Related Researcher

Author's Photo

Lee, Zonghoon
Atomic-Scale Electron Microscopy (ASEM) Lab
Research Interests
  • Advanced Transmission Electron Microscopy (TEM/STEM), in Situ TEM, graphene, 2D materials, low-dimensional crystals, nanostructured materials

Unconventional assemblies of bisacylhydrazones: The role of water for circularly polarized luminescence

Cited 0 times inthomson ciCited 0 times inthomson ci
Unconventional assemblies of bisacylhydrazones: The role of water for circularly polarized luminescence
Cho, Hye JinJeong, Dong YeunMoon, HwihyunKim, TaewooChung, You KyoungLee, YeongdongLee, ZonghoonHuh, JoonsukYou, YoungminSong, Changsik
Issue Date
AGGREGATE, v.3, no.5
Understanding the precise molecular arrangement of chiral supramolecular polymers is essential not only to comprehend complex superstructures like proteins and DNA but also for the development of next-generation optoelectronic materials, including materials displaying high-performance circularly polarized luminescence (CPL). Herein, we report the first chiral supramolecular polymer systems based on hydrazone–pyridinium conjugates comprising alkyl chains of different lengths, which afforded control of the apparent supramolecular chirality. Although supramolecular chirality is governed basically by the remote chiral centers of alkyl chains, helicity inversion was achieved by controlling the conditions under which the hydrazone building blocks underwent aggregation (i.e., solvent compositions or temperature). More importantly, the addition of water to the system led to aggregation-induced hydrazone deprotonation, which resulted in a completely different self-assembly behavior. Structural water molecules played an essential role, forming the assembly's channel-like backbone, around which hydrazone molecules gathered as a result of hydrogen bonding interactions. Further co-assembly of an achiral hydrazone luminophore with the given supramolecular polymer system allowed the fabrication of a novel CPL-active hydrazone-based material exhibiting a high maximum value for the photoluminescence dissymmetry factor of −2.6 × 10−2.
Appears in Collections:
MSE_Journal Papers
Files in This Item:
Aggregate - 2022 - Cho - Unconventional assemblies of bisacylhydrazones The role of water for circularly polarized.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record


  • mendeley


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.