APPLIED SURFACE SCIENCE
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2016
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IF 3.15
Hongbing Wang,Jianfeng Zhang,Yuping Wu,Huajie Huang,Gaiye Li,Xin Zhang,Zhuyin Wang
Herein we report a simple and facile method to delaminate MXene Ti 3 C 2 multilayers by the assistance of surface modification using aryl diazonium salts. The basic strategy involved the preparation of layered MAX Ti 3 AlC 2 and the exfoliation of Ti 3 AlC 2 into Ti 3 C 2 multilayers, followed by Na + intercalation and surface modification using sulfanilic acid diazonium salts. The resulting chemically grafted Ti 3 C 2 flakes were characterized by Fourier transform infrared (FT-IR) spectroscopy and X-ray photoelectron spectroscopy (XPS) to confirm the presence of the surface organic species. Ultraviolet-visible spectroscopy revealed that surface-modified MXene Ti 3 C 2 sheets disperse well in water and the solutions obey Lambert–Beer’s law. Scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD) were used to demonstrate the morphology and structure of delaminating MXene Ti 3 C 2 flakes. The results indicated that chemical modification for MXene multilayers by aryl diazonium salts induced swelling that conversely weakened the bonds between MX layers, hence leading to large-scale delamination of multilayered MXene Ti 3 C 2 via mild sonication. Advantages of the present approach rely not only on the simplicity and efficiency of the delamination procedure but also on the grafting of aryl groups to MXene surfaces, highly suitable for further applications of the newly discovered two-dimensional materials.
研究领域:
材料科学
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化学
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2017
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IF 5.401
Jianjun Du,Hong Du,Xiangyu Li,Jiangli Fan,Xiaojun Peng
Aniline, a typical example of arylamines, is one of most important raw materials in many industries. However, arylamine-related pollution in waters threatens the public health and environment along with their wide applications. In this work, a simple, fast, and convenient colorimetric sensing system was presented for the arylamine (e.g. aniline) recognition in aqueous media. The system was presented using diazonium salt (DS) decorated gold nanoparticles (AuNPs), based on the classic coupling reaction of arylamine with diazonium salt. DS-AuNPs showed an excellent response and a good sensitivity to aniline, and the limit of detection reached 0.5 μM for aniline in this work. There was a good linear relationship (R2 = 0.997) between the values of A640 nm/520 nm and aniline concentrations over a range of 5–60 μM, which covered the Chinese standard of the maximum permissible pollutant emission concentration for aniline. The introduction of arylamine (e.g. aniline) caused a rapid and obvious red-to-blue color change, so the arylamine-polluted water could be qualitatively recognized by our naked-eyes and quantitatively measured by absorbance changes.
研究领域:
环境科学
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分析化学
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材料科学
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DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
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2022
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IF 6.267
Jun Chen,Yan Zhao,Mingchen Sun,Zhiwei Liu,Hansong Liu,Shu Xiong,Shuang Li,Jiupeng Song,Kai Wang
In this study, a simple and rapid grafting method, without damage to carbon fiber (CF), is proposed to graft MXene nanosheets onto the surface of CF via covalent bonds through electrochemical aryldiazonium salt reaction and using p-phenylenediamine molecule as a bridge so as to enhance the interfacial properties of CF/epoxy (EP) composites. The surface morphology , chemical activity and wettability of the modified CF were characterized by scanning electron microscope, atomic force microscopy , X-ray photoelectron spectroscopy and dynamic contact angle test. The effect of such surface modification method on the mechanical properties was also evaluated. Compared with untreated CF, the interfacial shear strength of MXene functionalized CF reached 123.86 MPa, increasing by 33.5% while the tensile strength is not reduced. The interfacial enhancement mechanism might be the strong physical and chemical interactions between MXene and EP resin matrix produced by the rough structure and high surface activity of MXene. This work may provide a new idea with a facile and rapid approach to modify the surface of CF and improve the interfacial properties of composites without degrading the mechanical property of pristine CF.
研究领域:
材料科学
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复合材料
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DOI
高影响因子
FIBERS AND POLYMERS
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2018
·Vol. 19
·期 10
·2134-2138
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IF 1.353
Wang Zongqian,Li Changlong,Zhang Hulin,Liu Zhi
Chromophore incorporated into the protein chains through residue modification on silk fibroin will be an important way to get new dyeing technology with improved color fastness. Herein, 1-aminoanthraquinone diazonium salt was prepared and used for the modified dyeing on tyrosine of silk fibroin. The silk after modified dyeing was measured by UV-Vis, FTIR, MS, 1 H-NMR, Data color, and other testing techniques. Interestingly, the resulting silk showed excellent rub and wash fastness. The enhanced color fastness is contributed by an electrophilic substitution reaction between 1- aminoanthraquinone diazonium salt and the ortho position of phenolic hydroxyl in tyrosine molecular. Moreover, the mechanical property of silk was protected effectively by the mild coupling modified dyeing, better than the traditional acid dyeing under high temperature for a long time. This facile strategy provides an alternative approach to silk dyeing and benefits the silk applications.
研究领域:
纺织科学
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生物化学
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DOI
高影响因子
JOURNAL OF ORGANIC CHEMISTRY
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2021
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IF 4.354
Qingqiang Tian,Shasha Xu,Chiying Zhang,Xinyi Liu,Xiangwei Wu,Yahui Li
Herein, an interesting palladium-catalyzed procedure for the direct carbonylative thiomethylation of aromatic amine derivatives with 4-methylthio-2-butanone is developed. Using 4-methylthio-2-butanone as (methylthio) transfer agent, a variety of corresponding thioesters are obtained with moderate to good yields under base-free condition. In addition, good functional group tolerance can be observed.
研究领域:
有机化学
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合成化学
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DOI
PubMed
高影响因子
Processes
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2023
·Vol. 11
·期 12
·3429
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IF 3.5
Fan Shu,Weilin Chen,Gang Liu
Quantum dots (QDs) are emerging as promising candidates for innovative memristive materials, owing to their distinct surface, quantum size, and edge effects. Recent research has focused on tailoring QDs with specific organic molecules to fine-tune charge transfer states between the host and grafted species, as well as enhancing their dispersibility and processability. Violet phosphorus (VP), a newly discovered two-dimensional phosphorus allotrope, offers excellent carrier dynamics, predictable modifiability, and superior oxidation resistance, making it a promising contender in this domain. In this study, we synthesized a rich azobenzene-containing star-shaped polymer diazonium salt (AzoSPD) to functionalize violet phosphorus quantum dots (VPQDs), with the dual objectives of enhancing organic dispersibility and introducing photo-switching capabilities. The synthesized AzoSPD–VPQDs exhibit intramolecular charge transfer characteristics under electrical stimuli of ambient conditions, displaying significant non-volatile rewriteable memory properties and a substantial switching ratio exceeding 2 × 103. Furthermore, the high resistance state (HRS) current can be enhanced by nearly 40 times under 465 nm illumination, enabling optoelectronic information sensing and storage within a single device. This work not only provides insights into enhancing the optoelectronic properties of QDs through functional organic molecular modification but also represents a pioneering exploration of the potential applications of VPQDs in novel memristors.Keywords:violet phosphorus quantum dots;star-shape polymer diazonium salt;memristor;charge transfer mechanism;photoelectric regulation
研究领域:
材料科学
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纳米技术
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光电材料
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产品关联
DOI
高影响因子
Nanoscale
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2025
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IF 5.1
Chuangxin Zhou,Zhiheng Zhang,Yuan Gao,Weize Diao,Siyi Zou,Jun Zhu,Jiangtao Xu,Guozhen Liu
Surface modification of Eutectic Gallium Indium (EGaIn) to inhibit oxidation has been a long-lasting challenge in material science, with limited research reporting the formation of a covalent bond between Ga and modifiers for stability purposes. Taking advantage of strong reductive property of EGaIn, this study developed a simple method for spontaneous reduction of aryldiazonium salts on EGaIn nanoparticle surface to form stable covalent Ga-C sigma bonds, effectively suppressing surface oxidation.Comprehensive characterization confirmed the formation of the covalent Ga-C bond rather than Ga-N=N-C bonds on the EGaIn nanoparticle surface. Approximately 20% of Ga(0) in EGaIn forms Ga-C bonds. Notably, the short chain aryl modified EGaIn nanoparticles exhibited high stability and negligible surface oxidation. This straightforward strategy for preparing stable aryl modified EGaIn nanoparticles allows the introduction of a range of ligands on the EGaIn nanoparticle surfaces, offering promising opportunities for diverse applications across multiple fields.
研究领域:
材料科学
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纳米科技
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表面化学
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生物材料
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药物递送
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2020
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IF 5.774
Shengchao Zhao,Longting Li,Ming Wang,Lihong Tao,Yingfei Hou,Q. Jason Niu
The strategy of introducing a hydrophilic interlayer (IL) on the substrate has been widely used in the preparation of nanofiltration (NF) membranes. In this paper, we perform a rapid in-situ coupling reaction of tannic acid (TA) and a dual diazonium salt (DDS) to construct a novel stable azo-based interlayer on the polysulfone (PSf) ultrafiltration membrane. Through exploring the concentration and the deposition time of TA, the protocol of fabricating the interlayer with the optimal hydrophilicity is determined. Relevant characterizations indicate that the thickness of the interlayer is quite thin, and the defects at the surface of the pristine substrates disappear after modification. Interestingly, the color of the substrate with interlayer changes dramatically after pouring piperazine (PIP) solution thereon, implying that there is considerable interaction between the phenolic hydroxyl groups at the interlayer and the PIP molecules in aqueous phase. By further reducing the PIP concentration, an active layer of which thickness is only about 35 nm was obtained. The separation performance evaluation suggests that the optimized novel NF membrane exhibits a 2.71-fold increase in water permeance (17.40 ± 1.09 L m −2 h −1 bar −1 ) compared with the conventional one. Moreover, the discussion about the role of the interlayer on interfacial polymerization (IP) is also provided with advanced significance.
研究领域:
材料科学
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化学工程
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膜技术
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DOI
高影响因子
POLYMER COMPOSITES
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2018
·Vol. 40
·期 6
·2346-2356
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IF 1.943
Zhujun Wang,Qian Li,Zheming Chen,Huayi Li,Shuirong Zheng,Xiaobin Tang
Functionalization of boron nitride nanosheets (BNNSs) has always been a challenge due to its chemical inertness and anti-oxidative properties. In a concentrated base environment, the B-N bonds on the surface of BNNSs were broken to produce a large number of B-OH and N-H functional groups. Afterwards, aniline carbocation produced by decomposition of the diazonium salt was utilized to achieve high grafting content of Ph-NH 2 groups onto the surface of BNNSs. Further, the amide reaction between amino and stearyl chloride verified the reactivity of Ph-NH 2 groups on the surface of BNNSs, with the result that BNNSs were abundantly decorated by aliphatic chains at 22.9 wt% grafting yield. The surface aliphatic chains of BNNSs strongly improved the interfacial adhesion between the High-density polyethylene (HDPE) matrix and the filler and provided an excellent dispersion of SC-BNNSs in the HDPE matrix. Therefore, HDPE/SC-BNNSs nanocomposites showed improved thermal stability, thermal conductivity, neutron shielding property and flexural modulus with no apparent reduction in tensile strength. When filler content exceeded 5 wt%, the HDPE/SC-BNNSs nanocomposites showed a higher thermal decomposition temperature than the composites with pristine BNNSs fillers. POLYM. COMPOS., 40:2346–2356, 2019. © 2018 Society of Plastics Engineers
研究领域:
材料科学
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聚合物化学
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纳米技术
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DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
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2022
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IF 9.879
Shengdao Wang,Shuwen Zhang,Yanchao Yang,Zhongxin Dong,Guibin Wang
Electrochemical grafting of diazonium salts have been applied to improve interfacial properties of carbon fiber and matrix resin . However, these graft modifications are still limited to general-purpose carbon fiber reinforced resin matrix composites such as epoxy. In this research, the direct grafting of Poly (aryl ether ketone) (PAEK) macromolecule on carbon fiber was achieved with mild condition. Firstly, aniline was introduced into Poly (ether ether ketone) (PEEK) as pendent group to improve solubility and amino terminated group was introduced as precursor of diazonium salt. Then the graft was conduct through diazonium salt reduction. After modification, the aniline side group could be hydrolyzed off to recover crystallinity . To further analyze the graft, single molecular-force spectroscopy was introduced to investigate the surface of carbon fiber. Impressively, the extension curve suggested the PAEK macromolecule had been attached to surface through strong interaction. Combined this with XPS data, it was believed that the graft was a success. As a result, the grafted polymer along with the polymer that physically absorbed on carbon fiber in electrolyte can cooperate to strengthen the interface. The interfacial shear strength of the grafted carbon fiber and PEEK increased from 42.27 MPa to 97.33 MPa by 130.26%. The improvement mainly originated from the covalent bonding that connected the carbon fiber and the graft coating layer as well as the great compatibility between the graft coating layer and the matrix resin. These results also demonstrated the possibility to graft high performance polymers on carbon fiber through one-step modifications.
研究领域:
材料科学
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聚合物化学
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复合材料
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2023
·
IF 13.6
Siyang Deng,Junmei Liu,Dong Han,Xinting Yang,Huan Liu,Chunhui Zhang,Christophe Blecker
A novel ratiometric fluorescent nanoprobe (Rh6G@UIO-66-NH 2 ) was fabricated for efficient nitrite (NO 2 – ) detection in the present study. When NO 2 – was introduced, it interacted with the amino groups on the surface of Rh6G@UIO-66-NH 2 , forming diazonium salts that led to the quenching of blue fluorescence. With this strategy, a good linear relationship between NO 2 – concentration and the fluorescent intensity ratio of the nanoprobe in the range of 1–100 μM was established, with a detection limit of 0.021 μM. This dual-readout nanosensor was applied to analyze the concentration of NO 2 – in real meat samples, achieving satisfactory recovery rates of 94.72–104.52%, highlighting the practical potential of this method. Furthermore, a portable Gel/Rh6G@UIO-66-NH 2 hydrogel test kit was constructed for on-spot dual-mode detection of NO 2 – . This kit allows for convenient colorimetric analysis and fluorometric detection when used in conjunction with a smartphone. All the photos taken with the portable kit was converted into digital information using ImageJ software. It provides colorimetric and fluorescent visual detection of NO 2 – over a range of 0.1–1.5 mM, achieving a direct quantitative tool for NO 2 – identification. This methodology presents a promising strategy for NO 2 – detection and expands the application prospects for on-spot monitoring of food safety assessment.
研究领域:
分析化学
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食品科学
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材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
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