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Zhibin Guan教授学术报告(2013-04-17)

( 2013-04-16 )
 

报告题目

Bioinspired Design of Dynamic and Self-Healing Polymers

报告时间

2013年4月17日(星期三)上午10:00

报告地点

东区材料楼化学与材料科学学院5楼会议室

报告摘要

 

报告人

Prof. Zhibin Guan,美国加州大学Irvine分校

报告人简介:

Prof. Zhibin Guan,美国加州大学Irvine分校教授。在北京大学获得学士与硕士学位后,于1991年赴美国深造,并于1994年获得北卡罗莱纳大学的博士学位。博士毕业后,进入加州理工学院从事博士后研究,1995年加入美国杜邦中央研究实验室,任化学研究员,后晋升为高级研究化学家。2000年,他加入加州大学Irvine分校化学系担任助理教授,2004年晋升为副教授,2006年被聘为教授。曾获得多个奖项,包括贝克曼青年研究员奖,美国国家科学基金会职业奖,卡米尔•德雷福斯教师学者奖,红堡贝塞尔研究奖。近日,他当选为美国科学促进协会(AAAS)会士。研究兴趣涵盖广义的有机、生物及高分子材料化学。

代表性论文

1.    “Modular Design in Natural and Biomimetic Soft Materials” Kushner, A. M.; Guan, Zhibin. Angew. Chem. Int. Ed. 2011, 50, 9026 – 9057.

2.    “Computational and single-molecule force studies of a macro domain protein reveal a key molecular determinant for mechanical stability” Guzman, D.; Randall, A. Z.; Baldi, P.; and Guan, Zhibin. Proc. Nat. Acad. Sci. U. S. A. 2010, 107, 1989-1994.

3.    “A Biomimetic Modular Polymer with Tough and Adaptive Properties” Kushner, A. M.; Vossler, J.; Williams, G. A., and Guan, Zhibin. J. Am. Chem. Soc. 2009, 131, 8766-8768.

4.    “Multiphase Design of Stiff and Autonomic Self-Healing Polymers” Chen, Y.L.; Kushner, A. M.; Williams, G. A.; Guan, Zhibin. Nature Chem. 2012, 4, 467.

5.    “Self-Healing Supramolecular Block Copolymers” Hentschel, J.; Kushner, A. M.; Ziller, J.; Guan, Z. Angew. Chem., Int. Ed. 2012, 51, 10561.

6.    “Olefin Metathesis for Effective Polymer Healing via Dynamic Exchange of Strong Carbon-Carbon Double Bonds” Lu, Y.-X.; Guan, Z. J. Am. Chem. Soc. 2012, 134, 14226.

 

 

Bioinspired Design of Dynamic and Self-Healing Polymers

 

Professor Zhibin Guan (zguan@uci.edu)

Department of Chemistry, University of California, Irvine, CA 92697-2025, USA

 

Abstract:

One research goal of my group is attempting to merge supramolecular chemistry and material chemistry for the design of advanced polymeric materials with dynamic properties. Many natural biopolymers not only have advanced mechanical properties such as high modulus, toughness, and elasticity, but also exhibit dynamic properties. Inspired by Nature, we have designed a series of biomimetic modular polymers with folded nano-domains as the repeat units. These new material manifest an exciting combination of key mechanical, as well as adaptive, properties that have until now proven difficult to achieve in man-made systems. Single molecule force was used to correlate the exceptional mechanical properties with their molecular structures. Recently, we developed a biomimetic multiphase design of stiff and spontaneous self-healing polymers. In contrast to previous designs, our system spontaneously self-heals as a single-component solid at ambient conditions without the need of any external stimulus, healing agent, plasticizer, or solvent.  Most recently, we reported self-healing polymer design by dynamic covalent bond exchange via olefin metathesis. In this presentation, I will discuss the design, synthesis, and single molecule and macroscopic property studies of our biomimetic dynamic polymers, including stiff and autonomic self-healing systems.

 

    

 

References:

1.     “Modular Design in Natural and Biomimetic Soft Materials” Kushner, A. M.; Guan, Zhibin. Angew. Chem. Int. Ed. 2011, 50, 9026 – 9057.

2.    “Computational and single-molecule force studies of a macro domain protein reveal a key molecular determinant for mechanical stability” Guzman, D.; Randall, A. Z.; Baldi, P.; and Guan, Zhibin. Proc. Nat. Acad. Sci. U. S. A. 2010, 107, 1989-1994.

3.    “A Biomimetic Modular Polymer with Tough and Adaptive Properties” Kushner, A. M.; Vossler, J.; Williams, G. A., and Guan, Zhibin. J. Am. Chem. Soc. 2009, 131, 8766-8768.

4.    “Multiphase Design of Stiff and Autonomic Self-Healing Polymers” Chen, Y.L.; Kushner, A. M.; Williams, G. A.; Guan, Zhibin. Nature Chem. 2012, 4, 467.

5.    Self-Healing Supramolecular Block Copolymers” Hentschel, J.; Kushner, A. M.; Ziller, J.; Guan, Z. Angew. Chem., Int. Ed. 2012, 51, 10561.

6.    Olefin Metathesis for Effective Polymer Healing via Dynamic Exchange of Strong Carbon-Carbon Double Bonds” Lu, Y.-X.; Guan, Z. J. Am. Chem. Soc. 2012, 134, 14226.

 

 


 
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