121st General Meeting of the KCS

Type Poster Presentation
Area Organic Chemistry
Room No. Event Hall
Time 4월 19일 (목요일) 11:00~12:30
Code ORGN.P-471
Subject Alkyl Substituent Effect on the Supramolecular Polymerization of Hydrazone-based Molecular Building Blocks
Authors Hye Jin Cho, Kyung-su Kim, Changsik Song*
Department of Chemistry, Sungkyunkwan University, Korea
Abstract Hydrazone is well-known functional group for its dynamicity originated from reversible C=N bond formation. The hydrazone functional group also shows conformational changes via E-Z isomerization through this C=N bond by external stimuli such as light, pH, and metal coordination. Based on these properties, the hydrazone functional group has been utilized to construct stimuli-responsive self-assemblies. In this study, novel benzoyl hydrazone para-pyridinium conjugates were synthesized and assembled to form wire-type supramolecular polymers by direct intermolecular interactions. The formation of the polymers could be controlled reversibly according to the pH environment. UV-vis spectroscopic data of mono-hydrazone model compounds were collected to study the fundamental properties of the corresponding hydrazone conjugates. Several alkyl tails were attached to the end of hydrazones, and the effect of alkyl tails were investigated with UV-vis spectroscopy, circular dichroism spectroscopy, and scanning electron microscopy (SEM).
E-mail chj9420@skku.edu