2009 Fiscal Year Final Research Report
Orientation of Microdomains of Block Copolymers at the Surfaces
| Project/Area Number |
20750090
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Polymer chemistry
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| Research Institution | Nagoya University |
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Principal Investigator |
DAISUKE Kawaguchi Nagoya University, 大学院・工学研究科, 講師 (70362267)
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| Project Period (FY) |
2008 – 2009
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| Keywords | ブロック共重合体 / 表面 / 原子間力顕微鏡 |
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| Research Abstract |
Poly(4-tert-butylstyrene-block-4-tert-butoxystyrene), BO, was prepared by a living anionic polymerization. The BO has very bulky and hydrophobic substituent in both components. The BO films with various thicknesses were prepared by spin-coating method from toluene solutions. An alternating lamellar structure oriented normal to the surface was observed at the surface of the BO film with thickness more than 150 nm, where the appearance of both B and O components were confirmed by XPS measurements. It is revealed that the ordered surface structure is caused by nanophase separation of BO clearly proved by hydrolyzed surface structures. Another aspect of this work is the structure of BO block copolymer after hydrolysis reaction. O component can be easily converted into poly(4-hydroxystyrene) which has an ability to form a hydrogen bond. Moreover, it has been turned out that the control of the hydrolyzed layer thickness is possible by choosing the solvents in the reaction. This hydrophilic-hydrophobic nanopatterning is expected to be useful in a template of assembling nanoparticles and peptides.
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