화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터)
권호 43권 2호
발표분야 고분자구조 및 물성: 극한물성소재
제목 Phase Behavior of Adenine-Containing Block Copolymer
초록 Nucleobase-containing polymers have received great attention for their complementary multiple hydrogen bonding between nucleobases. In this study, we successfully synthesized adenine-containing block copolymers, poly(9-(4-vinylbenzyl)adenine)-block-polystyrene (PVBA-b-PS), using RAFT polymerization in polar solvents, and characterized them by SEC, and 1H NMR. The phase behavior of PVBA-b-PS with various volume fractions of PS block (fPS) was investigated via SAXS and TEM. With increasing fPS from 0.1 to 0.8, BCC spheres of PVBA, HEX cylinders of PVBA, lamellae, and HEX cylinders of PVBA were observed. Interestingly, PVBA-b-PS with fPS = 0.75 showed asymmetric lamellar microdomains. We also prepared thin film of PVBA-b-PS on a substrate as a template for spatial arrangement of gold nanoparticles (AuNPs). AuNPs were selectively sequestered into PVBA microdomains through the complementary hydrogen bonding between thymine and adenine units.
저자 김은설, 김필곤, 김진곤
소속 포항공대
키워드 nucleobase-containing block copolymer; phase behavior; selective sequestering of gold nanoparticles
E-Mail jkkim@postech.ac.kr