COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Jiayu Li,Xianbo Meng,Jian Zhou,Songhao Zhao,Shuhong Wang,Cheng Wang,Zhuang Cai,Yanjun Zhang
In recent years, designing advanced functional materials that can be used in organic memory devices has become a hot research topic. Among them, polymers have attracted much attention for having at least two stable resistive states. This work reports on the synthesis of various donor-acceptor (D-A) conjugated polymers based on quinoxaline via the Suzuki reaction. ITO/polymer/Al sandwich structure device were prepared with polymer as the active layer through solution spin-coating and Al as electrode by vacuum evaporation method. Among these memory devices, the memory devices based on the polymer (PFQx) synthesized by fluorene as the donor and quinoxaline as the acceptor exhibit excellent binary storage behavior. To further regulate the memory properties, we synthesize conjugated polymers (PFDQx, PFCQx, PFFQx) by modifying quinoxaline with different substituents to act as acceptors, and ternary switching behavior is shown by the memory devices made using these polymers. The PFCQx-based devices have the lowest ternary storage characteristics of V th1 (-0.9 V) and V th2 (-1.3 V) among all the devices, and the greatest switching current ratio of 10 4.6 . All these results indicate the potential application of quinoxaline-based polymers in ternary storage and also provide new ideas for the molecular design of nonvolatile memory materials.
研究领域:
材料科学
·
有机电子学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 46
·期 2
·704-713
·
IF 3.591
Feng Dou,Xiaofeng Zhao,Wanying Zhang,Yingna Zhang,Meng Gao,Jiangshan Chen,Shuhong Wang,Cheng Wang
The limited capacity of binary memory may not meet the requirements of future information storage; hence, multilevel memory is widely studied. Herein, a donor–acceptor-type polymer poly[2,7-9-(heptadecan-9-yl)-9H-carbazole-alt-7H-benzimidazo[2,1-a]benz[de]isoquinolin-7-one] (PCz–BMBI) was synthesized using the Suzuki cross-coupling reaction and characterized. The organic resistive random access memory (ORRAM) devices with a non-volatile ternary memory behavior, based on PCz–BMBI and PCz–BMBI:CuO NP active layers, were fabricated using the spin-coating technique. The I–V characteristics of the devices were studied, and the effect of the embedding ratio of CuO nanoparticles (NPs) on the memory performance of the devices was discussed. The results indicate that the switching ratios of all devices with CuO NPs embedded were improved, and their first threshold voltages were lowered. Furthermore, the devices fabricated with an embedding ratio of 7 wt% CuO NPs exhibited optimal memory performance with a current ratio of ON2/ON1/OFF (105.3 : 102.3 : 1) and low threshold voltages (−0.50 V/−1.60 V). This work provides a new route for multi-level storage materials and new ideas for the application of CuO NPs in the field of information storage.
研究领域:
材料科学
·
信息存储技术
·
有机电子学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2020
·
IF 4.469
Dechao Hu,Zhiqiang Wang,Wenshi Ma
Microencapsulated phase change materials (MEPCMs) can efficiently prevent the leakage and erosion of melting phase change materials during phase change process, which exhibit a bright industrial application prospect in the fields of thermal energy storage. Herein, a novel polyurethane (PU) microencapsulated methyl laurate was successfully fabricated via interfacial polymerization. The preparation conditions of PU-based MEPCMs were comprehensively explored, offering a systematic guidance for the tailored design of novel MEPCMs. And the experimental results indicate that the obtained PU-based MEPCMs have high latent heat storage capacity. Specially, when the core/shell mass ratio is 3:1, the melting enthalpies, freezing enthalpies, and core contents of MEPCMs reach as high as 136.2 J/g, 121.2 J/g and 75.18 %, respectively. Meantime, the resulting PU-based MEPCMs also present excellent thermal reliability and storage stability. The development of novel PU-based MEPCMs may open up a new opportunity for their wider applications in the thermal energy storage fields such as architectural coatings, refrigerated storage, and functional thermal fluids.
研究领域:
材料科学
·
热能工程
·
能量存储
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2017
·
IF 9.034
Su‐Ting Han,Liang Hu,Xiandi Wang,Ye Zhou,Yu‐Jia Zeng,Shuangchen Ruan,Caofeng Pan,Zhengchun Peng
Solution‐processed black phosphorus quantum‐dot‐based resistive random access memory is demonstrated with tunable characteristics, multilevel data storage, and ultrahigh ON/OFF ratio. Effects of the black phosphorous quantum dots layer thickness and the compliance current setting on resistive switching behavior are systematically studied. Our devices can yield a series of SET voltages and current levels, hence having the potential for practical applications in the flexible electronics industry.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
PubMed
高影响因子
Optical Materials Express
·
2022
·Vol. 12
·期 2
·845-853
·
IF 3.074
Jian Wang,Jian Wang,YanBo Pei,Hongyan Shi,Bo Gao,Suhua Luo
We reveal that polymerization degree is a significant factor that affects the holographic properties of glass-like photopolymer. By modulating polymerization degree, as well as changing the photosensitizer concentration, we fabricate multilayer PQ/PMMA photopolymer, exhibiting excellent performances in storage fidelity and reproduction resolution. A reflection geometry holographic disk system is established using the multilayer sample, in which a high storage density of 40.5GB/cm3 is realized. The reproduced images exhibit high quality with an average diffraction efficiency of 7.4 × 10−4 and average peak SNR of 27.4. This study provides a paradigm for the fabrication and holographic application of other photopolymers.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
CELLULOSE
·
2022
·Vol. 30
·期 3
·1841-1855
·
IF 6.123
Shuaib Suhaib Shuaib Adam,Niu Zixuan,Qian Zhiyi,Qi Shengyang,Yuan Weizhong
The development of phase change materials (PCMs)-based energy storage devices for both thermal and light energy has the potential to greatly enhance solar energy use efficiency, which is important in addressing the worldwide energy problem. Due to the environmentally friendly, good thermal and chemical stability, easy degradation, and good mechanical strength of ethyl cellulose, it was used to fabricate the shape-stabilized composite phase change material (ss-CPCM) with polyethylene glycol. The ss-CPCMs have a high latent enthalpy (174.33 J/g), high form stability, excellent thermal regulation abilities for both thermal energy storage and thermal insulation, and great cycle thermal performance. After adding long afterglow luminescence particles, the self-luminous ss-CPCMs were obtained. They can absorb and store visible and ultraviolet light, as well as emit green light in the dark for an extended period of time. The excellent properties of the self-luminous ss-CPCMs promise them great potential in applications, such as energy-saving, emergency lighting, furniture, smart building, and smart highway.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 42
·期 23
·19008-19019
·
IF 3.201
Yanhua Yang,Jing-Cheng Xia,Youxuan Zheng,Yingzhong Shen,Gaozhang Gou
An efficient and readily available novel asymmetric diamine monomer containing a strongly electron-donating triphenylamine moiety and a flexibility segment was designed and synthesized through a Suzuki coupling reaction. Then, two thermally stable and highly soluble polyimides (PI(TPA-PMDA) and PI(TPA-BPDA)) were prepared and characterized. The ITO/PI(TPA-PMDA)/Al memory device exhibited write-once read-many-times (WORM) memory behavior with a threshold voltage of −1.12 V, while the PI(TPA-BPDA) memory device demonstrated flash-type memory behavior with a turn-on voltage at −0.78 V and a turn-off voltage at +1.98 V. Both devices showed high ON/OFF current ratios beyond 103 and long retention times of 4 × 103 s. Space-charge limited-current (SCLC) conduction and local filament conduction governed the OFF- and ON-state current conduction of the two memory devices, respectively. The electrical memory switching behaviors were induced by a charge transfer process under an applied electric field, and the differences between the dihedral angles and dipole moments resulted in different memory types.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
OPTICS AND LASER TECHNOLOGY
·
2022
·
IF 4.939
Jian Wang,Suhua Luo
The sync-angular multiplexing by rotating medium is a simple but seldom used technique in recent years. While compared with the regular angular multiplexing, sync-angular multiplexing has the advantage to alleviate the cumulative scattering noise during recording in thick materials. Based on the experimental parameters, the available rotational angle range and spatial selectivity are studied by simulating the recording spot. Experimentally, 150 grey images are sync-angular multiplexed in a 2.0 mm thick PQ/PMMA photopolymer, resulting in an average diffraction efficiency of 0.05% and a storage density of 41.1 GB/cm 3 .
研究领域:
光学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Haohao Zhang,Zhen Kong,Xing Gao,Jianxiong Wang,Lina Tian,Yapeng Yuan,Jibin Song,Hongliang Li
Rational design of electrode materials with an excellent structure and morphology is crucial for improving electrochemical properties. Herein, various unique nanostructured Bi2S3 materials with controllable morphology were obtained through a simple and efficient oil bath reaction strategy. Bi2S3 with different morphologies can be obtained by regulating the polarity of solvent, and the lattice spacing can also be adjusted. The Bi2S3 nanomaterials obtained with ethanol as solvent (BS-3) show a three-dimensional nanoflower-like structure assembled with porous layers. The unique structure facilitates the transport of ions and accommodates the volume variation of Bi2S3 during energy storage. Consequently, BS-3 nanoflowers exhibited superior cycling stability and excellent high-rate capability for lithium storage (maintained a high capacity of 923.8 mA h g–1 after 950 cycles at 1.0 A g–1) and excellent sodium storage. We provide guidance for precise synthesis and energy storage application of Bi2S3 nanomaterials.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Yanting Du,Jiayu Li,Songhao Zhao,Haifeng Yu,Lei Ji,Shuhong Wang,Cheng Wang
Fluorinated materials have been widely utilized in optoelectronic devices. However, there has been a rare exploration of the use of fluorinated materials in polymer-based memory devices. To explore the impact of fluorinated acceptors on the storage capabilities of polymers, six donor–acceptor (D–A type) conjugated polymers were synthesized by using the Suzuki coupling reaction. Subsequently, polymers were utilized in the fabrication of basic sandwich-structured devices consisting of layers of indium–tin–oxide/polymer/aluminum (ITO/polymer/Al). Fluorinated polymers demonstrated significantly higher current switching ratios compared to non-fluorinated polymers. This increased ratio suggested an improved resolution in the readout, thus decreasing the probability of misinterpretation. It is imperative to emphasize that the poly[2-(2,3-bis(4-fluorophenyl)quinoxaline-5-yl)-9-(heptadecane-9-yl)-9H-carbazole] (PCzFQ) device exhibited exceptional performance, with an OFF:ON1:ON2 ratio as high as 1:101.8:104.7. This work supported the feasibility of introducing fluorine atoms into the acceptor unit to enhance the properties of memory devices, providing an available approach for synthesizing high-performance ternary memory materials.
研究领域:
材料科学
·
电子工程
·
化学合成
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Limin Chang,Zheng Yi,Zhaomin Wang,Limin Wang,Yong Cheng
SnO 2 is regarded to be promising for both Li-ion and Na-ion batteries. Thus, it is imperative to fabricate SnO 2 -based anode with improved lithiation reaction kinetics using simple but effective method. Herein, we develop a one-pot hydrothermal route to fabricate two-dimensional SnO 2 nanosheets and the graphene supported SnO 2 nanosheet composite with decreased SnO 2 nanosheet of about 5–10 nm. The ultrathin nanosheet structure anchored on graphene supporting can effectively accelerate the conversion/alloying reaction. Electrochemical researches demonstrate that the reaction kinetics of the lithiation/delithiation reaction can be significantly enhanced by the graphene supported SnO 2 nanosheets. As a result, a capacity of 817.2 mAh g −1 after 100 cycles in the potential window of 0.01 to 3 V are achieved at 500 mA g −1 . The full cell performance and the sodium storage performance are both demonstrated to be good. These promising results suggest that such strategy to fabricate two-dimensional SnO 2 -based anode is of great interest for next-generation Li-ion and Na-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Jing-Yuan Ma,Kai-Xuan Wang,Ming Ma,Yu Zhang
As an emerging storage medium, DNA is a crucial carrier for future data storage. DNA has a better storage density and a longer storage life than conventional storage media. However, DNA’s key limitations as a storage medium are the precision of information reading and storage stability. Herein, we designed and successfully developed a switchable DNA storage nanocomposite structure (MM-DNA/DNA’-SiO2). The composite structure employs magnetic microspheres (MMs) based on Fe3O4 nanoparticles as the DNA carrier for storing information (MM-DNA) and silicon dioxide nanoparticles modified with complementary strands as the protective outer layer (DNA’-SiO2), and its switchability and DNA sequence reading accuracy were both validated in this study. This method provides a novel nanostructure medium and technical proposal for efficient DNA storage with potential application value.
研究领域:
纳米技术
·
生物技术
·
数据存储
·
材料科学
✓ 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）