International Journal of Electrochemical Science
·
2023
·
IF 1.5
Yang Yimeng,Chao Danming
Color and fluorescence dual-switching materials have recently attracted considerable attention of researchers, primarily because of their unique features in practical applications such as smart sensors, intelligent displays, multipurpose optical devices, and so on. Herein, a novel networked polysiloxane bearing tetraaniline and fluorescein groups (PSTF) was designed and synthesized via electrochemistry-assisted hydrolytic crosslinking reaction. The obtained porous interpenetrating PSTF film revealed expected electrochromic properties with clear color change, quick switching response, and acceptable coloration efficiency. By virtue of energy transfer between electroactive tetraaniline and photoluminescent fluorescein, PSTF film exhibited obvious fluorescent switching behavior under the applied potentials. Furthermore, the fluorescence switching upon acid/base substance was also revealed and investigated, ascribed to the variable molecular structure of PSTF.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Surface Topography-Metrology and Properties
·
2017
·Vol. 5
·期 4
·044001
·
IF 0
Xiangyu Li,Yuwei Ye,Tong Liu,Wenru Zheng,Feng Yang,Haichao Zhao,Liping Wang
Novel quaternary ammonium cation containing tetraaniline (QATA) was successfully synthesized by condensation of amine-capped tetraaniline with 6-bromohexanoic acid, followed by quaternarization with triethylamine. The corrosion inhibition performance of QATA with their adsorption mechanisms for Q235 steel was studied in 1 M HCl solution by a series of methods such as weight loss measurements, potentiodynamic polarization, electrochemical impedance spectroscopy, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and atomic force microscopy (AFM). The inhibition efficiency (IE%) increased with increasing concentrations of QATA, reaching a value up to 97.47% at a concentration of 150 mg l−1. Potentiodynamic polarization curves showed that the QATA affected both cathodic and anodic protection and was a mixed type inhibitor in 1 M HCl corrosive medium. Adsorption isotherm studies confirmed that the absorption of QATA on the Q235 steel surface in 1 M HCl solution obeyed Langmuir adsorption isotherm, and the adsorption process of corrosion inhibition on Q235 steel surface involved both the physical and chemical adsorption. The EDS analysis determined the adsorption of QATA molecules on the steel surface, the surface morphologies before and after immersion in 1 M HCl medium were also investigated by SEM and AFM.
研究领域:
材料科学
·
腐蚀与防护
·
电化学
✓ 已验证
产品关联
DOI
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Dongshan Wang,Jinmei Li,Xin Li,Qi Wang,Peng Liu
The electrochemical performance of supercapacitors is mainly determined by both the electrodes and electrolytes. By integration of the flexible electrodes with redox-mediated gel electrolytes, high performance solid state supercapacitors were designed in the present work. The flexible carbon cloth (CC)-based electrodes were prepared by covalent immobilization of tetraaniline (TA) onto the oxidized carbon cloth (OCC). Hydroquinone (HQ) and p -phenylenediamine (PPD) were used as redox additive respectively to enhance the electrochemical property of the PVA-H 2 SO 4 gel electrolyte. After optimization, high performance flexible solid-state symmetric supercapacitors (SSSCs) were obtained with specific capacitance of 834.0 mF/cm 2 , retention of 93.69% after 10,000 CV cycles and 108.5% after 500 cycles of 180°-bending, and energy density of 74.2 mWh/cm 2 at power density of 405.3 mW/cm 2 . Such outstanding comprehensive performance makes them promising potential for practical application.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2014
·
IF 5.9
Huabo Huang,Wan Li,Hong Wang,Xiaoping Zeng,Qin Wang,Yajiang Yang
Novel conducting hydrogels (PVA-TA) with dual network structures were synthesized by the grafting reaction of tetraaniline (TA) into the main chains of poly(vinyl alcohol) and in situ reinforced by self-assembly of a sorbitol derivative as the gelator. The chemical structure of the PVA-TA hydrogels was characterized by using FT-IR and NMR. The mechanical strength of the PVA-TA hydrogels was strongly improved due to the presence of supramolecular nanofibers. For instance, the compressive and tensile strengths of supramolecular nanofiber-reinforced hydrogels were, respectively, 10 times and 5 times higher than those of PVA-TA hydrogels. Their storage modulus (G′) and loss modulus (G″) were 5 times and 21 times higher than those of PVA-TA hydrogels, respectively. Cyclic voltammetry and conductivity measurements indicated that the electroactivity of reinforced hydrogels is not influenced by the presence of supramolecular nanofibers.
研究领域:
材料科学
·
化学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Meihua Zhu,Xiaoteng Jia,Yumei Li,Chen Zhao,Danming Chao,Caiyun Wang
Polydopamine (PDA), a quinone containing bioinspired material, is attractive for environmental and human-friendly energy storage systems because of its fast and reversible proton-involved redox activity. Herein, we describe a multifunctional porous double-network polymer based on tetraaniline and PDA. This material can take advantage of the redox activity and wettability from PDA, as well as the electronic conductivity and electrochromic capability provided by tetraaniline. It does not show cytotoxic effects as evidenced by conventional cell viability and imaging assays. An electrochromic battery-type device based on this material delivers a considerable capacity of 160 mAh g −1 together with a high coloring efficiency of 270 cm 2 /C and a large optical contrast of up to 37% at 700 nm. The device is capable of storing energy while indicating the energy status visually. This multifunctional porous conductive PDA material is promising for versatile energy storage applications.
研究领域:
材料科学
·
能量存储
·
生物医学工程
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yuqing Hu,Wuwei Feng,Weixuan Zhang,Yingda Zhang,Jinzhang Liu
The polymer dielectric spacer plays a key role in the performance of film capacitors. However, currently, commercial polymer dielectric films generally have low relative dielectric constants (<4) and low capacitive energy storage densities (<3 J cm–3). Here, we report the use of protonated tetra(aniline) (TANI) molecules with a length of 1.3 nm to improve the energy storage performance of poly(ether imide) (PEI) films. With only a small content of TANI doping, i.e., 0.7 wt %, both the dielectric constant and energy storage density of PEI film can be significantly improved, while the dielectric loss remains as low as that of pure PEI. A maximum energy density of 9.4 J cm–3 is achieved. To manifest the efficacy of protonated TANI, polyaniline and deprotonated TANI are also prepared and used as dopants in PEI. The PANI filler can also increase the dielectric constant, while the dielectric loss is increased as well. The deprotonated TANI doped in PEI has no influence on both the dielectric constant and energy density, implying that the protonated amino groups of TANI molecules are responsible for the enhanced dielectric constant of the PEI/TANI composite. The correlation between protonation of TANI dopants and dielectric properties is discussed in detail.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 30
·2301174
·
IF 19
Xiaoling Tong,Dongzi Yang,Tianjiao Hua,Shuo Li,Bingying Wang,Yuanlong Shao
Continuous monitoring of human sweat, which enables highly sensitive multiple biomarkers analysis with a portable power supply, is increasingly desired for the remote healthcare industry. Smart fibers with on-demand functionality are ideal candidates for fabricating noninvasive and conformal bioelectronic devices owing to their considerable flexibility. Herein, a multifunctional textile patch based on a reduced graphene oxide (rGO)/tetra-aniline (TANi) fiber for simultaneous biomarker monitoring and energy supply is reported. Benefiting from the multi-electrochemical redox states and proton doping/dedoping characteristics of TANi, rGO/TANi hybrid fibers are combined into an energy storage device and biosensor in a physiological environment. GO flakes increase the viscoelasticity of the wet-spinning dope by regulating the noncovalent interactions between TANi aggregates, thereby enhancing the mechanical strength and conductivity of the resulting rGO/TANi hybrid fiber. Consequently, the hybrid fiber exhibits high volumetric capacitance and versatile sensing capability for various physiological analytes, e.g., pH, K + , and glucose in sweat electrolyte. Furthermore, a wireless continuous sweat monitoring system is constructed by integrating the multifunctional fiber sensor into a printed electric circuit board with programmed functionality. Such a delicate integrated design that harnesses the signal collection and communication units is anticipated to facilitate practical applications in personalized diagnostic and physiological health.
研究领域:
材料科学
·
生物医学工程
·
可穿戴设备
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR RESEARCH
·
2020
·Vol. 28
·期 8
·721-726
·
IF 2.047
Liu Xincai,Zhou Yan,Chao Danming
In this work, we report a new silica/tetraaniline/carbon nanotubes composite film prepared through an electrochemistry-assisted hydrolytic crosslinking reaction. The resultant samples were characterized through scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR), cyclic voltammetry (CV) and electrochemical impedance spectrum (EIS). Compared to the silica/tetraaniline binary film, this silica/tetraaniline/carbon nanotubes ternary composite film displays enhanced electrochromic performance with large optical contrast values (Δ=67% at 700 nm), high coloration efficiency (85.6 cm 2 /C), and fast switching speed ( t c =1.5 s and t b =5.2 s). This improvement of the electrochromic performance could be attributed to its interpenetrating network architecture, resulting porous structure and good conductivity of the carbon nanotubes. Furthermore, the electrochromic electrode exhibits outstanding cycling stability, due to its robust crosslinking molecular structure and good adhesion to the conductive substrate.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Materials Horizons
·
2023
·Vol. 10
·期 9
·3569-3581
·
IF 13.3
Zhujun Chen,He Liu,Xinyiming Lin,Xianming Mei,Wei Lyu,Yaozu Liao
Stretchable organohydrogel fibers are attracting considerable interest for next-generation flexible and wearable soft strain sensors due to their excellent stability in harsh environments. However, due to the uniformly distributed ions and reduced number of carriers in the whole material, the sensitivity of organohydrogel fibers under subzero temperature is not desirable, which significantly hinders their practical application. Herein, a newly competitive proton-trapping strategy was designed to obtain anti-freezing organohydrogel fibers for high-performance wearable strain sensors via a simple freezing–thawing process, in which tetraaniline (TANI), serving as the proton trapper, and representing the shortest repeated structural unit of polyaniline (PANI), was physically crosslinked with polyvinyl alcohol (PVA) (PTOH). The as-prepared PTOH fiber exhibited an outstanding sensing performance at −40 °C due to the unevenly distributed ion carriers and the highly breakable proton-migration pathways, with a high gauge factor of 24.6 at a strain of 200–300%. Moreover, the existence of hydrogen bonds between the TANI and PVA chains endowed PTOH with a high tensile strength (1.96 MPa) and toughness (8.0 MJ m−3). Accordingly, strain sensors made from PTOH fibers and knitted textiles could monitor human motions rapidly and sensitively, demonstrating their potential as wearable anti-freezing anisotropic strain sensors.
研究领域:
材料科学
·
可穿戴技术
·
传感技术
·
聚合物化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）