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Metal-triggered supramolecular hydrogels based on bipyridine ligand possessing hydrazine moieties with metal ionsMetal-triggered supramolecular hydrogels based on bipyridine ligand possessing hydrazine moieties with metal ions

Other Titles
Metal-triggered supramolecular hydrogels based on bipyridine ligand possessing hydrazine moieties with metal ions
Authors
Go, KayeongKim, SeheeKim, MinHyeChoi, HeekyoungJung, Sung HoJung, Jong Hwa
Issue Date
Feb-2024
Publisher
John Wiley and Sons Inc
Keywords
bipyridine-based gelator; complexes; gelation; helical fiber; metalosupramolecular hydrogel
Citation
Bulletin of the Korean Chemical Society, v.45, no.3, pp 243 - 246
Pages
4
Indexed
SCIE
SCOPUS
KCI
Journal Title
Bulletin of the Korean Chemical Society
Volume
45
Number
3
Start Page
243
End Page
246
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/69743
DOI
10.1002/bkcs.12818
ISSN
0253-2964
1229-5949
Abstract
Bipyridine-based gelator 1 having two D-alanine units was prepared, and its gelation ability was evaluated in the presence of Co(NO3)2 and AgNO3 in water. Gelator 1 could gelate H2O in the presence of Co(NO3)2 or AgNO3 (1.0 equiv.) in water. Gelator 1 formed a 2:1 (1:Co2+) octahedral complex with Co2+, whereas it formed a 2:1 (1:Ag+) tetrahedral complex with Ag+. The metallosupramolecular hydrogel with Co2+ assembled into a left-handed helical fiber, whereas that with Ag+ assembled into a nanorod structure. 1H NMR and FTIR analyses revealed that π–π stacking and intermolecular hydrogen bonds acted as the driving force for the formation of the supramolecular nanoarchitectures. Furthermore, to characterize the viscoelastic properties of hydrogels, rheology experiments were conducted at 25°C, including time, strain, and frequency sweeps. © 2024 Korean Chemical Society, Seoul & Wiley-VCH GmbH.
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