Synthesis, morphology, and electrical memory application of oligosaccharide-based block copolymers with π-conjugated pyrene moieties and their supramolecules
| العنوان: | Synthesis, morphology, and electrical memory application of oligosaccharide-based block copolymers with π-conjugated pyrene moieties and their supramolecules |
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| المؤلفون: | Takuya Isono, Toyoji Kakuchi, Wen-Chang Chen, Yougen Chen, Wen-Ya Lee, Han-Sheng Sun, Toshifumi Satoh, Yu-Cheng Chiu |
| المصدر: | Polymer Chemistry. 7:1249-1263 |
| بيانات النشر: | Royal Society of Chemistry (RSC), 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Electron mobility, Materials science, Organic field-effect transistor, Polymers and Plastics, Organic Chemistry, Bioengineering, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Biochemistry, Acceptor, 0104 chemical sciences, Pentacene, chemistry.chemical_compound, Polymerization, Chemical engineering, chemistry, Polymer chemistry, Copolymer, Electret, Thin film, 0210 nano-technology |
| الوصف: | We report the synthesis, morphology, and field effect transistor memory application of maltoheptaose-based block copolymers, maltoheptaose-block-poly(1-pyrenylmethyl methacrylate) (MH-b-PPyMA), and their supramolecules with (4-pyridyl)-acceptor-(4-pyridyl), MH(4Py-Acceptor-4Py)x-b-PPyMA. MH-b-PPyMA was prepared by the combination of the t-Bu-P4-catalyzed group transfer polymerization and the Cu(I)-catalyzed azide–alkyne cycloaddition reaction. After the thermal annealing process, the MH-b-PPyMA bulk sample underwent microphase separation to form the sub-10 nm periodic self-assembled nanostructure. The self-assembled morphologies transform from the hexagonal cylinder packing to the body-centered cubic sphere arrangement and the disordered spherical nanodomain with the increase of the PPyMA segment length. On the contrary, only the spherical nanodomain was observed in the thermo-annealed thin film samples of both MH-b-PPyMA and MH(4Py-Acceptor-4Py)x-b-PPyMA. The electrical characteristics of the p-type pentacene-based OFET memory device were studied using the thermo-annealed polymer thin film as the electret layer. The MH(4Py-Acceptor-4Py)x-b-PPyMA-based organic field effect transistor (OFET) devices had the high hole mobility of 0.20–1.08 cm2 V−1 s−1 and the ON/OFF current (ION/IOFF) ratio of 107–108, in which the acceptor of the benzo[c][1,2,5]thiadiazole (BT) based device possessed the higher hole mobility than that of the isoindigo-based one due to the more ordered packing pentacene crystals. The memory window (ΔVTH) of the supramolecule-based device was increased with enhancing the 4Py-Acceptor-4Py blending composition, and that of the MH(4Py-BT-4Py)1.5-b-PPyMA10-based device had the largest ΔVTH of ca. 9 V, a long-term retention time greater than 104 s and the high ION/IOFF memory ratio of 106–107 (reading at Vg = 0 V) for more than 100 programming/erasing cycles. Our results demonstrate that the bio-related block copolymers and their supramolecular thin film could be used as electret layers for high-performance nonvolatile flash green memory devices. |
| تدمد: | 1759-9962 1759-9954 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::ae3d13b92684a37da7aa5d9f979445f5 https://doi.org/10.1039/c5py01697e |
| رقم الأكسشن: | edsair.doi...........ae3d13b92684a37da7aa5d9f979445f5 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17599962 17599954 |
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