Micromachines
·
2022
·Vol. 13
·期 8
·1235
·
IF 3.523
Zhi Zhang,Yao Wang,Qun Chen,Qingguo Gao,Liming Liu,Jianjun Yang,Xinjian Pan,Yu Miao,Feng Chi
The electrophoretic display (EPD) has attracted widespread attention due to its great visual perception, energy-saving, portability, and bistability. However, the EPD still has many problems in response time, colorization, etc., which limits its practical application. In this paper, novel blue electrophoretic particles were prepared with copper (II) phthalocyanine and high ionization 1-butyl-1-methyl piperidinium bromide mono ionic liquid. It was shown that electrophoretic particles dispersed in a non-polar tetrachloroethylene medium had high Zeta potential and electrophoretic mobility. At the same time, electrophoretic particles showed better dispersion stability. Finally, the prepared blue electrophoretic particles and white titanium dioxide particles were compounded to prepare blue and white dual-color electrophoretic dispersion. An EPD cell was made to test its performance. The results showed that the prepared blue and white dual-color electrophoretic dispersion could realize a reversible response. Piperidine mono ionic liquid increased the surface potential of copper (II) phthalocyanine from +30.50 mV to +60.27 mV, enhancing it by 97.61%. Therefore, we believed that modifying particles with high ionization mono ionic liquid had great applicability to the modification of electrophoretic particles, and blue particles prepared with piperidine mono ionic liquid as a charge control agent (CCA) were excellent candidates for EPDs.Keywords:zeta potential;ionic liquid;copper (II) phthalocyanine;electrophoretic particle
研究领域:
材料科学
·
电泳显示器
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLID-STATE ELECTRONICS
·
2016
·
IF 1.345
Jing Xu,Xueqiang Liu,Hailong Wang,Wenlong Hou,Lele Zhao,Haiquan Zhang
Organic thin-film transistors (OTFTs) with high crystallization copper phthalocyanine (CuPc) active layers were fabricated. The performance of CuPc OTFTs was studied without and with treatment by Solvent Vapor Annealing on CuPc film. The values of the threshold voltage without and with solvent-vapor annealing are −17 V and −10.5 V respectively. The field-effect mobility values in saturation region of CuPc thin-film transistors without and with Solvent Vapor Annealing are 0.00027 cm 2 /V s and 0.0025 cm 2 /V s respectively. Meanwhile, the high crystallization of the CuPc film with a larger grain size and less grain boundaries can be observed by investigating the morphology of the CuPc active layer through scanning electron microscopy and X-ray diffraction. The experimental results showed the decreased of the resistance of the conducting channel, that led to a performance improvement of the OTFTs.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 8
·1-10
·
IF 5.479
Li Xiaohua,Wang Shanshan,Meng Yuchan,Wang Xiao,Zhang Yue,Hun Xu
Copper(II) polyphthalocyanine (CuPPc) was combined with graphitic carbon nitride (g-C 3 N 4 ) to form a heterojunction with enhanced photoelectrochemical (PEC) signal. A sensitive PEC method was developed for determination of ractopamine based on a PEC inner filter effect between gold nanoparticles (AuNPs) and the g-C 3 N 4 /CuPPc. A gold electrode was modified with g-C 3 N 4 /CuPPc and the DNA was linked to the AuNPs. Initially, the PEC signal is weak due to the inner filter effect between the AuNPs and g-C 3 N 4 /CuPPc. In the presence of ractopamine, it interacts with the aptamer and the complementary chain (C chain) is released. This triggers the entropy-driven cyclic amplification and results in the release of the substrate B chain (SB chain) from three-dimensional DNA stabilizer. The probe is released from the electrode due to the interaction of probe DNA and the SB chain. As a result, the PEC signal increases linearly in the 0.1 pmol·L −1 to 1000 pmol·L −1 ractopamine concentration range. The detection limit is 0.03 pM, and the relative standard deviation is 3.4% (at a 10 pmol·L −1 level; for n = 11). The method has been successfully applied to the determination of ractopamine in pork samples.
Schematic presentation of detection method based on PEC inner filter effect between AuNPs and the g-C 3 N 4 /CuPPc being fabricated for ractopamine. 3D DNA was used as stabilizer to decrease the PEC blank signal.
研究领域:
分析化学
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纳米技术
·
食品安全
·
生物传感器
✓ 已验证
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 24
·2200307
·
IF 19.924
Xiaodong Wang,Jinxuan Cheng,Li Yin,Zongwei Zhang,Xinyu Wang,Jiehe Sui,Xingjun Liu,Jun Mao,Feng Cao,Qian Zhang
Bismuth telluride alloys favor the applications of low-grade waste heat recovery if their figure-of-merits are improved within the larger temperature range from 300 to 523 K. Herein, this work reports a synergistic optimization for Bi 0.5 Sb 1.5 Te 3 (BST) by incorporating the copper(II) phthalocyanine (CuPc), which is preferentially distributed at the grain boundary of BST after the spark plasma sintering process and suppresses the grain growth of BST. The lattice thermal conductivity of composites is then extensively reduced by the multiscale scattering induced by the CuPc. In addition, the Cu atoms diffuse into the lattice of BST and increase the whole concentration, thus suppressing the bipolar effect. As a result, the average zT value is effectively enhanced from 0.7 to 1.1 in the temperature range between 300 and 523 K. A high conversion efficiency of 6.8% is achieved in a single BST/CuPc 5 leg, which is 41.7% higher than that of BST at temperature different Δ T = 223 K. This result proves that the composition optimization of the BST/CuPc is a promising strategy to improve the application of BST-based TE modules.
研究领域:
材料科学
·
热电学
·
能量转换
·
纳米复合材料
·
固体物理
✓ 已验证
DOI
高影响因子
Micromachines
·
2022
·Vol. 13
·期 6
·880
·
IF 3.523
Yao Wang,Zhi Zhang,Qun Chen,Caihong Ye,Jiahao Zhang,Qingguo Gao,Liming Liu,Jianjun Yang,Xinjian Pan,Yu Miao,Feng Chi,Mingliang Jin
Electrophoretic display (EPD) is a popular display technology in recent years. The core of the EPD is electrophoretic particles, and its Zeta potential has an important impact on EPDs. In this work, a method using pyrrolidine mono ionic liquid was proposed to improve the Zeta potential of electrophoretic particles: Copper (II) phthalocyanine pigment was modified with mono ionic liquid 1-Butyl-1-methylpyrrolidinium bromide. The characterization results show that the mono ionic liquid had been successfully coated on pigment particles. At the same time, the dispersion and stability of particles were improved. The modified Copper (II) phthalocyanine pigment could be stably dispersed in tetrachloroethylene for more than 20 days. The Zeta potential increased from 32.42 mV to 49.91 mV, increasing by 53.95%. Finally, the prepared blue electrophoretic particles were compounded with white titanium dioxide to prepare blue and white dual-color electrophoretic dispersion, and then an EPD cell was designed to test its performance. The results show that the prepared electrophoretic dispersion can realize reversible reciprocating motion. Therefore, because of the unique structure and properties of pyrrolidine mono ionic liquids, the blue nanoparticles prepared with pyrrolidine ionic liquids as charge control agents in this study can be used as excellent candidate materials for EPD.
研究领域:
材料科学
·
显示技术
·
纳米技术
·
化学
✓ 已验证
DOI
高影响因子
Advanced Energy Materials
·
2019
·Vol. 9
·期 26
·1901019
·
IF 24.884
Yaomiao Feng,Qikun Hu,Ehsan Rezaee,Minzhang Li,Zong-Xiang Xu,Andrea Lorenzoni,Francesco Mercuri,Michele Muccini
A power conversion efficiency (PCE) as high as 19.7% is achieved using a novel, low-cost, dopant-free hole transport material (HTM) in mixed-ion solution-processed perovskite solar cells (PSCs). Following a rational molecular design strategy, arylamine-substituted copper(II) phthalocyanine (CuPc) derivatives are selected as HTMs, reaching the highest PCE ever reported for PSCs employing dopant-free HTMs. The intrinsic thermal and chemical properties of dopant-free CuPcs result in PSCs with a long-term stability outperforming that of the benchmark doped 2,2′,7,7′-Tetrakis-( N , N -di- p -methoxyphenylamine)-9,9′-Spirobifluorene (Spiro-OMeTAD)-based devices. The combination of molecular modeling, synthesis, and full experimental characterization sheds light on the nanostructure and molecular aggregation of arylamine-substituted CuPc compounds, providing a link between molecular structure and device properties. These results reveal the potential of engineering CuPc derivatives as dopant-free HTMs to fabricate cost-effective and highly efficient PSCs with long-term stability, and pave the way to their commercial-scale manufacturing. More generally, this case demonstrates how an integrated approach based on rational design and computational modeling can guide and anticipate the synthesis of new classes of materials to achieve specific functions in complex device structures.
研究领域:
材料科学
·
可再生能源
·
光伏技术
·
化学
·
纳米技术
✓ 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）