From molecular designs to dynamic chemical systems:Adding new functions to existing electronic systems
소속 :
연사 : Jiheong Kang(Stanford University, USA)
일시 : 2018-08-28 16:30 ~
장소 : 500-L311
Complex chemical systems, such as living organisms, have highly organized structures based on
well designed molecules through dynamic interactions. In contrast, synthetic systems exhibit
simpler properites. In this talk, I will specifically focus on rational molecular design principles
and the utilizations of such principles for the creation of dynamic and complex artificial chemical
systems, possesing new functions that cannot be realized by conventional approaches. Owing to
the remarkable progress over the past two decades in supramolecualr chemistry, a variety of
complex nanostructures can be designed and tailored through thermodynamic control. Despite
recent advances, chemical systems under such thermodynamic control are still short of
functionality and complexity comparing to living systems. In order to create dynamic and
complex chemical systems that surpass our living matters, non-covalent interactions
(supramolecular interactions) should be more precisely controlled and have non-equilibriated states.
In this regard, this presentation begins with a rational molecular design strategy for the
realization of precise non-covalent polymerization in solution[1], [2]. I believe that this achievement
steps forward towards dynamic functional chemical systems. From the second part of my talk, a
new class of polymer design capable of forming dynamically crosslinked complex network will
be discussed[3]. Multiple distinct crosslinking bonds with different bonding strength exist in the
network. Such newly observed network realized unsual mechanical properties such as high
stretchability, high toughness and autonmous self-healability, whereas their mechanical responses
were similar to those of human skin. Lastly, unprecedented applications in electronic systems will
be presented using this new energy dissipating chemical system[4],[5]. Integration of the dynamic
chemical system with electronic materials successfully imparts its intrinsic dynamicity to
electronics such that mechanically tough and self-healable electronic skins are developed for the
first time.
well designed molecules through dynamic interactions. In contrast, synthetic systems exhibit
simpler properites. In this talk, I will specifically focus on rational molecular design principles
and the utilizations of such principles for the creation of dynamic and complex artificial chemical
systems, possesing new functions that cannot be realized by conventional approaches. Owing to
the remarkable progress over the past two decades in supramolecualr chemistry, a variety of
complex nanostructures can be designed and tailored through thermodynamic control. Despite
recent advances, chemical systems under such thermodynamic control are still short of
functionality and complexity comparing to living systems. In order to create dynamic and
complex chemical systems that surpass our living matters, non-covalent interactions
(supramolecular interactions) should be more precisely controlled and have non-equilibriated states.
In this regard, this presentation begins with a rational molecular design strategy for the
realization of precise non-covalent polymerization in solution[1], [2]. I believe that this achievement
steps forward towards dynamic functional chemical systems. From the second part of my talk, a
new class of polymer design capable of forming dynamically crosslinked complex network will
be discussed[3]. Multiple distinct crosslinking bonds with different bonding strength exist in the
network. Such newly observed network realized unsual mechanical properties such as high
stretchability, high toughness and autonmous self-healability, whereas their mechanical responses
were similar to those of human skin. Lastly, unprecedented applications in electronic systems will
be presented using this new energy dissipating chemical system[4],[5]. Integration of the dynamic
chemical system with electronic materials successfully imparts its intrinsic dynamicity to
electronics such that mechanically tough and self-healable electronic skins are developed for the
first time.
