PHOTOCHEMISTRY AND PHOTOBIOLOGY
·
2012
·Vol. 88
·期 4
·840-843
·
IF 2.413
Zhan Zhou,Qianming Wang,Jintai Lin,Yanna Chen,Chuqin Yang
Herein, a novel fluorescent indicator for the real-time monitoring of amines is described. This probe contains a complex of europium-(thenoyltrifluoroacetone) 3 (Eu(TTA) 3 ) that efficiently reacts with primary and secondary amines. The electron-withdrawing trifluoroacetyl undergoes a nucleophilic addition with amines, and the complex was used to selectively detect BuNH 2 and Et 2 NH (quenching concentration for BuNH 2 : 10 −4 m , for Et 2 NH: 1.2 × 10 −3 m ) by monitoring emission; no changes were observed in the emission spectrum of Eu(TTA) 3 in the presence of Et 3 N, [Bu 4 N]Cl, or PhNH 2 in aqueous solution (THF/H 2 O = 1:1). The ratio of emission intensity to amine concentration was linear by the least-squares fitting method.
研究领域:
分析化学
·
生物传感
·
分子探针
·
稀土化学
·
有机合成
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DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 85
·69388-69393
·
IF 3.84
Qin Zhou,Shurong Fu,Min Zou,Yiming He,Ying Wu,Tinghua Wu
A magnetic MoO3/Fe3O4 catalyst was prepared and used in the oxidative desulfurization (ODS) of dibenzothiophene (DBT), benzothiophene, and thiophene. The morphology and components of the magnetic composite material were characterized by X-ray diffraction, scanning electron microscopy and X-ray photoelectron spectroscopy techniques. Results indicated that MoO3 as an active species was supported on Fe3O4. High calcination temperature leads to the formation of Fe2(MoO4)3 compounds which showed lower activity than MoO3. The highest conversion of 99.5% for ODS of DBT can be achieved on MoO3/Fe3O4 calcinated at 400 °C. In addition, the amount of MoO3/Fe3O4, TBHP/DBT molar ratio and reaction temperature played vital roles in desulfurization efficiency. This work showed the possibility for the utilization of low cost magnetic MoO3/Fe3O4 composite in the oxidative desulfurization because it shows high activity and could be easily separated by applying an external magnetic field, achieving ten times recycling without significant decrease in activity.
研究领域:
催化化学
·
环境化学
·
能源化工
·
材料化学
·
石油炼制
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DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2017
·
IF 2.299
Xiu-Li Wang,Xiao-Mei Wu,Guo-Cheng Liu,Qiao-Min Li,Hong-Yan Lin,Xiang Wang
By tuning metal ions and combining with different dicarboxylates , four new semi-rigid thiophene-bis-pyridyl-bis-amide-based coordination polymers , namely, [Zn(3-bptpa)(1,3-BDC)]·DMA·2H 2 O ( 1 ), [Zn(3-bptpa)(5-MIP)] ( 2 ), [Cd(3-bptpa)(1,3-BDC)]·2H 2 O ( 3 ) and [Cd(3-bptpa)(5-MIP)]·4H 2 O ( 4 ) (3-bptpa= N,N′ -bis(pyridine-3-yl)thiophene-2,5-dicarboxamide, 1,3-H 2 BDC=1,3-benzenedicarboxylic acid, 5-H 2 MIP=5-methylisophthalic acid, DMA= N,N -dimethylacetamide), were solvothermally/hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction analyses, IR spectra , UV–vis diffuse-reflectance spectra (DRS), powder X-ray diffraction (PXRD) and thermal gravimetric analyses (TG). The structural analysis reveals that Zn-complexes 1 and 2 are similar 2D networks. While Cd-complexes 3 and 4 exhibit similar 2-fold interpenetrating 3D α -Po frameworks with the (4 12 ·6 3 ) topology. The photocatalytic properties for the degradation of methylene blue (MB) under ultraviolet light irradiation of the title complexes have been investigated in detail. Furthermore, the luminescent sensing behaviors for metal cations of 1–4 have been studied, the results indicate that 3 is an excellent fluorescent probe , with high sensitivity, selectivity , and simple regeneration, for environmentally relevant Fe 3+ ions.
研究领域:
无机化学
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材料化学
·
配位化学
·
环境分析
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光催化
·
荧光传感
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DOI
高影响因子
MACROMOLECULAR RAPID COMMUNICATIONS
·
2018
·Vol. 39
·期 11
·1800048
·
IF 4.441
Shuang Pan,Mingjing Zhu,Luze He,Hongdong Zhang,Feng Qiu,Zhiqun Lin,Juan Peng
An intriguing morphological transition from poly(3-hexylthiophene) (P3HT) 1D nanofibers to 2D nanoribbons enabled by the addition of a series of alkylthiols is reported. First, P3HT 1D nanofibers are formed due to strong anisotropic π–π stacking between planar rigid backbones. Upon the addition of alkylthiols, P3HT nanofibers are transformed into nanoribbons associated with the crystallographic transition from edge-on orientation to flat-on orientation. The content of alkylthiols has a great influence on the P3HT morphology in the solution. The mechanism of such a morphological transformation is discussed based on the interaction between alkylthiols and P3HT chains. This work offers an effective strategy to tailor the crystal morphology and dimension of P3HT, which not only improves the understanding of P3HT crystallization but also may enable such discovery into conjugated polymer-based optoelectronic devices.
研究领域:
高分子化学
·
材料科学
·
凝聚态物理
·
纳米科技
·
有机电子学
✓ 已验证
DOI
高影响因子
DYES AND PIGMENTS
·
2016
·
IF 4.055
Qing Bao,Hua Li,Yang Li,Jinghui He,Qingfeng Xu,Najun Li,Dongyun Chen,Lihua Wang,Jianmei Lu
In this paper, two acceptor-donor-acceptor (A-D-A) type organic small molecules, 4,4'-(5,5'-(benzo[c] [1,2,5]thiadiazole-4,7-diyl)bis(3-hexylthiophene-5,2-diyl))bis(N-(4-nitrophenyl)-N-phenylaniline) (NTPA 2 TBT) and 4,4'-(5,6-difluorobenzo[c] [1,2,5]thiadiazole-4,7-diyl)bis(N-(4-nitrophenyl)-N-phenylaniline) (NTPA 2 BTF 2 ), were synthesized and fabricated into resistive random access memory devices. Compared with our previously reported molecule NTPA 2 BT, NTPA 2 TBT has 3-hexylthiophene linkages bridging its donor and acceptor, while there are two additional fluorine atoms in the benzothiadiazole moiety for NTPA 2 BTF 2. Both the fabricated memory devices based on these two new molecules perform nonvolatile ternary memory characteristics with lower threshold voltages , higher reproducibility and better stability. The addition of 3-hexylthiophene bridges significantly promotes the planarity of the conjugation backbone and facilitates the molecular stacking, while the substitution hydrogen by fluorine improves the intermolecular interaction , and thus also induces an ordered molecular stacking. The insertion of 3-hexylthiophene bridges or fluorine atoms could be an effective strategy of tailoring organic molecules to improve data storage performance with lower power consumption.
研究领域:
材料科学
·
有机电子学
·
分子器件
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非易失性存储器
·
高分子化学
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DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 27
·20741-20746
·
IF 3.84
Ge Sheng,Guiyun Xu,Shenghao Xu,Shiying Wang,Xiliang Luo
A conducting polymer based composite material of poly(3,4-ethylenedioxythiophene) (PEDOT) doped with pure insoluble ionic liquid (IL), 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, was prepared through a cost-effective electrodeposition method. A very tiny amount of insoluble IL (less than 15 μL), containing 0.1 M conducting polymer monomer, was drop-coated on an electrode surface and then used for electropolymerization using a homemade electrochemical cell filled with aqueous supporting electrolyte. With this design, the consumption of expensive IL for the preparation of the PEDOT/IL composite was greatly reduced, and thus effectively reduced the cost. The prepared PEDOT/IL composite was found to be highly conductive and stable, and it exhibited a highly nanoporous microstructure and excellent electrocatalytic activity toward the oxidation of dopamine (DA). Based on the excellent stability and electrocatalytic activity of the PEDOT/IL nanocomposite, a highly stable, sensitive and selective DA sensor with a detection limit of about 51 nM was developed.
研究领域:
分析化学
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生物传感器
·
纳米材料
·
电化学
·
神经化学
·
转化医学
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DOI
高影响因子
MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2020
·Vol. 221
·期 14
·2000144
·
IF 2.335
Guangfa Shi,Xiaomin Cai,Wenqiang Wang,Gengchao Wang
Polymeric positive temperature coefficient (PTC) materials can be used to install “brake” technology for the thermal runaway of lithium-ion batteries. However, it still has poor cycle stability and obvious negative temperature coefficient (NTC) effect, which reduces the reliability of the material. In order to solve these problems, conductive polymer poly(3,4-ethylenedioxythiophene) (PEDOT) modified multilayer graphene (MLG) conductive additive (PEDOT-MLG) is introduced into middle density polyethylene/carbon black (MDPE/CB) system. Compared with the conventional modification, the PEDOT modified MLG shows high conductivity and excellent thermal stability. In addition, the introduction of PEDOT-MLG into MDPE/CB can further reduce the room temperature resistivity due to the good compatibility between the modified graphene and the matrix, thus improving the PTC intensity to 7.1. What is more, MLG limits the re-aggregation of CB particles when the temperature further rises, which effectively weakens the NTC effect.
研究领域:
高分子材料科学
·
功能材料
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能源材料
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纳米复合材料
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电学性能
·
锂离子电池安全
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2015
·Vol. 27
·期 4
·3549-3556
·
IF 1.569
Wang Lu,Yang Zhouyong,Ni Xiuyuan
We prepare the mesoporous polythiophene–WO 3 film through in situ polymerization which is initiated by WO 3 , and fabricate the electrochromic device with the composite film. The influences of the electrolyte ions, film morphologies and counter electrode on the electrochromism of the devices are explored by UV–Vis transmittance spectra and cyclic voltammetry tests. With the aim to enhance the contrast optical transmittance, we develop the binary composite electrolytes of LiClO 4 and N(C 4 H 9 ) 4 ClO 4 solution which can promote intercalation/deintercalation process. Besides that, we use polyethylene oxide as pore-forming agent on the polythiophene–WO 3 films, so that it will be easier for electrolyte ions to diffuse in the porous film. A NiO layer also has a complementary effect on the cathodic coloration films and increases the contrast optical transmittance remarkably. Equipped with the binary electrolyte and the NiO layer as the counter electrode, the film device exhibits high performance with the contrast optical transmittance (ΔT) of 62 % and the coloration efficiency of 212.6 cm 2 /C.
研究领域:
材料科学
·
电化学
·
功能材料
·
纳米材料
·
能源材料
·
表面科学
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DOI
高影响因子
Small Methods
·
2021
·Vol. 5
·期 9
·2100544
·
IF 14.188
James Kumankuma-Sarpong,Wei Guo,Yongzhu Fu
The development of metal ion-intercalated active materials for excellent electrochemical performance in rechargeable aqueous zinc-ion batteries (AZIBs) is challenging. The structure instability and intrinsic electrostatic repulsion of the lattice framework cause structural breakdown and low-rate performance. In response to these problems, yttrium vanadium oxide–poly(3,4-ethylenedioxythiophene) (PEDOT@YVO) composite is reported as stable cathode material for AZIBs. The introduction of PEDOT in YVO nanorods improves the crystalline structure with an enlarged interplanar lattice spacing of 3.4 Å. The PEDOT@YVO composite electrode demonstrates effective electric conductivity and a higher initial specific capacity of 308.5 mAh g −1 than that (125.5 mAh g −1 ) of the pure YVO at 0.2 C rate. It also features a long-term stable discharge–charge cycle performance of 4000 cycles with a capacity retention of 79.2% at 1C rate, better than YVO (29.4 mAh g −1 ). The oxygen vacancies and improved electrical conductivity of the composite account for the invigorated electrochemical performance. Consequently, this work reveals another avenue for constructing unique electrodes to enhance the electrochemical properties of AZIBs.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
功能材料
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DOI
高影响因子
SYNTHETIC METALS
·
2013
·
IF 2.109
Lu Xiao,Jun Yuan,Yingping Zou,Bo Liu,Jinzhi Jiang,Yan Wang,Lihui Jiang,Yong fang Li
A new donor–acceptor conjugated polymer (PBDTPO-FBT), which consists of a fluorinated benzothiadiazole (FBT) electron-acceptor unit and an electron-donor segment of alkoxylphenyl substituted benzo[1,2-b:4,5-b′]dithiophene (BDTPO), was synthesized according to the Stille cross-coupling reaction. The resulting copolymer was characterized by TGA , GPC , UV–vis absorption spectroscopy and cyclic voltammetry measurements. PBDTPO-FBT possesses good thermal stability with 5% weight loss temperature of 410 °C and shows broad absorption at 300–800 nm with an optical bandgap of 1.53 eV. Cyclic voltammetry measurement exhibits HOMO and LUMO energy levels of −5.43 eV and −3.72 eV, respectively. The hole mobility of PBDTPO-FBT:PC 71 BM (1:1, w/w) reaches up to 3.8 × 10 −3 cm 2 /V/s by the space-charge-limited current (SCLC) method. By using 3% 1,8-diiodooctane (DIO) as the solvent additive, the polymer solar cell with the configuration of ITO/PEDOT:PSS/PBDTPO-FBT:PC 71 BM (1:1, w/w)/Ca/Al demonstrates a power conversion efficiency of 2.70% with V oc = 0.70 V, J sc = 7.23 mA/cm 2 and FF = 47.08%, under the illumination of AM 1.5 G, 100 mW/cm 2 .
研究领域:
高分子化学
·
材料科学
·
有机电子学
·
太阳能电池
·
光电转换
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DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2026
·
IF 6.8
Jie Song,Youming Chang,Yu Zhang,Lijun Chen,Lei Li,Yidan Li
Aiming at the problems of limited conductivity and poor stability of traditional ionic hydrogels, this study prepared polythiophene composite (PTh@Fe-BDA) as a conductive filler, and then designed poly(vinyl alcohol) (PVA) network, sodium poly(acrylic acid) (PAANa), and poly([2-(methacryloyloxy)ethyl]trimethylammonium chloride) (PDMC) polyelectrolyte network to construct dual network (DN) gels by introducing conductive fillers into the polymer matrix. When PTh@Fe-BDA was added in the amount of 0.9 g, the tensile strength of the conductive hydrogel was 0.825 MPa, the toughness was 0.0039 MJ/m 3 , and the electrical conductivity was 1155.556 mS/m. The hydrogel exhibited good adhesion and recovery after cycling tests. PVA/PAANa/PDMC/PTh@Fe-BDA conductive hydrogel strain sensing can respond to mechanical stimuli and generate accurate, stable and recoverable electrical signals, and can be used as a flexible wearable device for multiple monitoring strains and subtle movements in different body parts, and can also be used as a capacitive pen to fluently write and draw on the screen of a cell phone or tablet computer. This new multifunctional conductive hydrogel has a wide range of application prospects in electronic skin, motion monitoring and human–computer interaction.
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产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Yuhang Zhang,Wencai Huang,Xi Chen,Zirui Ren,Yuqing Song,Xiandong He,Yang Xia,Xiaoxiao Lu
NCM811 cathode is surface modified by PTh and CNTs. • PTh/CNTs co-modification boosts electrochemistry and thermal stability. • The co-modified sample achieves 86.8% capacity retention after 500 cycles at 1C. • Conjugated electron-rich PTh captures ROS; CNTs build conductive network. The practical use of Ni-rich cathodes is limited by interfacial instability from reactive oxygen species, poor conductivity, and structural degradation. Polythiophene (PTh) is capable of scavenging reactive oxygen species (ROS); however, its electrical conductivity is insufficient to meet the demands of high-rate applications. To enhance the high-rate performance, a hybrid modification layer composed of PTh and carbon nanotubes (CNTs) has been introduced onto LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) via a straightforward wet-chemical method. Morphological and surface investigations confirm that PTh uniformly coats the cathode surface, while CNTs are entangled on the surface of the secondary particles to form a robust conductive network. Electrochemical results demonstrate that PTh effectively shields the cathode from electrolyte degradation, suppresses lattice contraction after prolonged cycling, and scavenges ROS, whereas CNTs significantly enhance electrical conductivity. The optimized CP-NCM811 cathode delivers an initial discharge capacity of 184.5 mAh g −1 at 1C and retains 86.8% of its capacity after 500 cycles. Furthermore, it displays an outstanding rate performance of 161.6 mAh g −1 at 10C. The enhanced electrochemical and thermal stability arises from the synergistic effects of ROS scavenging by PTh, suppression of irreversible lattice contraction, and reduction of charge-transfer impedance facilitated by the CNT conductive network. Differential scanning calorimetry further reveals that the modified cathode exhibits a delayed exothermic onset temperature, indicating superior thermal stability. This study offers a novel and efficient strategy for enhancing the electrochemical and thermal performances of high-capacity cathodes through the synergistic co-modification of PTh and CNTs. Download: Download high-res image (186KB) Download: Download full-size image
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）