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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

DC Field Value Language Cho, Hye Jin ko Jeong, Dong Yeun ko Moon, Hwihyun ko Kim, Taewoo ko Chung, You Kyoung ko Lee, Yeongdong ko Lee, Zonghoon ko Huh, Joonsuk ko You, Youngmin ko Song, Changsik ko 2023-01-09T08:19:48Z - 2023-01-09 ko 2022-10 ko
dc.identifier.citation AGGREGATE, v.3, no.5 ko
dc.identifier.issn 2692-4560 ko
dc.identifier.uri -
dc.description.abstract 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. ko
dc.language 영어 ko
dc.publisher WILEY ko
dc.title Unconventional assemblies of bisacylhydrazones: The role of water for circularly polarized luminescence ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85166391724 ko
dc.type.rims ART ko
dc.identifier.doi 10.1002/agt2.168 ko
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