Self‐Collapsing of Single Molecular Poly‐Propylene Oxide (PPO) in a 3D DNA Network |
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| Authors: | Fen Wu Zhiyong Zhao Chun Chen Tianyang Cao Chuang Li Yu Shao Yiyang Zhang Dong Qiu Qian Shi Qing‐Hua Fan Dongsheng Liu |
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| Affiliation: | 1. College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China;2. Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, China;3. Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, China;4. State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, China |
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| Abstract: | 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. |
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| Keywords: | block copolymers DNA nucleation poly(propylene oxide) self‐collapse |
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