Applied Chemistry for Engineering
·
2025
·Vol. 36
·期 1
·36-42
·
IF 0.6
Gyu Won Woo,Eun Kwang Lee
본 연구에서는 스크린 인쇄 기술을 활용하여 유연 기판인 polyimide (PI) 필름에 내부 이온 게이트 유기 전기 화학 트랜지스터(internal gated transistor, IGT)를 제작하였다. 기존의 복잡한 공정 없이 저비용으로 제작하였으며, 유기 전기 화학 트랜지스터(OECT)의 채널로 주로 사용되는 전도성 고분자인 poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate) (PEDOT:PSS)와 D-소르비톨을 혼합하여 외부 전해질 없이 채널 내에서 자체적으로 이온 (de)doping 메커니즘을 구현하였다. 그 결과, 스크린 인쇄 IGT는 기존 OECT 대비 향상된 전도성과 성능 지표를 나타냈다. D-소르비톨 첨가 후 PEDOT:PSS의 시트 저항 값이 기존 대비 약 1/2로 감소하여 전도성이 향상되었고, 표면 결정성 또한 개선되었다. 전기적 성능 평가에서 IGT는 OECT 대비 출력 곡선 특성(VGS = 1.6 V)에서 약 4배 증가한 것으로 나타났으며, ION/IOFF 비율은 약 4.3배 높았다. 이동도 계산 결과 OECT는 0.6987 F V-1 s-1 cm-1, IGT는 0.9578 F V-1 s-1 cm-1로 IGT가 높은 값을 보였고, 시간 응답 속도 상수 τ는 τOECT = 0.50 s, τIGT = 0.34 s로 더 빠른 응답 속도를 나타내었다.
The device fabricated in this study was an internal ion-gated organic electrochemical transistors (IGTs) using screen printing technology on a flexible polyimide (PI) film substrate. This fabrication method is a cost-effective and simple method without existing deposition techniques or complicated processes. The conductive polymer, poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate) (PEDOT:PSS), commonly used as a channel material in organic electrochemical transistors (OECTs), was blended with D-sorbitol to enable a self-ion (de)doping mechanism within the channel, eliminating the requirement for an external electrolyte. The screen-printed IGT exhibited enhanced conductivity and performance compared to conventional OECTs. Analysis of the physical and chemical properties of PEDOT:PSS with D-sorbitol revealed a significant reduction in sheet resistance. The surface analysis further confirmed an enhancement in crystallinity. Electrical performance evaluation involved a comparative study with conventional OECTs. The IGT device demonstrated a 4 times increase in output curve characteristics at VGS = 1.6 V compared to OECTs. Additionally, the ION/IOFF ratio was 4.3 times higher for the IGT. Calculations of µC* to assess device mobility indicated a notable improvement, with values of 0.9578 F V-1 s-1 cm-1 for IGT compared to 0.6987 F V-1 s-1 cm-1 for OECTs. In time constant analysis, τOECT = 0.50 s and τIGT = 0.34 s indicate that IGTs have a faster response time.
研究领域:
材料科学
·
电子工程
·
化学工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Pengfei Shan,Yingwen Lu,Weilin Lu,Xiangping Yin,Haiwei Liu,Daai Li,Xiaoyue Lian,Weiping Wang,Zhongyu Li,Zhihui Li
The low utilization efficiency of pesticides exerts an adverse impact on the environment and human health. Polymer-related controlled-release nanosized pesticide systems provide a promising and efficient way to overcome the problem. In this work, a biodegradable and light-responsive amphiphilic polymer was synthesized via 1,1,3,3-tetramethylguanidine-promoted polyesterification under mild conditions (low temperature, no vacuum, and no inert gas protection). We used this polymer to fabricate a light-triggered controlled-release nanosized pesticide system. The herbicide, 2,4-dichlorophenoxyacetic acid (2,4-D), was selected as a model drug to show its potential as a controlled-release pesticide system. It was found that the 2,4-D-loaded polymeric nanoparticles were stable without the treatment of UV, while the release rate of 2,4-D from the nanoparticles gradually increased after treatment with UV light. Pot trial showed that the 2,4-D-loaded polymer nanoparticles showed a good herbicidal effect. Finally, toxicity studies suggested that the polymer can reduce toxicity to nontarget organisms.
研究领域:
环境科学
·
材料科学
·
农业科学
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Lingguang Yi,Xiaoyi Chen,Jiajia Huang,Jiali Liu,Honghui Hu,Huahui Zhao,Tianjing Wu,Li Liu,Xianyou Wang
The sodium superionic conductor structure (NASICON) Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) is a promising active filler for its high ionic conductivity and air stability. Nonetheless, its large-scale application remains limited by chemical instability with lithium anodes. Herein, a novel poly(vinylidene fluoride- co -hexafluoropropylene) (PVDF-HFP)-based composite polymer electrolyte (CPE), designated as PPALx-D, is synthesized via a blade-casting method. This CPE comprises a conductive poly(poly(ethylene gly co l) methyl ether methacrylate-co-(lithium 2-acrylamido-2-methylpropanesulfonic acid)) (P(PEGMEMA-co-AMPSLi)) matrix, inorganic LATP filler, and an in-situ polymerized 1,3-dioxolane (DOL) artificial interlayer. The physicochemical and electrochemical properties of the as-prepared CPEs are systematically characterized. Results show that the PPAL5-D CPE, despite being thinner and containing less liquid electrolyte, provides faster organic-inorganic Li + transport channels and exhibits superior electrochemical compatibility with Li metal anodes. The PPAL5-D CPE achieves a high room-temperature (RT) ionic conductivity of 3.47× 10 −4 S cm −1 and a high Li + transference number of 0.61. The assembled LFP|PPAL5-D|Li battery demonstrates significantly improved cycling stability, delivering a discharge capacity of 131.5 mAh g −1 at 1C for 400 cycles at RT. This study proposes a feasible methodology for preparing organic-inorganic composite electrolytes, advancing the development of quasi-solid-state Li metal batteries (LMBs).
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Chem
·
2024
·
IF 19.1
Long Chen,Haikuo Zhang,Ruhong Li,Shuoqing Zhang,Tao Zhou,Baochen Ma,Chunnan Zhu,Xuezhang Xiao,Tao Deng,Lixin Chen,Xiulin Fan
The electric double layer (EDL) plays a pivotal role in the interfacial reactions that occur within lithium batteries. However, theoretical models beyond the empirical Guy-Chapman-Stern (GCS) model to understand reaction mechanisms and tuning principles are lacking. Herein, we introduce a quantitative parameter of region d within the EDL, which successfully elucidates the correlation between the EDL functional domain and the oxidation resistance of electrolytes. The reduced spatial scale of d results in a rapid decay of interface potential to the bulk level, effectively suppressing the continuous decomposition of the electrolyte. By precisely modulating the functional area represented by d, the designed 1.5 M LiFSI in a (3,3,3-Trifluoropropyl) trimethoxysilane (TFTMS) electrolyte exhibits remarkably high oxidation stability of >5.5 V and enables simultaneous stabilization of Li metal, graphite, and high-voltage layered cathodes. The EDL model incorporated with quantitative functional area d offers a promising path to guide the advancement of high-energy Li batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Foods
·
2025
·Vol. 14
·期 11
·1873
·
IF 5.1
Zhou Chen,Yuhan Yan,Ziang Wu,Yanyin Song,Jiangqi Xu
As global milk production continues to rise, the disposal of expired milk contributes to environmental pollution and valuable resource wastage. This study presents the development of a novel L-arabinose isomerase, designatedBmAIase12, and its application in the enzymatic recycling of expired milk.BmAIase12 exhibited a specific activity of 10.7 U/mg and showed optimal performance at 50 °C and pH 7.0. Furthermore, it exhibited higher activity than most other L-arabinose isomerases. It converted D-galactose into D-tagatose with a high conversion ratio of 53.3% after 48 h at 50 °C. The conversion efficiency of expired milk to D-tagatose was recorded at 40.62%, resulting in a maximum tagatose yield of 1.625 g/L. This was accomplished through the incorporation of β-galactosidase (120 U/mL) andSaccharomyces cerevisiae(30 mg/mL) to hydrolyze lactose and metabolize glucose, followed by the addition of 3 U/mL ofBmAIase12. Ultimately, following purification, the purity of tagatose was determined to be 98%, and the final yield was 29.8%. These results suggest thatBmAIase12 may serve as a promising enzyme for D-tagatose production due to its high conversion yield.
研究领域:
生物化学
·
环境科学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Solar RRL
·
2025
·
IF 4.7
Xinyu Zhao,Songlin Lu,Keyu Cui,Ye Zhang,Jing Luo,Chunbo Liu,Huaqiao Tan
The exciton binding energy ( E b ) is recognized as a pivotal parameter governing charge separation in polymeric photocatalysts. Reducing E b in polymers enhances carrier generation, thereby boosting photocatalytic activity. Rationally constructing donor–acceptor (D–A) architectures in heptazine-based polymers offers an effective strategy to overcome intrinsic excitonic limitations. In this work, CN x ( x = 0.015, 0.025, 0.05) materials with intramolecular D–A configurations were developed by integrating electron-donating units with heptazine acceptor motifs. The optimized material CN 0.025 exhibits a 29% reduction in E b (97 → 69 meV) and extended visible-light absorption, attributable to enhanced π-conjugation and modulated electronic structures. Remarkably, under visible-light irradiation, CN 0.025 achieves 97.7% degradation of 2,4-dichlorophenol (10 ppm) within 50 min. Moreover, CN x exhibits a 29.8-fold higher CO yield than pure g-C 3 N 4 in photocatalytic CO 2 reduction. Electrochemical photocurrent measurements reveal a remarkable enhancement in the photocurrent response of CN 0.025 relative to g-C 3 N 4 , which suggests more efficient exciton dissociation and increased carrier availability at the catalytic surface for subsequent redox reactions. This work establishes a paradigm for exciton dissociation in polymeric photocatalysts through engineered D–A nanoarchitectures.
研究领域:
材料科学
·
光催化
·
聚合物化学
·
环境修复
·
能量转换
✓ 已验证
产品关联
DOI
高影响因子
BIOLOGICAL & PHARMACEUTICAL BULLETIN
·
2025
·Vol. 48
·期 12
·1897-1905
·
IF 1.7
Xiaojun Zhang,Fang Wang,Yuna Dai,Zhaoyu Gao,Jianchao He
Platycodon grandiflorum (P. grandiflorum), a traditional Chinese herbal medicine, possesses various biological activities. Among its constituents, polygalacin D (PGD) stands out as one of the principal compounds. This study determined the regulatory effect of PGD on breast cancer progression. Breast cancer cells MCF-7 and BT474 were treated with different concentrations of PGD. Colony formation assays, the detection of Ki67 expression, and cell cycle analysis were performed to verify the effect of PGD on the proliferation of breast cancer cells. Terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) staining, flow cytometry, and examination of caspase-3 activity were conducted to assess the changes in apoptosis following PGD treatment. In addition, the co-treatment of PGD and cisplatin (DDP) on cells was performed to explore the effect of PGD on the chemosensitivity of DDP. Furthermore, bioinformation analysis suggested that histone deacetylase 1 (HDAC1) and HDAC2 were the downstream factors of PGD, and the effect of PGD on their expression was assessed. PGD inhibited breast cancer cell proliferation, as evidenced by reduced colony formation, downregulation of Ki67 expression, and induction of cell cycle arrest. Additionally, PGD treatment significantly increased caspase-3 activity and elevated the rate of cell apoptosis and TUNEL-positive cells. Furthermore, PGD was found to enhance the chemosensitivity to DDP. Mechanistically, PGD reduced the expression of HDAC1 and HDAC2 by promoting their protein degradation. Cell proliferation induced by HDAC1 or HDAC2 was also overcome by PGD. In conclusion, PGD was confirmed as an effective tumor inhibitor that suppressed the development of breast cancer by regulating HDAC1 and HDAC2.
研究领域:
肿瘤学
·
分子生物学
·
药理学
·
天然产物化学
·
表观遗传学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS CHEMISTRY
·
2011
·Vol. 21
·期 44
·17972-17977
·
IF 5.101
Pengtao Shao,Hongzhi Wang,Qinghong Zhang,Yaogang Li
Mn-doped ZnSe nanocrystals (Mn:ZnSe d-dots) that emit white light were synthesized in aqueous media in microfluidic reactors. White light emission from Mn:ZnSe d-dots was a result of combined emission of blue light (emission from non-coordinated surface selenium sites) and yellow light (4T1 → 6A1 emission from Mn2+ ions). Emission from non-coordinated surface selenium sites was realized by adjusting the ratio of the flow volumes of [Zn]/[Mn] and the mass of stabilizer added. Photoluminescence from the Mn:ZnSe d-dots was easily tuned from 580 to 602 nm by regulating flow volume. Under the optimal experimental conditions, Mn:ZnSe d-dots that emit white light with a quantum yield of about 10.2% were fabricated.
研究领域:
材料科学
·
纳米技术
·
光学
✓ 已验证
DOI
高影响因子
Journal of Macromolecular Science Part B-Physics
·
2017
·
IF 0.828
Shan Bai,Zhenzhong Ouyang
Direct graft copolymerization of maleic anhydride (MAH) onto poly(D,L-lactide-co-glycolide) (PLGA) was performed by use of benzoyl peroxide (BPO) as initiator. Fourier transform infrared spectra, nuclear magnetic resonance, titration analysis of maleation extent and water contact angle were employed to characterize the obtained MPLGA. The effects of monomer concentration, initiator concentration and reaction temperature on the degree of maleation were investigated. The MPLGA scaffold was obtained by using NaCl as the porogen. The results showed that maleic anhydride was successfully grafted onto the PLGA chains. The monomer and initiator concentrations played an important role in the graft copolymerization; the extent of maleation first increased with increasing content of MAH and BPO and then declined. The extent of maleation continuously increased with increasing temperature to 100°C, and then the rate of increase decreased. The extent of maleation could be controlled in the range from 0.15 to 0.71% by adjusting the graft copolymerization conditions. The introduction of anhydride enhanced the water contact angle of PLGA. The MPLGA scaffold showed a network of interconnected pores ranging from 50 to 300 μm.
研究领域:
高分子化学
·
生物材料科学
·
高分子改性
·
组织工程
✓ 已验证
DOI
高影响因子
JOURNAL OF COORDINATION CHEMISTRY
·
2012
·
IF 1.547
Li Zhang,Xiu-Ling Wu,An-Qi Wang,Fei Qin,Da-Wei Meng,Xiao-Yang Liu
A manganese(II) coordination polymer [Mn(TMB)2 · H2O]
n
(1) (HTMB = 3,4,5-trimethoxybenzoic acid) has been synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction, elemental analysis, powder X-ray diffraction analysis, spectroscopic (IR, solid state UV-Vis), and thermal methods. The crystal belongs to orthorhombic system, space group P212121, with cell parameters a = 7.3001(8), b = 11.4146(13), c = 27.053(3) Å, α = β = γ = 90°, V = 2254.3(4) Å3, Z = 4. In 1, TMB in two different coordination modes bridges six-coordinate manganese(II) centers forming a 1-D infinite chain coordination framework. The spectral and thermal properties of the complexes have also been studied.
研究领域:
无机化学
·
配位化学
·
材料科学
·
晶体工程
✓ 已验证
DOI
高影响因子
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES
·
2024
·Vol. 28
·期 03
·166-172
·
IF 0.9
Min Cui,Sijie Zhu,Mengmeng Xiong,Huijie Zuo,Xiang Li,Kai Wang,Jun Jiang
As a non-invasive cancer therapy method, photodynamic therapy (PDT) shows tremendous promise in clinical cancer treatment. Light-activated singlet oxygen production of photosensitizers (PSs) is the prerequisite for cancer PDT, and the use of organic photosensitizers is always limited by visible light-based activation, hydrophilicity, biocompatibility, selectivity and quantum yield of singlet oxygen. Currently, both zinc porphyrin- and BODIPY-based structures have been widely used in the development of PDT PSs. Here, we developed a novel naphthalimide bridged zinc porphyrin/BODIPY molecule ( Por-BDP-1 ) with two poly(ethylene glycol) (PEG) chains, in which D-A structure was constructed between the naphthalimide group and porphyrin group. After self-assembly into nanoparticles, Por-BDP-1 NPs (Diameter: 122.4 nm) could quench fluorescence in 600–700 nm, bind with calf thymus-DNA, and produce singlet oxygen during light-irradiation (laser: 680 nm, 1.0 W/cm 2 ) . In addition, Por-BDP-1 NPs effectively killed HeLa cells with a IC 5 0 value = 44.8 μg/mL and showed a lower dark toxicity under the same conditions. All our results demonstrated that our naphthalimide bridged zinc porphyrin/BODIPY nano-photosensitizer is a promising nanoagent for PDT in the clinic.
研究领域:
材料科学
·
纳米医学
·
光动力治疗
·
有机化学
·
生物医学工程
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2013
·Vol. 1
·期 30
·4556-4564
·
IF 0
Liang Pan,Benlin Hu,Xiaojian Zhu,Xinxin Chen,Jie Shang,Hongwei Tan,Wuhong Xue,Yuejin Zhu,Gang Liu,Run-Wei Li
Two donor–acceptor (D–A) polyazothines (PAs), incorporating the oxadiazole entity either acting as an electron acceptor (A) to form D–A structured PA-1 with the triphenylamine donor (D), or acting as a donor to form D–A structured PA-2 with the 3,3′-dinitro-diphenylsulfone acceptor, have been successfully synthesized via a polycondensation reaction. The variation in the role of the oxadiazole moiety in the D–A polymers, together with the use of different top electrode metals, leads to interesting electronic transport properties and various resistive switching behaviors of the present polyazothines. Pt-electrode devices based on a PA-1 active layer show a rewritable memory effect with poor endurance (less than 20 cycles), whereas the PA-2 based Pt devices exhibit write-once read-many-times (WORM) memory behavior. For the Al-electrode devices, both PAs demonstrate a much improved resistive switching effect, and the endurance of the PA-2 devices is better than that of the PA-1 devices. The difference in the electronic transport and memory properties of the four devices may originate from the different charge injection/extraction and electron transfer processes of the sandwich systems, and will provide guidelines for selecting both the proper D and A moieties in D–A polymers and electrode metals for high-performance resistance random access memories (RRAMs).
研究领域:
材料科学
·
有机电子学
·
高分子化学
·
电气工程
✓ 已验证
DOI
危险品化学品经营许可证（带存储）