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Zhou Y, Zhao X, Chen J, Gao M, He Z, Wang S, Wang C. Ternary Flash Memory with a Carbazole-Based Conjugated Copolymer: WS 2 Composites as Active Layers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:3113-3121. [PMID: 35239348 DOI: 10.1021/acs.langmuir.1c03089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
For nonvolatile memory devices, the design and synthesis of their substrate materials are very important. Due to the versatility and large-area fabrication of the low-temperature spin coating process, organic/inorganic nanomaterials as active layers of memory devices have been deeply studied. Inorganic nanoparticles can engage in interactions with polymers via external voltage. WS2 NPs have a large specific surface area and good conductivity. They can be used as the charge trap center in the active layer, which is conducive to the charge transfer in the active layer. Poly[2,7-9-(9-heptadecanyl)-9H-carbazole-co-benzo[4,5] imidazole[2,1-α] isoindol-11-one] (PIIO) was synthesized via the Suzuki coupling reaction. ITO/PIIO/Al and ITO/PIIO:WS2 NP/Al devices were prepared by the spin coating method and vacuum evaporation technology. All devices showed tristable switching behavior. The influence of the WS2 mass fraction on memory performance was studied. The device composite with 6 wt % WS2 NPs showed the best storage features. The OFF/ON1/ON2 current ratio was 1: 1.11 × 101: 2.03 × 104, and the threshold voltage Vth1/Vth2 was -0.60 V/-1.05 V. The device is steady for 12,000 s in three states-high-resistance state (HRS), intermediate state (IRS), and low-resistance state (LRS). After reading 3500 times, the switch-state current displayed no obvious attenuation. This work shows that the polymer and its composites have broad prospects in next-generation nonvolatile storage.
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Affiliation(s)
- Yijia Zhou
- School of Chemical Engineering and Materials, Heilongjiang University, Harbin 150080, P. R. China
| | - Xiaofeng Zhao
- School of Electronic Engineering, Heilongjiang University, Harbin 150080, P. R. China
| | - Jiangshan Chen
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, P. R. China
| | - Meng Gao
- School of Chemical Engineering and Materials, Heilongjiang University, Harbin 150080, P. R. China
| | - Zhaohua He
- School of Chemical Engineering and Materials, Heilongjiang University, Harbin 150080, P. R. China
| | - Shuhong Wang
- School of Chemical Engineering and Materials, Heilongjiang University, Harbin 150080, P. R. China
| | - Cheng Wang
- School of Chemical Engineering and Materials, Heilongjiang University, Harbin 150080, P. R. China
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510640, P. R. China
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Voet ARD, Tame JRH. Protein-templated synthesis of metal-based nanomaterials. Curr Opin Biotechnol 2017; 46:14-19. [DOI: 10.1016/j.copbio.2016.10.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 10/24/2016] [Indexed: 01/07/2023]
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Zeth K, Hoiczyk E, Okuda M. Ferroxidase-Mediated Iron Oxide Biomineralization: Novel Pathways to Multifunctional Nanoparticles. Trends Biochem Sci 2016; 41:190-203. [DOI: 10.1016/j.tibs.2015.11.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Revised: 11/20/2015] [Accepted: 11/24/2015] [Indexed: 11/29/2022]
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García-Prieto A, Alonso J, Muñoz D, Marcano L, Abad Díaz de Cerio A, Fernández de Luis R, Orue I, Mathon O, Muela A, Fdez-Gubieda ML. On the mineral core of ferritin-like proteins: structural and magnetic characterization. NANOSCALE 2016; 8:1088-1099. [PMID: 26666195 DOI: 10.1039/c5nr04446d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
It is generally accepted that the mineral core synthesized by ferritin-like proteins consists of a ferric oxy-hydroxide mineral similar to ferrihydrite in the case of horse spleen ferritin (HoSF) and an oxy-hydroxide-phosphate phase in plant and prokaryotic ferritins. The structure reflects a dynamic process of deposition and dissolution, influenced by different biological, chemical and physical variables. In this work we shed light on this matter by combining a structural (High Resolution Transmission Electron Microscopy (HRTEM) and Fe K-edge X-ray Absorption Spectroscopy (XAS)) and a magnetic study of the mineral core biomineralized by horse spleen ferritin (HoSF) and three prokaryotic ferritin-like proteins: bacterial ferritin (FtnA) and bacterioferritin (Bfr) from Escherichia coli and archaeal ferritin (PfFtn) from Pyrococcus furiosus. The prokaryotic ferritin-like proteins have been studied under native conditions and inside the cells for the sake of preserving their natural attributes. They share with HoSF a nanocrystalline structure rather than an amorphous one as has been frequently reported. However, the presence of phosphorus changes drastically the short-range order and magnetic response of the prokaryotic cores with respect to HoSF. The superparamagnetism observed in HoSF is absent in the prokaryotic proteins, which show a pure atomic-like paramagnetic behaviour attributed to phosphorus breaking the Fe-Fe exchange interaction.
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Affiliation(s)
- A García-Prieto
- Dpto. de Física Aplicada I, Universidad del País Vasco - UPV/EHU, 48013 Bilbao, Spain and BCMaterials, Parque tecnológico de Zamudio, 48160 Derio, Spain.
| | - J Alonso
- BCMaterials, Parque tecnológico de Zamudio, 48160 Derio, Spain. and Department of Physics, University of South Florida, Tampa, FL 33647, USA
| | - D Muñoz
- Dpto. de Inmunología, Microbiología y Parasitologa, Universidad del País Vasco - UPV/EHU, 48940 Leioa, Spain and Dpto. de Electricidad y Electrónica, Universidad del País Vasco - UPV/EHU, 48940 Leioa, Spain
| | - L Marcano
- Dpto. de Electricidad y Electrónica, Universidad del País Vasco - UPV/EHU, 48940 Leioa, Spain
| | - A Abad Díaz de Cerio
- Dpto. de Inmunología, Microbiología y Parasitologa, Universidad del País Vasco - UPV/EHU, 48940 Leioa, Spain and Dpto. de Electricidad y Electrónica, Universidad del País Vasco - UPV/EHU, 48940 Leioa, Spain
| | | | - I Orue
- SGIker, Universidad del País Vasco UPV/EHU, 48940 Leioa, Spain
| | - O Mathon
- European Synchrotron Radiation Facility, 38000 Grenoble, France
| | - A Muela
- BCMaterials, Parque tecnológico de Zamudio, 48160 Derio, Spain. and Dpto. de Inmunología, Microbiología y Parasitologa, Universidad del País Vasco - UPV/EHU, 48940 Leioa, Spain
| | - M L Fdez-Gubieda
- BCMaterials, Parque tecnológico de Zamudio, 48160 Derio, Spain. and Dpto. de Electricidad y Electrónica, Universidad del País Vasco - UPV/EHU, 48940 Leioa, Spain
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Voet ARD, Noguchi H, Addy C, Zhang KYJ, Tame JRH. Biomineralization of a Cadmium Chloride Nanocrystal by a Designed Symmetrical Protein. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Voet ARD, Noguchi H, Addy C, Zhang KYJ, Tame JRH. Biomineralization of a Cadmium Chloride Nanocrystal by a Designed Symmetrical Protein. Angew Chem Int Ed Engl 2015; 54:9857-60. [DOI: 10.1002/anie.201503575] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Revised: 05/24/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Arnout R. D. Voet
- Structural Bioinformatics Team, Division of Structural and Synthetic Biology, Center for Life Science Technologies, RIKEN, 1‐7‐22, Suehiro, Tsurumi, Yokohama, 230‐0045 (Japan)
| | - Hiroki Noguchi
- Drug Design Laboratory, Yokohama City University, 1‐7‐29, Suehiro, Tsurumi, Yokohama, 230‐0045 (Japan)
| | - Christine Addy
- Drug Design Laboratory, Yokohama City University, 1‐7‐29, Suehiro, Tsurumi, Yokohama, 230‐0045 (Japan)
| | - Kam Y. J. Zhang
- Structural Bioinformatics Team, Division of Structural and Synthetic Biology, Center for Life Science Technologies, RIKEN, 1‐7‐22, Suehiro, Tsurumi, Yokohama, 230‐0045 (Japan)
| | - Jeremy R. H. Tame
- Drug Design Laboratory, Yokohama City University, 1‐7‐29, Suehiro, Tsurumi, Yokohama, 230‐0045 (Japan)
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Solid-binding peptides: smart tools for nanobiotechnology. Trends Biotechnol 2015; 33:259-68. [PMID: 25796487 DOI: 10.1016/j.tibtech.2015.02.005] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 02/15/2015] [Accepted: 02/23/2015] [Indexed: 12/12/2022]
Abstract
Over the past decade, solid-binding peptides (SBPs) have been used increasingly as molecular building blocks in nanobiotechnology. These peptides show selectivity and bind with high affinity to the surfaces of a diverse range of solid materials including metals, metal oxides, metal compounds, magnetic materials, semiconductors, carbon materials, polymers, and minerals. They can direct the assembly and functionalisation of materials, and have the ability to mediate the synthesis and construction of nanoparticles and complex nanostructures. As the availability of newly synthesised nanomaterials expands rapidly, so too do the potential applications for SBPs.
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Inoue I, Watanabe K, Yamauchi H, Ishikawa Y, Yasueda H, Uraoka Y, Yamashita I. Biological construction of single-walled carbon nanotube electron transfer pathways in dye-sensitized solar cells. CHEMSUSCHEM 2014; 7:2805-2810. [PMID: 25111295 DOI: 10.1002/cssc.201402514] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Indexed: 06/03/2023]
Abstract
We designed and mass-produced a versatile protein supramolecule that can be used to manufacture a highly efficient dye-sensitized solar cell (DSSC). Twelve single-walled carbon-nanotube (SWNT)-binding and titanium-mineralizing peptides were genetically integrated on a cage-shaped dodecamer protein (CDT1). A process involving simple mixing of highly conductive SWNTs with CDT1 followed by TiO2 biomineralization produces a high surface-area/weight TiO2 -(anatase)-coated intact SWNT nanocomposite under environmentally friendly conditions. A DSSC with a TiO2 photoelectrode containing 0.2 wt % of the SWNT-TiO2 nanocomposite shows a current density improvement by 80% and a doubling of the photoelectric conversion efficiency. The SWNT-TiO2 nanocomposite transfers photon-generated electrons from dye molecules adsorbed on the TiO2 to the anode electrode swiftly.
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Affiliation(s)
- Ippei Inoue
- Frontier Research Labs., Institute for Innovation, Ajinomoto Co., Inc. (Japan)
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