Reversible conformation-driven order-order transition of peptide-mimic poly(n-alkyl isocyanate) in thin films via selective solvent-annealing

Yecheol Rho; Joonkeun Min; Jinhwan Yoon; Byungcheol Ahn; Sungmin Jung; Kyungtae Kim; Priyank N. Shah; Jae Suk Lee; Moonhor Ree

doi:10.1038/am.2012.54

Reversible conformation-driven order-order transition of peptide-mimic poly(n-alkyl isocyanate) in thin films via selective solvent-annealing

Yecheol Rho, Joonkeun Min, Jinhwan Yoon, Byungcheol Ahn, Sungmin Jung, Kyungtae Kim, Priyank N. Shah, Jae Suk Lee, Moonhor Ree

Chemical Engineering and Materials Science

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33 Scopus citations

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 β-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.

Original language	English (US)
Article number	e29
Journal	NPG Asia Materials
Volume	4
Issue number	10
DOIs	https://doi.org/10.1038/am.2012.54
State	Published - Oct 2012

Bibliographical note

Funding Information:
This study was supported by the National Research Foundation of Korea (Doyak project (2011-0028678) and the Center for Electro-Photo Behaviors in Advanced Molecular Systems (2010-0001784)), the Program for Integrated Molecular System of GIST and the Ministry of Education, Science and Technology (MEST) (BK21 Program and World Class University Program R31-2008-000-10059-0 and R31-20008-000-10026-0). The synchrotron X-ray scattering measurements at the Pohang Accelerator Laboratory were supported by MEST and POSCO Company, and POSTECH Foundation.

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

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title = "Reversible conformation-driven order-order transition of peptide-mimic poly(n-alkyl isocyanate) in thin films via selective solvent-annealing",

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 β-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.",

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",

author = "Yecheol Rho and Joonkeun Min and Jinhwan Yoon and Byungcheol Ahn and Sungmin Jung and Kyungtae Kim and Shah, {Priyank N.} and Lee, {Jae Suk} and Moonhor Ree",

note = "Funding Information: This study was supported by the National Research Foundation of Korea (Doyak project (2011-0028678) and the Center for Electro-Photo Behaviors in Advanced Molecular Systems (2010-0001784)), the Program for Integrated Molecular System of GIST and the Ministry of Education, Science and Technology (MEST) (BK21 Program and World Class University Program R31-2008-000-10059-0 and R31-20008-000-10026-0). The synchrotron X-ray scattering measurements at the Pohang Accelerator Laboratory were supported by MEST and POSCO Company, and POSTECH Foundation.",

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AU - Kim, Kyungtae

AU - Shah, Priyank N.

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Reversible conformation-driven order-order transition of peptide-mimic poly(n-alkyl isocyanate) in thin films via selective solvent-annealing

Abstract

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Keywords

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