SYNTHETIC METALS
·
2022
·
IF 4
Dongna Zou,Ruxangul Jamal,Tursun Abdiryim,Lielie Liu,Haile Liu,Nana Fan
Here, the ZnO-NRs/poly(EDOT-Pyridine-EDOT) core/shell heterostructure nanoarrays was prepared by the electrochemical polymerization of D-A-D type monomer (the 3,4-ethylenedioxythiophene(EDOT, donor) endcapped trimer with the pyridine(acceptor) as internal unit) on ZnO-NRs. This core/shell heterostructure nanoarrays was combined with ZnO-NRs to form p-n heterojunction for UV photodetector by face to face clamping of the two electrodes (ZnO-NRs/poly(EDOT-Pyridine-EDOT) and ZnO-NRs). The current-voltage and current-time curves under bias voltages of 1–6 V were tested, and the photoresponses of heterojunctions and bias voltages to UV light irradiation were systematically studied. The results showed that the poly(EDOT-Pyridine-EDOT) (poly(BPE)) uniformly covered ZnO-NRs and formed a core-shell structure, which was beneficial to increase the contact area between ZnO-NRs and poly(BPE). The ZnO-NRs/poly(BPE) heterojunction effectively improved the response performance of the UV photodetector and exhibited the highest photoresponsivity under 5 V bias voltage. The responsivity (R), detectivity (D*) and external quantum efficiency (EQE) were 150.87 A/W, 2.18 × 10 12 Jones and 51,351.5 %, respectively.
研究领域:
材料科学
·
光电材料与器件
✓ 已验证
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 16
·12237-12247
·
IF 3.84
Zifei Wang,Zhipeng Wang,Hui Zhang,Xuemin Duan,Jingkun Xu,Yangping Wen
A novel and simple strategy to prevent swelling, disintegration, cracking and peeling-off of poly(3,4-ethylenedioxythiophene):poly(styrene-sulfonate) (PEDOT:PSS) film in water was developed. This strategy was based on the film of a conducting polymer, poly(acrylic acid modified EDOT-co-EDOT):PSS (poly(EDOT-co-EDOT-AA):PSS). The film had high soaking stability, good adhesive ability, and high flexibility, which are crucial to maintaining long-term electrode stability in water of the PEDOT:PSS film. The most widely studied novel carbon nanomaterial, graphene, and a unique and versatile clay nanomaterial, halloysite, were introduced into poly(EDOT-co-EDOT-AA):PSS aqueous dispersion to prepare organic polymer–inorganic nanocomposites. Use of poly(EDOT-co-EDOT-AA):PSS film and its composite films as electrode coatings enabled long-term high performance of the film electrodes and provided high electrode stability and high adhesive ability. The structure, optical, flexibility, conductivity properties and morphology of poly(EDOT-co-EDOT-AA):PSS and its composites were systematically investigated. The performance of poly(EDOT-co-EDOT-AA):PSS film and its composite films, and their electrodes in sensing applications was also evaluated. The as-prepared electrochemical electrodes displayed high electrocatalytic activity in the detection of epinephrine, tryptophan, maleic hydrazide, and vitamin B6, as well as high sensing stability. The results indicated that poly(EDOT-co-EDOT-AA):PSS and its composites had potential applications for various electrode coatings.
研究领域:
材料科学
·
生物医学工程
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2022
·Vol. 14
·期 22
·4965
·
IF 4.967
Zipeng He,Haoran Xu,Yuhang Zhang,Yanjun Hou,Haijun Niu
Four new multifunctional polymers (P1, P2, P3, and P4) containing EDOT units were synthesized by the Stille coupling reaction. A PL spectrum test found that the introduction of large conjugated groups led to strong fluorescence emission in all polymers. Among the electrochromic and switch properties, these polymer films exhibited reversible color changes, as well as good coloring efficiency. Electrochemical experiments found that the initial oxidation potentials of the polymers were 1.27 V, 1.67 V, 1.78 V, and 1.58 V, respectively. Among them, P3 showed a higher coloring efficiency (283.3 cm2·C−1), and P2 showed a shorter response time (tc= 2.2 s, tb= 2.8 s). These polymers all exhibited electrochromic and resistive switching storage characteristics. They have good solubility in many organic solvents. In the resistance switch memory characteristics, all polymers had obvious memristive properties, and P4 exhibited a larger switch current ratio (2527.42) and a smaller threshold voltage (0.9 V).
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
Nano Energy
·
2021
·
IF 17.881
Chong Dong,Jing Chen,Chun-Hao Chen,Yi-Ran Shi,Wen-Fan Yang,Kai-Li Wang,Zhao-Kui Wang,Liang-Sheng Liao
To promote the commercialization of perovskite photovoltaics , the development of annealing-free techniques is one of effective strategies to lowering the whole manufacture cost. Unfortunately, annealing-free perovskite films are always accompanying with unsatisfactory crystallization, which would cause defect generation and adverse carrier nonradiative recombination. Herein, we chose triple-cation perovskite and introduce 3,4-ethoxylene dioxy thiophene (EDOT) into anti-slvent to realize annealing-free perovskite films. EDOT-assisted anti-solvent strategy aids to form high quality perovskite films with enlarged crystal grains and reduced defects via the interaction between oxygen and lead. The fabricated flexible and rigid solar cells delivered the power conversion efficiency of 15.58% and 20.12%, respectively, under AM 1.5 G illumination. The flexible and rigid devices also exhibited excellent indoor (@1000 lux) performance of 22.79% and 32.61%, respectively. The developed anti-solvent engineering provides a facial and effective strategy to fabricate low-cost flexible perovskite photovoltaics for indoor and outdoor applications.
研究领域:
材料科学
·
光伏技术
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2024
·
IF 9.7
Yin Zhu,Zhikai Cao,Liming Che,Haiqiang Lin,Quancong Zhang,Hua Zhou
3,4-ethylenedioxythiophene (EDOT) is a significant material in the electronics industry for synthesizing Poly (3,4-ethylenedioxythiophene) (PEDOT). However, a significant amount of EDOT (>50%) is discarded in wastewater during the electrochemical polymerization of PEDOT owing to the low conversion of EDOT. To address this issue, a process for recovering EDOT through extraction and subsequent distillation was presented. Toluene was chosen as the extractant through a combination of COSMO-SAC and experiments, and the extraction mechanism was analyzed by quantum chemistry calculation. Next, the liquid-liquid equilibrium (LLE) data for the quaternary system of water, ethanol, toluene, and EDOT were obtained and fitted with the NRTL model. Furthermore, the recovery process was simulated and optimized. The results indicate that the recovery ratio of EDOT is higher than 99.8%, and the profit of per ton wastewater is 5756.97 CNY. The proposed process shows great potential for industrial application and cleaner production.
研究领域:
化工工程
·
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
ChemCatChem
·
2021
·Vol. 14
·期 6
·e202101539
·
IF 5.686
Siwei Zhao,Shaohua Jin,Huanmin Liu,Youxin Su,Wei Liu,Shengfu Li,Chongchong She,Haonan Li,Kun Chen
Graphical A series of all-inorganic lead-free halide perovskite inverse opals were prepared and furtherly used as the photocatalysts to promote the polymerization of EDOT under the irradiation of visible light. All the samples exhibited the nice replica of the artificial template and high crystallinity. The bandgap of the catalysts was adjusted by screening the ratios of bromide to iodide and antinomy to bismuth. Cs 3 Bi 0.5 Sb 1.5 Br 9 showed the highest performance of the photocatalytic polymerization for EDOT, indicating the dual halide perovskites are more flexible than single halide perovskite in terms of bandgap engineering. A series of all-inorganic lead-free halide perovskite inverse opals were prepared and furtherly used as the photocatalysts to promote the polymerization of 3, 4-ethylenedioxythiophene (EDOT) under the irradiation of visible light. All the samples exhibited the nice replica of the artificial template and high crystallinity. The bandgap of the catalysts was adjusted by screening the ratios of bromide to iodide and antinomy to bismuth, respectively. Among all the samples, Cs 3 Bi 0.5 Sb 1.5 Br 9 inverse opal showed the best catalytic performance and the excellent stability in terms of the morphology and the crystalline phase after four cycles of photocatalytic polymerization. Since EDOT is commercially available, the present observation suggested a convenient protocol of preparing the composited materials or optoelectronic devices based on the lead-free halide perovskites and the conductive poly(3, 4-ethylenedioxythiophene).
研究领域:
材料科学
·
光催化
✓ 已验证
DOI
高影响因子
ORGANIC ELECTRONICS
·
2019
·
IF 3.495
Fu-han Liu,Ju Bai,Guang Yu,Fang-hong Ma,Yan-jun Hou,Hai-jun Niu
A series of novel polyazomethines containing EDOT and thiophene units coded as PEDOTs (PEDOT-TPA, PEDOT-TDD, PEDOT-THIO, PEDOT-APM) and PTHIOs (PTHIO-TPA, PTHIO-TDD, PTHIO-THIO, PTHIO-APM) were synthesized successfully. They were gained in short time, low cost and mild reaction conditions by a straightforward synthetic path. It can be easily found from the electrochemical properties of these polymers that the polymers containing 3,4-ethylenedioxythiophene (EDOT) unit (PEDOTs) have lower initial oxidation potentials as compared to the polymers containing thiophene unit (PTHIOs). Spectroelectrochemical properties reveal that all of the polymer films exhibit outstanding multielectrochromic behaviors, distinct color contrast and excellent electrochemical stabilities. Kinetic studies show that the PEDOT-TPA film has the shortest response time (a color switching time of 4.54 s and a bleaching time of 3.88 s at 428 nm) and the PEDOT-THIO film exhibits the highest CE of 343.56 cm 2 C −1 . Typical I-V characteristics of the ITO/plymer/Al memory devices exhibit that all the memory devices based on PEDOTs and PTHIOs exhibited nonvolatile flash memory characteristics, with an ON/OFF current density ratio of 10 3 -10 4 and low threshold voltages (around 1 V). Thus, these characteristics illustrate that these novel polymers have great potential in optoelectronics applications as electrochromic materials and memory devices.
研究领域:
材料科学
·
电化学
·
光学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Bin Hu,Chunyang Li,Zengchen Liu,Xinlei Zhang,Wen Luo,Lin Jin
Two novel asymmetric structure monomers , 3,6-Bis-(2,3-dihydro-thieno[3,4- b][1,4]dioxin-5-yl)-9-[4-(2,5-di-thiophen-2-yl-pyrrol-1-yl)-phenyl]-9H-carbazole (BDTC) and 2,7-Bis-(2,3-dihydro-thieno[3,4-b][1,4]dioxin-5-yl)-9-[4-(2,5-di-thio phen-2-yl-pyrrol-1-yl)-phenyl]-9H-carbazole (BDDC), were designed and synthesized. Both the monomers could be electropolymerized to form the related polymer films. The electrochemical and electrochromic properties of polymer films were different from that of their homopolymers , which could be attributed to the similar copolymerization effect of asymmetric structure. Different linked positions also led to different features, PBDDC film showed more colors (orange, yellow green, green and blue) than that of PBDTC film (yellow, green and purple blue). However, after the introduction of 2, 2′-Bi(3,4-ethoxylene dioxy thiophene)(BIEDOT), the resulting copolymers exhibited similar electrochromic features(red, brown yellow, green and blue) due to the leading effect of EDOT units. Moreover, all the polymer films displayed fast switching time, reasonable optical contrast and good coloration efficiency, which made them have potential application in electrochromic devices.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ECS Journal of Solid State Science and Technology
·
2015
·Vol. 5
·期 2
·P21
·
IF 1.558
Bin Hu,Wen Luo,Lin Jin,Zengchen Liu,Mengnan Wang,Liuyang Zhou,Chunyang Li
Two novel carbazole-3, 4-ethoxylenedioxythiophene (EDOT) derivatives containing acceptor groups such as benzonitrile and phthalonitrile were synthesized and characterized. Both the monomers could be electrochemically polymerized and form stable electroactive polymer films. Spectroelectrochemical technique were performed to investigate the electrochemical and optical changes of the resulting polymer films, multi-electrochromic properties upon different applied potentials suggested the effect of the benzonitrile and phthalonitrile units and their potential applications in electrochromic device. Furthermore, scanning electron micrographs (SEM) were used to study the microstructure morphology of polymer films.
研究领域:
材料科学
·
电化学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2023
·
IF 6.2
Xinsheng Tang,Hujun Zhang,Ruxangul Jamal,Abdukeyum Abdurexit,Nawrzhan Serkjan,Shuyue Xie,Yiming Liu,Tursun Abdiryim
A self-powered ultraviolet photodetector (UV PD) effectively utilizes UV energy and has attracted greatly attention due to its no consuming of any external power. In this work, TiO 2 nanoarrays (NRs) were synthesized by a one-step hydrothermal method, which was combined with P(TTh-co-EDOT) to realize a high-performance p-n heterojunction UV PD, and P(TTh-co-EDOT) was evaluated as the photosensitive layers in UV PDs for the first time. Furthermore, the working mechanism for the self-powered of UV PD was discussed in detail based on the energy band theory. Different electrochemical deposition cycles of TTh-co-EDOT on the surface of TiO 2 NRs were applied to form p-n heterojunction for achieving the optimum photoelectric performance. Among them, it was found that the optimum UV PD based on face-to-face fabrication of TiO 2 NRs and P(TTh-co-EDOT) from 3 deposition cycles exhibits an enhancement of photoelectric performance without applying any external voltage. Benefiting from the enhanced built-in electric field of the TiO 2 NRs/P(TTh-co-EDOT) interface, balancing photogenerated carriers and the charge separation and transport in self-power mode, the responsivity and detectivity of TiO 2 NRs/P(TTh-co-EDOT)-3C are 2.252 mA/W and 3.413 × 10 10 Jones, with the rise and fall times are 0.256/0.427 s, which exhibited excellent photoelectric properties and stability. TiO 2 NRs/P(TTh-co-EDOT)-1C has the lowest responsivity (0.0995 mA/W) and detectivity (6.035 × 10 9 Jones) and TiO 2 NRs/P(TTh-co-EDOT)-4C has the longest rise and fall times (0.460/0.451 s). These results suggest that the great potential of the TiO 2 NRs and P(TTh-co-EDOT) for high-performance UV PDs.
研究领域:
材料科学
·
纳米技术
·
光电探测器
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SYNTHETIC METALS
·
2017
·
IF 2.435
Bin Hu,Xinlei Zhang,Jin Liu,Xinxin Chen,Jiawei Zhao,Lin Jin
Three novel monomers based on carbazole-3, 4-ethoxylenedioxythiophene and redox groups were synthesized and characterized. Their polymer films were obtained by electropolymerization. Cyclic voltammetry and spectroelectrochemistry of the polymer films showed that they possessed multi-electrochromic property. The presence of ferrocene and 2,2,6,6-tetramethyl-1-piperidinyloxy units not only changed the films’ colour but also improved their switching time due to their excellent electrochemical properties. Additionally, the polymer films also possessed a reasonable transmittance change, which made them promising candidates for use in electrochromic devices.
研究领域:
电化学
·
材料科学
·
聚合物化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2013
·Vol. 160
·期 3
·H173
·
IF 2.588
Bin Hu,Xiaojing Lv,Jingwei Sun,Mi Ouyang,Zhiyan Fu,Cheng Zhang
In this study, a novel material, Z-2, 3-bis(4-(thiophen-3-yl)-phenyl) –acrylonitrile (Z-TPA), was synthesized and characterized. Optical and electrochromic properties of its homopolymer and copolymer with 3, 4-Ethylenedioxythiophene (EDOT) were investigated in details. UV–vis absorption and fluorescence spectra showed that this material possessed the properties of aggregation-induced emission (AIE) due to the introduction of acrylonitrile, which could show sky-blue emitting at the aggregation state and almost no emitting at the solution state. Both its polymer and copolymer displayed better redox activity. Spectroelectrochemical analysis displayed that the copolymer film exhibited multicolor showing, with a claret red in the fully reduced form and a blue-green color in the fully oxidized. Spectrochronoamperometry data revealed that the copolymer films had fast switching time and high chromatic contrast as compared to the homopolymer P(Z-TPA). What's more, the copolymer film was used to construct a dual type polymer electrochromic device (ECDs) with PEDOT. The performance of ECDs were also investigated.
研究领域:
材料科学
·
光学
·
电化学
✓ 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）