengfei Zhang,Shulei Xu,Yuhao Liu,Xiaolai Zhang,Xiaoyong Qiu,Yanwen Bi,Fangfang Yan,Hui Wei,Xin Cui,Xin Pan,Jun Huang,Yunpeng Zhao
Osteoarthritis (OA) is a common age-related degenerative disease characterized by changes in the local tissue environment as inflammation progresses. Inspired by the wind-dispersal mechanism of dandelion seeds, this study develops responsive biomimetic microsphere-drug conjugate for OA therapy and protection. The conjugate integrates dibenzaldehyde polyethylene glycol (DFPEG) with chitosan and polyethylene glycol diacrylate (PEGDA) through dynamic covalent bonds to form a dual-network hydrogel microsphere. Based on the progression of OA, the conjugate with the surface-anchored cyclic peptide cortistatin-14 (CST-14) achieves targeted drug therapy and a self-regulating hydrogel network. In cases of progressing inflammation (pH < 5), CST-14 dissociates from the microsphere surface (viz. the drug release rate increased) and inhibits TNF-α signaling to suppress OA. Concurrently, the monomer DFPEG responsively detaches from the hydrogel network and scavenges reactive oxygen species (ROS) to protect the cartilage tissue. The ROS scavenging of DFPEG is comparable to that of coenzyme Q10 and vitamin C. The degraded PEGDA microspheres provide tissue lubrication through reused conjugates. The rat OA model successfully achieved a synergistic therapeutic effect greater than the additive effect (1 + 1 > 2). This strategy offers an approach for anchoring amine-containing drugs and has marked potential for OA treatment and protection.
研究领域:
生物医学工程
·
药学
·
组织工程
·
骨科
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）