Reversible conformation-driven order-order transition of peptide-mimic poly(n-alkyl isocyanate) in thin films via selective solvent-annealing
SCIE
SCOPUS
- Title
- Reversible conformation-driven order-order transition of peptide-mimic poly(n-alkyl isocyanate) in thin films via selective solvent-annealing
- Authors
- Yecheol Rho; Joonkeun Min; Jinhwan Yoon; Byungcheol Ahn; Sungmin Jung; Kyungtae Kim; Priyank N Shah; Jae-Suk Lee; Ree, M
- Date Issued
- 2012-10
- Publisher
- Nature publishing Group
- Abstract
- We report for the first time the conformational and structural details of peptide-mimic poly(n-hexyl isocyanate) (PHIC). PHIC is a representative poly(n-alkyl isocyanate)s, which have received significant attention because of their unique stiff chain characteristics and potential applications in various fields. A well-ordered hexagonal close packing structure of PHIC with 8(3) helical conformation was clearly observed in the nanoscale thin films that were selectively annealed with carbon disulfide (CS2). A well-ordered multi-bilayer structure of the polymer with beta-sheet conformation was also clearly formed in the films that were selectively annealed with toluene. In addition, a fully reversible transformation between these two self-assembled structures was demonstrated by consecutive annealings with CS2 and toluene. NPG Asia Materials (2012) 4, e29; doi:10.1038/am.2012.54; published online 26 October 2012
- Keywords
- conformation change; hexagonal close packing structure; multi-bilayer structure; peptide-mimic poly(n-alkyl isocyanate); reversible order-order transition; selective solvent annealing; self-assembly; X-RAY-SCATTERING; PROPYLENE-OXIDE; HELICAL POLYMERS; BLOCK-COPOLYMER; CARBON-DIOXIDE; POLYMERIZATION; POLYISOCYANATES; DERIVATIVES; DICHROISM; CATALYSTS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/16227
- DOI
- 10.1038/AM.2012.54
- ISSN
- 1884-4049
- Article Type
- Article
- Citation
- Nature publishing Group Asia Materials, vol. 4, page. E29, 2012-10
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