Facile and Efficient Modification of Polystyrene-block-poly(methyl methacrylate) for Achieving Sub-10 nm Feature Size
| Autor: | Ken Miyagi, Takuya Yamamoto, Akiyoshi Yamazaki, Kohei Yoshida, Toshifumi Satoh, Takuya Isono, Lin Tian, Kenji Tajima, Hiroaki Mamiya |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Polymers and Plastics Scattering Organic Chemistry 02 engineering and technology Degree of polymerization 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Inorganic Chemistry Polystyrene-block-poly(methyl methacrylate) chemistry.chemical_compound Nanolithography chemistry Chemical engineering Bulk samples Materials Chemistry Copolymer Methyl methacrylate 0210 nano-technology |
| Zdroj: | Macromolecules. 51:8064-8072 |
| ISSN: | 1520-5835 0024-9297 |
| Popis: | Nanofabrication based on block copolymer self-assembly is one of the most promising methods for producing nanopatterns with a sub-10 nm feature size. Although polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) has been widely studied as a suitable template for nanofabrication, the insufficient incompatibility between the PS and PMMA blocks makes it difficult to achieve a microphase separation with the domain spacing of less than ca. 20 nm. We now present a simple and efficient method for the postpolymerization modification of PS-b-PMMA for effectively increasing the incompatibility between the two blocks, so that microphase separation can be achieved even at a low degree of polymerization. The ester–amide exchange reactions of PS-b-PMMA with primary and secondary amines were performed to introduce a small number of methacrylamides into the PMMA block to increase its hydrophilicity. The results of small-angle X-ray scattering measurements performed on bulk samples showed that the modified PS-b-PMMA se... |
| Databáze: | OpenAIRE |
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