JOURNAL OF MOLECULAR STRUCTURE
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2017
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IF 1.753
Guanfan Chen,Mengzhuo Tang,Xiufang Fu,Fenmin Cheng,Xianghua Zou,Jingpei Wang,Rongjin Zeng
Sulfide anions are not only generated as a byproduct from industrial processes but also as a crucial kind of element in biological systems. Therefore, fluorescent probes for detecting sulfide anion with sensitive and selective characters are highly popular. In this study, we report a highly sensitive and selective fluorescent sensor M1 for detection of sulfide anion based on the steric hindrance effect, where the recognition unit, dinitrobenzenesulfonate ester group is linked to aromatic ortho -position in the porphyrin , and correspondingly the fluorescence of fluorescein is efficiently quenched. Compared with the sensors with recognition unit linked to the other aromatic positions, the fluorescent sensor M1 has a lower fluorescence background. Furthermore, the corresponding fluorescence responses ( F/F0 ) of M1 for mercapto amino-acid GSH, Hcy and Cys, were all far lower than the relative fluorescence ratio F/F0 values for S 2− . It means that M1 is sensitive and selective to detection of S 2− , and has an anti-disturbance ability to the biologically-relevant thiols, GSH, Hcy and Cys, and has the prospect of application in the exact detection of sulfide anions in living organisms. This approach offers some useful insights for realizing sensitive and selective fluorescent turn-on sensing in the detection assays for other analytes.
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CHEMICAL ENGINEERING JOURNAL
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2017
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IF 6.216
Long Chen,Lina Chen,Qing Ai,Deping Li,Pengchao Si,Jinkui Feng,Lin Zhang,Yanhui Li,Jun Lou,Lijie Ci
A freestanding, binder-free carbon nanofibers@polypyrrole@reduced graphene oxide (CNFs@PPy@rGO) core-double-shell supercapacitor electrode is prepared by carbonization of electrospun PAN nanofibers network follow by the electrochemical deposition of PPy and then reduced graphene oxide layer coating. The flexible all-solid-state supercapacitor based on the CNFs@PPy@rGO core-double-shell electrode with PVA/H 3 PO 4 gel electrolyte demonstrates a highest specific capacitance of 188 F/g at the scan rate of 2 mV/s and good cycling stability. Due to the synergistic effect of three materials, the newly designed composite electrode shows the highest specific capacitance of 336.2 F/g at the scan rate of 2 mV/s, which increases by 10% than that of CNFs@PPy electrode (302.7 F/g) at the same scan rate in a three-electrode system. Furthermore, it shows excellent cycling stability performance with 98% capacitance retention after 2500 cycles, which is better than that of CNFs@PPy electrode (90%).
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高影响因子
MATERIALS CHEMISTRY AND PHYSICS
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2017
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IF 2.084
Zhenyun Zhao,Jing Zhou,Tao Fan,Lanqian Li,Zulan Liu,Yiping Liu,Ming Lu
A simple and effective surface modification of polyester (PET) fabrics with H 2 SO 4 (sulfuric acid) to improve the interfacial deposition of polypyrrole (PPy) on PET fabrics was presented in our work. Effects of H 2 SO 4 concentration on hydrophilicity of PET fabrics were analyzed by water contact angle measurements. Effects of H 2 SO 4 modification on deposition of PPy were investigated by electrical resistivity and color depth of fabrics measurements. Besides, the adhesion of PPy on PET fabrics was also discussed. The PPy-deposited PET fabrics were determined by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). FTIR and XPS results showed that sulfonic acid groups appeared on PET fibers after modification which were contributed to improving deposition of PPy on PET fabrics. The improved deposition increased electrical conductivity of fabrics.
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EUROPEAN POLYMER JOURNAL
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2017
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IF 3.531
Jinze Wang,Lin Liu,Liping Ying,Li Chen
Due to the molecular complexity of many diseases, combination therapy is becoming increasingly important for a better long-term prognosis and to decrease side effects. In this presented work, a kind of AB 2 Y-shape supramolecular micelles based on the metal-coordinated interaction between histidine and iron-tetraphenylporphyrins (Fe-TPP) had been successfully prepared which exhibited excellent acid-responsivity in acidic aqueous solution (pH < 6, similar to tumor micro-environment). To verify the application for drug delivery, doxorubicin was loaded at neutral. Then the anticancer efficiency was evaluated in vivo towards HeLa and MCF-7 cells. The obtained date indicated that the loaded drug released at tumor acid condition because the micelles disassembled. Importantly, the existence of Fe-TPP being as photosensitizer obviously improved the anticancer efficiency, confirming that synergistic chemo-photodynamic therapy could effectively enhance cellular proliferation inhibition.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2017
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IF 3.012
Ni Hui,Jiasheng Wang
Honeycomb-like cobalt nanostructures modified graphene oxide doped polypyrrole (CoNSs/RGO/PPy) nanocomposites were successfully prepared via a simple two-step electrochemical synthesis route. Firstly graphene oxide (GO) doped PPy nanocomposite was electrodeposited onto a pretreated glassy carbon electrode (GCE) to obtain GO/PPy nanocomposite; secondly honeycomb-like cobalt nanostructures were electrochemical reduced onto GO/PPy nanocomposite surface in a cobalt chloride solution at − 1.0 V. During the second reduction process, GO/PPy was reduced to a more conductive RGO/PPy nanocomposite simultaneously. The electrode modified with CoNSs/RGO/PPy nanocomposites exhibited outstanding electrocatalytic performance for enzymeless glucose sensing in alkaline media. Under optimum experimental conditions, the nonenzymatic glucose sensor displayed linear ranges from 0.5 μM to 2.667 mM, a high sensitivity of 297.73 μA mM − 1 cm − 2 , a very low detection limit of 29 nM (at S/N = 3) and a superfast response time of 1 s. The developed glucose sensor displayed favorable selectivity against common interferents, excellent stability and high reproducibility, and it has great potential to successfully detect glucose concentration in real biological samples.
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Journal of Materials Chemistry B
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2017
·Vol. 5
·期 9
·1772-1778
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IF 4.543
Xiangjun Chen,Manjie Zhang,Shengnan Li,Lu Li,Lingyu Zhang,Tingting Wang,Min Yu,Zhongcheng Mou,Chungang Wang
In our work, we report a facile approach to fabricate well-dispersed polypyrrole@metal–organic framework (PPy@MOF) core–shell nanocomposites (NCs) with a polypyrrole (PPy) core and an MIL-100(Fe) shell. The adsorbed Fe(III) ions on the as-fabricated PPy surface were utilized as reactive sites for further growth of the MIL-100(Fe) in the presence of trimesic acid (H3btc). The resulting NCs exhibited strong absorption in the near infrared (NIR) region and possessed an excellent photothermal efficiency of ∼40% resulting from the PPy core. The MOF structure based on Fe(III) carboxylate materials held great ability for storage/delivery of the hydrophilic anti-cancer drug, doxorubicin (DOX). The released DOX continuously increased due to the damage of the shell at low pH values. When the DOX-loaded PPy@MIL-100(Fe) NCs were exposed to NIR irradiation, owing to the heat produced by the NCs, the local temperature increased, resulting in a faster release of DOX from the MIL-100(Fe) shell. Furthermore, PPy@MIL-100(Fe) NCs were successfully employed for dual-mode magnetic resonance imaging (MRI)/photoacoustic imaging (PAI) and synergistic chemo-photothermal therapy of cancer cells. Therefore, our work could encourage further study in the construction of a multifunctional platform using different MOF nanomaterials for cancer theranostics.
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PubMed
高影响因子
CERAMICS INTERNATIONAL
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2024
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IF 5.1
Mengjia Song,Liwen Yan,Yifan Li,Junpeng Jiang,Zihan Gong,Anran Guo,Haiyan Du,Jiachen Liu
Integration of thermal insulation and electromagnetic wave absorption was crucial in stealth technology and hypersonic vehicles but challenging. Herein, silicon carbide nanofibers were synthesized by in situ chemical vapor deposition within a carbon foam skeleton to form a wave absorbing and heat insulating integrated composite aerogel with a hierarchical porous structure. The unique hierarchical porous structure provided an excellent platform for the absorption of electromagnetic waves, achieving a minimum reflection loss (RL min ) of −51.46 dB at 17.20 GHz. Meanwhile, the C/SiC nanofiber aerogel maintained a low density of 0.013 g/cm 3 , an ultra-low thermal conductivity of 0.030 W/(m⋅K) and a high thermal stability up to 1000 °C. Furthermore, to enhance the electromagnetic wave (EMW) absorption property of the aerogel, polypyrrole (PPy) was coated on the surface of C/SiC nanofiber aerogel by facile impregnation and chemical polymerization. The multiple conductor-semiconductor-conductor structure of C/SiC-PPy composite aerogel leads to various EMW loss mechanisms and excellent impedance match, resulting in an outstanding EMW absorption performance, with a RL min of −60.31 dB at 2.96 GHz.
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JOURNAL OF CATALYSIS
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2025
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IF 6.5
Shan Wu,Jian Shi,Qian Duan,Ludan Shang,Xiaodong Zhang,Yuhan Duan
Porphyrins and phthalocyanines are considered as visible light catalysts with great development potential due to their unique π-conjugated structure, strong visible light absorption and structural tunability. However, they are easy to aggregate and difficult to dissolve, and their application in the field of photocatalysis is limited. Based on the above problems, in this study, three four-arms star-shaped thermosensitive copolymers (PcZn-(PNIPAM n -co-PUMPP m ) 4 ) photocatalysts with zinc phthalocyanine as the core and porphyrin thermosensitive copolymer as the arms was constructed by using RAFT polymerization technology and the ’core first’ route. The visible light catalytic activity of the prepared star-shaped copolymers was evaluated by using 1,5-dihydroxynaphthalene (DHN) and methylene blue (MB) as model pollutants. The three copolymers were found to be effective in oxidizing DHN to juglone and degrading MB. Among them, PcZn-(PNIPAM 33.5 -co-PUMPP 1.6 ) 4 (P3) showed the highest DHN conversion efficiency (100.0 %), reaction yield (70.0 %) and MB degradation (96.9 %). 1 O 2 and O 2 · - are the main active substances in the visible photocatalytic process. Based on UV–vis absorption spectra, Fluorescence spectra, EIS Nyquist plots and transient photocurrents, it is confirmed that P3 has a wider range of visible light absorption, and there is effective energy and electron transfer between TTPcZn and UMPP units in P3, which makes it have higher catalytic activity. More importantly, the lower critical solution temperature (32.6 ∼ 32.9 °C) of P3 makes it possible to achieve homogeneous catalysis and heterogeneous recovery through simple temperature regulation in the catalytic process, which makes P3 have good reusability. This work paves a way for the construction of high-performance and recyclable visible polymer photocatalyst.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Lingke Liu,Yueqin Li,Zichun Lu,Ruantian Miao,Ning Zhang
The development of soft hydrogel actuators with outstanding mechanical properties, fast actuation speed, and available quantification of self-sensing actuation remains a challenging endeavor. In this work, dopamine-decorated polypyrrole nanofibers (DAPPy) were introduced into the polyethylene glycol diacrylate (PEGDA)-crosslinked poly(N-isopropyl acrylamide) network to generate a stretchable, NIR-responsive, and strain sensitive DAPPy/PNIPAM hydrogel layer. Besides, this active layer was combined with the passive ligninsulfonate sodium/polyacrylamide (LS/PAAM) to give DAPPy/PNIPAM//LS/PAAM bilayer hydrogel actuator, which exhibits ultrafast thermo-responsive actuation (19°/s) and underwater grasping and lifting performance. Moreover, the DAPPy/PNIPAM layer has excellent electrical conductivity (0.29 S/m) and thermal conversion ability (10.8 °C/min), which enable such a conductive hydrogel to act as a highly sensitive strain and temperature sensor with real-time resistance change in response to tensile strain (gauge factor up to 3.4), applied pressure, temperature, and remote NIR light irradiation. More importantly, the bilayer hydrogel actuator can integrate both actuation and self-sensing functions through the bending angle-surface temperature-relative resistance change relationship of the photothermal process. With excellent mechanical actuation and self-sensing ability, the resulting bilayer hydrogel showed a promising application potential as soft biomimetic actuating materials and soft intelligent actuators.
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JOURNAL OF HAZARDOUS MATERIALS
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2025
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IF 11.3
Kaixiang Ji,Peilin Wang,Yameng Li,Qiang Ma,Xingguang Su
Phthalate esters, particularly di(2-ethylhexyl) phthalate (DEHP), are widely used plasticizers found in various consumer products, posing significant environmental and health risks due to their endocrine-disrupting effects. In this study, a novel enzyme-free intra-capacitive biofuel cell self-powered sensor (ICBFC-SPS) was developed. The ICBFC-SPS integrated a ternary heterostructure-based capacitive anode and a cathode with a sensing interface into a single-chamber electrolytic cell. The ternary heterostructure based on Ti 3 C 2 T x MXene with ultra-small Au NPs and polypyrrole (PPy) NPs was prepared to provide the efficient glucose oxidation and robust electron production. Furthermore, the charge storage capacity was significantly enhanced through a synergistic combination of the double-layer capacitor mechanism of Ti 3 C 2 T x and the pseudocapacitive behavior of PPy. Additionally, the intercalation of PPy NPs expanded the interlayer spacing, promoting electrolyte ion diffusion and charge transfer. The ICBFC-SPS demonstrated exceptional sensitivity with a linear detection range from 0.05 to 100000 ng/L and a detection limit of 9.51 pg/L for the sensitive and selective detection of DEHP in complex environmental and biological samples. The ICBFC-SPS addresses the limitations of traditional methods by providing a self-powered, highly sensitive, and portable platform for rapid, on-site DEHP detection. This work underscores the potential of self-powered sensors as transformative tools for real-time environmental monitoring and public health protection.
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NEW JOURNAL OF CHEMISTRY
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2024
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IF 2.7
Ling Li,Jing Ma,Yuan Cui,Chong Liu,Hao Li,Dayang Xie,Tinghong Wang,Yanwei Li,Yanhui Li
Antibiotic resistance induced by antibiotic abuse is considered as one of the most serious public health problems. Antibacterial photodynamic therapy (APDT) using an efficient photosensitizer has been gaining increasing attention in recent years owing to its high efficacy and lack of drug resistance. Herein, we reported a photosensitizer system composed of tetra-aminophenyl porphyrin (TAPP) loaded in a guanidinium-based ionic covalent framework (COFTGTp) via π–π interactions to form TAPP/COFTGTp. The aim was to use it for APDT, which will not only solve the problems with TAPP as a photosensitizer, wherein it easily aggregates in aqueous solution and is ineffective against Gram-negative bacteria, but can combine the antibacterial activity of the cationic COFTGTp with the APDT induced by TAPP to achieve optimal antibacterial effects on both Gram-positive and Gram-negative bacteria. After TAPP loading in COFTGTp, the stability of TAPP/COFTGTp in aqueous solution was enhanced compared with TAPP, and the drug-loading efficiency could reach 27%. Under white-light irradiation, TAPP/COFTGTp can be activated to catalyze oxygen conversion into reactive oxygen species (ROS) including singlet oxygen (1O2); this will annihilate bacteria via the full use of the positive charge of cationic COFTGTp, which closes the distance between the bacteria and ROS. In addition, MTT and hemolysis experiments showed that TAPP/COFTGTp was almost noncytotoxic and did not cause hemolysis. Most remarkably, the minimum inhibitory concentrations (MICs) of TAPP/COFTGTp for E. coli and S. aureus were 100 μg mL−1 and 50 μg mL−1, respectively. As a result, TAPP/COFTGTp is expected to be an antibacterial material and have promise for substituting traditional antibiotics to solve antibiotic resistance and the emergence of superbacteria.
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SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2024
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IF 6.3
Wei Xie,Xiaoke Li,Jiaying Zhou,Fei Yin,Yaogang Jiang,Liu Yang
In this study, a novel approach for the synthesis of eco-friendly and cost-effective composite nanomaterials PPy@HNTs was introduced. The proposed synthesis method offers environmental friendliness, simplicity, and cost-effectiveness. The resulting PPy@HNTs nanofluids , obtained through dispersion in a specially formulated base solution, demonstrate excellent dispersion stability , desirable thermophysical properties , and remarkable photothermal conversion performance. At a concentration of 800 ppm, the PPy@HNTs nanofluids exhibited an impressive efficiency of 79.2 %, surpassing the performance of conventional heat transfer fluids (HTFs). This research presents a promising avenue for the utilization of low-cost nanofluids in the field of photothermal applications.
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