Kayeong Go, Sehee Kim, MinHye Kim, Heekyoung Choi, Sung Ho Jung, Jong Hwa Jung
{"title":"基于具有金属离子肼基的联吡啶配体的金属触发超分子水凝胶","authors":"Kayeong Go, Sehee Kim, MinHye Kim, Heekyoung Choi, Sung Ho Jung, Jong Hwa Jung","doi":"10.1002/bkcs.12818","DOIUrl":null,"url":null,"abstract":"<p>Bipyridine-based gelator <b>1</b> having two <i>D</i>-alanine units was prepared, and its gelation ability was evaluated in the presence of Co(NO<sub>3</sub>)<sub>2</sub> and AgNO<sub>3</sub> in water. Gelator <b>1</b> could gelate H<sub>2</sub>O in the presence of Co(NO<sub>3</sub>)<sub>2</sub> or AgNO<sub>3</sub> (1.0 equiv.) in water. Gelator <b>1</b> formed a 2:1 (1:Co<sup>2+</sup>) octahedral complex with Co<sup>2+</sup>, whereas it formed a 2:1 (1:Ag<sup>+</sup>) tetrahedral complex with Ag<sup>+</sup>. The metallosupramolecular hydrogel with Co<sup>2+</sup> assembled into a left-handed helical fiber, whereas that with Ag<sup>+</sup> assembled into a nanorod structure. <sup>1</sup>H 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.</p>","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"45 3","pages":"243-246"},"PeriodicalIF":1.7000,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Metal-triggered supramolecular hydrogels based on bipyridine ligand possessing hydrazine moieties with metal ions\",\"authors\":\"Kayeong Go, Sehee Kim, MinHye Kim, Heekyoung Choi, Sung Ho Jung, Jong Hwa Jung\",\"doi\":\"10.1002/bkcs.12818\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Bipyridine-based gelator <b>1</b> having two <i>D</i>-alanine units was prepared, and its gelation ability was evaluated in the presence of Co(NO<sub>3</sub>)<sub>2</sub> and AgNO<sub>3</sub> in water. Gelator <b>1</b> could gelate H<sub>2</sub>O in the presence of Co(NO<sub>3</sub>)<sub>2</sub> or AgNO<sub>3</sub> (1.0 equiv.) in water. Gelator <b>1</b> formed a 2:1 (1:Co<sup>2+</sup>) octahedral complex with Co<sup>2+</sup>, whereas it formed a 2:1 (1:Ag<sup>+</sup>) tetrahedral complex with Ag<sup>+</sup>. The metallosupramolecular hydrogel with Co<sup>2+</sup> assembled into a left-handed helical fiber, whereas that with Ag<sup>+</sup> assembled into a nanorod structure. <sup>1</sup>H 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.</p>\",\"PeriodicalId\":54252,\"journal\":{\"name\":\"Bulletin of the Korean Chemical Society\",\"volume\":\"45 3\",\"pages\":\"243-246\"},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2024-02-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bulletin of the Korean Chemical Society\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/bkcs.12818\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of the Korean Chemical Society","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/bkcs.12818","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Metal-triggered supramolecular hydrogels based on bipyridine ligand possessing hydrazine moieties with metal ions
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.
期刊介绍：
The Bulletin of the Korean Chemical Society is an official research journal of the Korean Chemical Society. It was founded in 1980 and reaches out to the chemical community worldwide. It is strictly peer-reviewed and welcomes Accounts, Communications, Articles, and Notes written in English. The scope of the journal covers all major areas of chemistry: analytical chemistry, electrochemistry, industrial chemistry, inorganic chemistry, life-science chemistry, macromolecular chemistry, organic synthesis, non-synthetic organic chemistry, physical chemistry, and materials chemistry.
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