[1] Pohang Univ Sci & Technol, Natl Creat Res Initiat Ctr Block Copolymer Self A, Dept Chem Engn, Pohang 790784, Kyungbuk, South Korea
[2] Pohang Univ Sci & Technol, Polymer Res Inst, Pohang 790784, Kyungbuk, South Korea
[3] Natl Taiwan Univ, Inst Polymer Sci & Engn, Taipei 10617, Taiwan