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Bio-inspired Anti-Icing Materials

Speaker

Jianjun Wang, Institute of Chemistry, Chinese Academy of Sciences

Time

2018.10.16 14:00-15:00

Venue

601,Pao Yue-Kong Library

Abstract

Understanding and controlling ice formation are of great importance in both fundamental research and practical applications. However, our understanding of ice formation is far from satisfactory. Nature has unique ways in regulating ice formation, for example, antifreeze proteins (AFPs) protect organisms from freezing damage by regulating ice formation via controlling the arrangement of hydroxyl groups. In this talk, I will first discuss our investigation into the fundamentals of AFPs in regulating ice nucleation via revealing the Janus effect of AFPs on ice nucleation. We found the properties of the interfacial water are essential for AFPs in controlling ice formation, i.e., the structure and the dynamics of the interfacial water. Inspired by AFPs, we have synthesized a series of polymeric materials for regulating ice formation, and applications of these materials for the cryopreservation of cells as well as anti-icing coating with ultra-low ice adhesion will be presented.

References

  1. Jie Liu, Chongqin Zhu, Kai Liu, Ying Jiang, Yanlin Song, Joseph S. Francisco, Xiao Cheng Zeng, and Jianjun Wang, Proc. Natl Acad. Sci. U.S.A. 2017, 114, 11285-11290.
  2. Shuwang Wu, Chongqin Zhu, Zhiyuan He, Han Xue, Qingrui Fan, Yanlin Song, Joseph S. Francisco, Xiao Cheng Zeng & Jianjun Wang, Nat. Commun. 2017, 8, 15154.
  3. Hongya Geng, Bowen Yao, Jiajia Zhou, Kai Liu, Guoying Bai, Wenbo Li, Yanlin Song, Gaoquan Shi, Masao Doi, and Jianjun Wang, J. Am. Chem. Soc. 2017, 139, 12517−12523.
  4. Hongya Geng, Xing Liu, Guosheng Shi, Guoying Bai, Ji Ma, Jingbo Chen, Zhuangyuan Wu, Yanlin Song, Haiping Fang and Jianjun Wang, Angew. Chem. Int. Ed. 2017, 56, 997-1001.
  5. Kai Liu, Chunlei Wang, Ji Ma, Guosheng Shi, Xi Yao, Haiping Fang, Yanlin Song and Jianjun Wang, Proc. Natl Acad. Sci. U.S.A. 2016, 113, 14739-14744.

Keywords

Ice Formation, Anti-Icing Coating, Cryopreservation

Bio

Jianjun Wang, was born in Zhejiang China in 1976. He obtained his Ph.D degree at University of Mainz (Supervisor: Prof. Dr. W. Knoll) in 2006. After the postdoctoral research, he became a project leader at Max-Planck Institute for Polymer Research. Since 2010, he has been a professor at the Institute of Chemistry, Chinese Academic of Sciences. Dr. Wang has carried out research work in colloid and surface chemistry, solid state chemistry and polymer physics. In particular, he has performed systematic work in polymeric materials science. His current research is focused on the molecular level understanding of ice formation and its applications such as cryopreservation of cells, organs and tissues, and anti-icing coatings with ultra-low ice adhesion. Dr. Wang is currently an Advisory Board member for Advanced Materials Interfaces.

Representative Publications

  1. Jie Liu, Chongqin Zhu, Kai Liu, Ying Jiang, Yanlin Song, Joseph S. Francisco, Xiao Cheng Zeng, and Jianjun Wang, Distinct ice patterns on solid surfaces with various wettabilities; Proc. Natl Acad. Sci. U.S.A. 2017, 114, 11285-11290.
  2. Hongya Geng, Xing Liu, Guosheng Shi, Guoying Bai, Ji Ma, Jingbo Chen, Zhuangyuan Wu, Yanlin Song, Haiping Fang and Jianjun Wang, Graphene oxide restricts growth and recrystallization of ice crystals; Angew. Chem. Int. Ed. 2017, 56, 997-1001.
  3. Kai Liu, Chunlei Wang, Ji Ma, Guosheng Shi, Xi Yao, Haiping Fang, Yanlin Song and Jianjun Wang, Janus effect of antifreeze proteins on ice nucleation; Proc. Natl Acad. Sci. U.S.A. 2016, 113, 14739-14744.