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Self‐Collapsing of Single Molecular Poly‐Propylene Oxide (PPO) in a 3D DNA Network
Author(s) -
Wu Fen,
Zhao Zhiyong,
Chen Chun,
Cao Tianyang,
Li Chuang,
Shao Yu,
Zhang Yiyang,
Qiu Dong,
Shi Qian,
Fan QingHua,
Liu Dongsheng
Publication year - 2018
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201703426
Subject(s) - propylene oxide , materials science , polypropylene , nucleation , oxide , polymer , rheology , copolymer , chemical engineering , small angle x ray scattering , block (permutation group theory) , dna , polymer chemistry , composite material , scattering , chemistry , organic chemistry , ethylene oxide , optics , physics , engineering , metallurgy , biochemistry , geometry , mathematics
On the basis of DNA self‐assembly, a thermal responsive polymer polypropylene oxide (PPO) is evenly inserted into a rigid 3D DNA network for the study of single molecular self‐collapsing process. At low temperature, PPO is hydrophilic and dispersed uniformly in the network; when elevating temperature, PPO becomes hydrophobic but can only collapse on itself because of the fixation and separation of DNA rigid network. The process has been characterized by rheological test and Small Angle X‐Ray Scattering test. It is also demonstrated that this self‐collapsing process is reversible and it is believed that this strategy could provide a new tool to study the nucleation‐growing process of block copolymers.