RSC Advances
·
2016
·Vol. 6
·期 53
·47498-47508
·
IF 3.289
Yan Yuan,Yulin Zhang,Ren Liu,Jingcheng Liu,Zhiquan Li,Xiaoya Liu
In this study, 7-(4-vinylbenzyloxyl)-4-methylcoumarin (VM) and maleic anhydride (MA) were polymerized through free radical copolymerization to form a photosensitive alternating copolymer P(VM-alt-MA) (PVMA). PVMA was used as a soft template to achieve the oxidative polymerization of poly(3,4-ethylenedioxythiophene) (PEDOT). We obtained a stable PEDOT:PVMA photosensitive aqueous dispersion with an average diameter in the range of 140 to 210 nm. We then used this aqueous dispersion as the ink for fabricating humidity sensors through inkjet-printing on a paper substrate. The printed photosensitive conductive film PEDOT:PVMA could be cross-linked after photo-dimerisation of coumarin groups, leading to a small decrease of electrical conductivity, but also appreciable improvements in water resistance and sensor robustness. The humidity sensing ability of these PEDOT:PVMA/paper sensors was investigated by exposing them to a wide range of relative humidity, namely 11–97% at room temperature. These paper sensors could selectively and reversibly detect water vapor with a significant linear relationship. The response strength and the response/recovery time of the sensors show a substantial improvement compared with those of previous reports. The photo-dimerisation of PEDOT:PVMA improves the stability of humidity response and the response/recovery time of the sensors.
研究领域:
材料科学
·
传感器技术
·
化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 12
·120517
·
IF 4.386
Jingwei Zhou,Jiali Zhang,Mao Mao,Haixia Zhang,Ying Hou,Junjie Guo
The construction of conductive graphite channels on paper using the pencil drawing method for supercapacitors and sensors has been reported, but its performance needs to be improved to meet practical applications. In this, we develop green and efficient method to prepare high-performance supercapacitor electrodes. After pencil drawing, the polypyrrole graphite active material (PPy-G) is prepared via interfacial polymerization. The graphite layer not only provides an efficient electron transport path but also greatly increases the electrical capacity of electrodes with a good combination of PPy. The prepared electrodes exhibit an excellent area specific capacitance (1654 mF cm−2) and good cycling stability (at 95.3% after 10,000 cycles). Furthermore, the symmetric supercapacitor is prepared using the dual electrodes exhibit a good energy density of 159.6 μWh cm−2 at a power density of 0.8 mW cm−2. The kinetic processes for the electrodes are also further investigated.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 47
·24740-24748
·
IF 8.867
Jie Gao,Lei Miao,Chengyan Liu,Xiaoyang Wang,Ying Peng,Xingyu Wei,Jianhua Zhou,Yu Chen,Ryo Hashimoto,Toru Asaka,Kunihito Koumoto
Being light, cheap, breathable and foldable, paper is emerging as a new type of substrate for flexible thermoelectric films. Several techniques including soaking and magnetron sputtering have been developed to coat inorganic semiconductors onto paper substrate, but the flexibility and thermoelectric performance of the resulting films are still far from satisfactory. This work implements a novel glass-fiber-aided cold-press method for achieving flexible n-type Ag2Te nanowire (NW) films on copy-paper substrate. A greatly enhanced electrical conductivity has been realized in Ag2Te NWs film due to the disappearance of grain boundaries under compression to 30 MPa. As a consequence, the largest power factor (PF) value of up to 192 μW (mK2)−1 at 195 °C surpasses the performance of paper based thermoelectric films reported previously. Moreover, the PF value only decreases by 20% after 500 bending cycles, suggesting the good flexibility of the copy-paper supported Ag2Te NWs films. A thermoelectric module containing 10 pieces of series-connected Ag2Te films is fabricated using this glass-fiber-aided cold-press method. With ΔT increasing from 20 K to 80 K, the open-circuit voltage of module continually increases from about 11 mV to 60 mV. This measurement of open-circuit voltage has been repeated 10 times to confirm the stability of paper-supported Ag2Te thermoelectric module. The glass-fiber-aided cold-press method in this study provides an effective access to high-performance, flexible and solvent-processable inorganic thermoelectric films on copy-paper substrate.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Min Guan,Yang Liu,Hong Du,Yinying Long,Xingye An,Hongbin Liu,Bowen Cheng
Paper-based wearable sensors are becoming popular in flexible electronic devices, owing to their good degradability, high permeability, low cost, and scalable production. However, the strong water absorption of the paper limits its application in wearable strain sensors. Herein, a hydrophobic and breathable paper/MXene/sizing agent (PMS) flexible strain sensor is reported by facile successive dip coating methods. The MXene layer endows the composite with high sensing performance while the sizing agent layer ensures its hydrophobicity. This PMS sensing film demonstrated high sensitivity (gauge factor, GF = 161) in the bending angle of 0-120° and excellent durability of 100,000 cycles in bending deformation of 30°. Benefiting from the paper substrate and the biomass sizing agent, this sensor exhibits superior hydrophobicity (contact angle, CA = 133.4°), good air permeability (154.08 mm/s), and high degradability. For the proof of concept, human movement detection and wearable Morse code wireless transmission systems under water conditions are demonstrated. This work presents an appropriate strategy for building comfortable and versatile paper-based wearable electronics.
研究领域:
材料科学
·
生物医学工程
·
柔性电子
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2025
·
IF 4.6
Hongkun Zhao,Chunning Chen,Yalei Wang,Jiaqi Liu,Jiaxin Lu,Jingtong Zhai,Rui Li,Nan Lu
For on-site analysis, the combination of surface enhanced Raman scattering (SERS) and colorimetry, as a dual-mode detection, can effectively improve the accuracy of detection, and reduce the influence of instrument fluctuation, which greatly improves the accuracy and reliability of the results. However, the preparation of SERS/colorimetry substrates are usually time-consuming and costly, which limits their practical applications. In this paper, a hydrophobic paper-based SERS/colorimetry substrate can be prepared by a simple spraying method. The hydrophobicity is introduced by the structures formed with polydimethylsiloxane and polymethylmethacrylate, which leads to high detection sensitivity due to its enrichment effect. Moreover, the electrostatic interaction between Ag nanoparticles and the analytes further enhances the performance of SERS and colorimetry in detection of thiram and aspartame. It also provides a new method for the detection of aspartame with colorimetry. Finally, the detection limits of SERS and colorimetry for thiram and aspartame are 0.1 mg/L and 0.1 g/L, 1 mg/L and 0.1 g/L, respectively. The paper-based SERS/colorimetry substrate makes the results more reliable through dual-mode detection, which shows great potential in the detection of real samples.
研究领域:
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Cell Reports Physical Science
·
2024
·
IF 7.9
Fukun Niu,Yu Rong,Yibo Zhang,Ru Song,Zhiwei Ye,Peifeng Zou,Chuanxi Xiong,Zhuqun Shi,Quanling Yang
For mid-to-low-end and disposable wireless transmission devices, paper-based low dielectric substrates are cost-effective and environmentally friendly compared to traditional petroleum-based plastics such as polyimides. In this work, we introduce (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO)-mediated oxidation technology into commercial copy paper to achieve in situ growth of zeolitic imidazolate framework (ZIF-67) while increasing porosity. Through impregnation technology, ethyl cellulose and h-BN are combined to improve the water resistance (water contact angle: 122°), thermal conductivity (in-plane thermal conductivity: 13.55 W m −1 K −1 ), and antibacterial properties of the paper. The dielectric permittivity of modified paper is about 3, which exhibits excellent potential as a substrate for centimeter wave patch antennas. After verification, our developed paper oxidation technology is reliable and effective for various cellulose-based papers. This paper provides a low-cost and low-energy approach for the construction of cellulose-based porous structures, which promote the development and application of green materials and alleviate the serious global problem of electronic waste pollution.
研究领域:
材料科学
·
环境科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Guodong Liu,Ling Zheng,Zhuoqing Zhang,Yu Liu,Zhijian Li
The rational preparation and design of electrochromic devices (ECDs) are important for practical application, as integrated on packaging products to express key information by means of some intelligent technologies. This work aims to construct homogeneous film of poly (3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS) adopting organic solvents doping and gravure printing on a paper substrate. The formed PEDOT:PSS film is shown to provide successfully the desired high conductivity and excellent stability after mild post-treatment via formic acid . The intrinsic reason for the conductivity enhancement is disclosed and correspondingly discussed. The prepared PEDOT:PSS film thus functions in parallel as an electrochromic and electrode layer in assembled ECDs. The two-layer ECD supports a well-defined electrochromic contrast (Δ E * = 20.5), high light absorption property (0.27) at 650 nm, fast switching, and high coloration efficiency (122.8 cm 2 C −1 ) at a low potential of |2.0| V. More importantly, the intelligent operation of the electrochromic unit is launched using wireless driving rather than external working voltage as usual. In application, the driving voltage for ECDs is obtained from the screen-printed induction coil that can be coupled with the magnetic field of near field communication (NFC) equipped in a smartphone. Thus, the wireless driven electrochromic system can be additionally integrated on the package together with a printed ECD in order to display the product pattern under the interaction of the smartphone, improving the interactivity between packaging products and consumers, thereby having high potential for application in the fields of intelligent packaging.
研究领域:
材料科学
·
电子工程
·
智能技术
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2023
·
IF 6.2
Guodong Liu,Zhongming Song,Xiuan Gao,Yinfeng Wang,Zhijian Li
Paper, a low-cost and eco-friendly substrate, can be used to prepare flexible electronic devices by resorting to surface modification technology. In this study, we investigated the surface modification of paper substrates, including those that were uncoated or coated with traditional mineral coatings , to analyze the enhancements to surface flatness and water resistance using a UV curing varnish layer. Furthermore, we explored the formation of perovskite films on the surface-modified paper substrates utilizing a PEO-doped perovskite precursor solution in ambient air, and the surface morphology , crystallinity , photoluminescence properties, and absorption properties of the prepared perovskite films were discussed accordingly. Considering the nontransparent feature of paper-based substrates, the inverted perovskite light-emitting device was finally assembled by transfer printing a transparent PEDOT:PSS layer as a top electrode. The conductive and optical properties of the electrode layer were thus analyzed as well. It is found that the surface modification of paper substrates via printing the UV curing varnish can illustrate significant improvements, such as pore-filling on the surface, a more than 10-fold reduction in roughness, and downward penetration. Moreover, prepared perovskite films on the surface-modified coated paper exhibit superior enhancements, including photoluminescence, higher crystallinity, and surface roughness and porosity. Devices fabricated on the surface-modified substrates are less susceptible to short-circuiting. The electroluminescence on the surface-modified coated paper substrate is 2.16 times higher than the prepared device on the surface-modified base paper substrate and even 3.23 times higher than on the PET substrate. Therefore, it is quite feasible to fabricate a perovskite light-emitting device on the modified surface of a paper substrate by using a printed UV curing varnish layer, which is expected to be a promising coating to polish the paper surface in the preparation of electroluminescent devices.
研究领域:
材料科学
·
光电技术
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2014
·
IF 2.129
Qijin Huang,Wenfeng Shen,Qingsong Xu,Ruiqin Tan,Weijie Song
Silver nanoparticles with a mean diameter of approximately 30 nm were synthesized by reduction of silver nitrate with triethanolamine in the presence of polyacrylic acid. Silver nanoparticle-based ink was prepared by dispersing silver nanoparticles into a mixture of water and ethylene glycol. The mechanism for the dispersion and aggregation of silver nanoparticles in ink is discussed. The strong electrostatic repulsions of the carboxylate anions of the adsorbed polyacrylic acid molecules disturbed the aggregation of metal particles in solutions with a high pH value (pH > 5). An inkjet printer was used to deposit this silver nanoparticle-based ink to form silver patterns on photo paper. The actual printing qualities of the silver tracks were then analyzed by variation of printing passes, sintering temperature and time. The results showed that sintering temperature and time are associated strongly with the conductivity of the inkjet-printed conductive patterns. The conductivity of printed patterns sintered at 150 °C increased to 2.1 × 10 7 S m −1 , which was approximately one third that of bulk silver. In addition, silver tracks on paper substrate also showed better electrical performance after folding. This study demonstrated that the resulting ink-jet printed patterns can be used as conductive tracks in flexible electronic devices.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
NANOTECHNOLOGY
·
2019
·Vol. 31
·期 5
·055502
·
IF 3.399
Leilei Lan,Xiangyu Hou,Yimeng Gao,Xingce Fan,Teng Qiu
As a powerful analytical tool of molecular detection, surface-enhanced Raman spectroscopy (SERS) has attracted great attention in varied fields. However, it has seriously impeded the development of SERS that the preparation process is generally complicated and traditional substrates lack eco-friendliness, economy and flexibility. Herein, we fabricated the inkjet-printed paper-based semiconducting SERS substrates for the first time via an inexpensive office inkjet printer with representative two-dimensional MoO3−x nanosheets ink. Compared with conventional substrates, these paper-based semiconducting substrates not only could meet the requirements of simple and large-scale preparation, but also realize efficient sample collection by merely swabbing the surface. We obtained the detection limit concentration of rhodamine 6G as low as 10–7 M. Furthermore, these flexible paper-based substrates were successfully applied to detect crystal violet and malachite green on the fish surface by swabbing. With immense potentiality in practical applications, the inkjet-printed paper-based semiconducting SERS substrates are expected to open a new prospect for SERS.
研究领域:
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2022
·Vol. 189
·期 5
·1-9
·
IF 6.408
Zhang Xinxi,Chen Lulu,Fang Xuejiao,Shang Yunsheng,Gu Haixin,Jia Wenlin,Yang Guohai,Gu Yingqiu,Qu Lulu
Chlorpyrifos is one of the most widely used organophosphate insecticides in agricultural production. Nevertheless, the residues of chlorpyrifos in agricultural by-product seriously threaten human health. Thus, the ultrasensitive detection of chlorpyrifos residues in agri-food products is of great demand. Herein, an AuNP/HNT-assembled disposable paper SERS substrate was prepared by an electrostatic self-assembly method to detect chlorpyrifos residues. The AuNP/HNT paper substrate exhibited high SERS activity, good reproducibility, and long-term stability, which was successfully used for quantitative detection of chlorpyrifos; the detection limit reached 7.9 × 10 −9 M. For spiked apple samples the calculated recovery was 87.9% with a RSD value of 6.1%. The excellent detection ability of AuNP/HNT paper-based SERS substrate indicated that it will play an important role in pesticide detection in the future. Graphical abstract AuNP/HNT assembled disposable paper SERS substrate was prepared by an electrostatic self-assembly method to detect chlorpyrifos residues in fruits.
研究领域:
食品安全
·
分析化学
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Huimin Sun,Xiuting Li,Ziyang Hu,Chenjie Gu,Dong Chen,Jun Wang,Bin Li,Tao Jiang,Xingfei Zhou
As a typical membrane matrix with attractive flexibility, paper has exhibited great feasibility to serve as surface-enhanced Raman scattering (SERS) substrate in the environmental monitoring and surveillance. In this research, we have designed and fabricated a distinctive hydrophilic-hydrophobic SERS substrate utilizing several ordinary papers loaded with Ag nanowires (Ag NWs). Remarkable SERS activities with an enhancement factor (EF) up to 2.63 × 10 6 was successfully achieved in the assembly Ag NWs with the optimal amount of nanotips and overlaps. The hydrophilic-hydrophobic strategy could contribute to anchoring microdroplets and thus enrich analytes to improve the homogeneity of substrate with a low relative standard deviation of 10.6%. Furthermore, the sophisticated SERS substrate was also applied in the in-situ detection of trace furazolidone on fish under the interference of malachite green and the reliable recovery rates were demonstrated as well.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）