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| Type |
Oral Presentation |
| Area |
Oral Presentation for Young Polymer Scientists |
| Room No. |
Room 403 |
| Time |
THU 09:36-09:48 |
| Code |
POLY.O-4 |
| Subject |
Multi-Responsive Dynamic covalent Hydrazone Supramolecular Polymers |
| Authors |
Kyung-su Kim, Changsik Song*
Department of Chemistry, Sungkyunkwan University, Korea
|
| Abstract |
Stimuli-responsive polymeric systems are of considerable interest due to their potential applications in environment-adaptive technologies such as smart surfaces. Traditionally, such systems can be constructed either by dynamic non-covalent (supramolecular) or dynamic covalent chemistry, but the use of both chemistries in one system offers unique opportunities for structural diversity and various controllability. Herein, we report that hydrazone-pyridinum conjugates, which can be dynamically exchanged by transimination, can be assembled into one-dimensional wires by direct intermolecular interactions (without metal-ion coordination). The self-assembly process can be controlled not only by dynamic covalent chemistry, but also by pH adjustment. The hydrazone-pyridinum conjugates are transformed to merocyanine-type dyes of distinctive negative solvatochromism via deprotonation, which affects their self-assembly. Such a dual control of the dynamic molecular assembly will provide a way to develop diverse smart materials with multi-stimuli-responsiveness |
| E-mail |
zzang11k@naver.com |
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123rd General Meeting of the KCS