Cation‐Tuned Stimuli‐Responsive and Optical Properties of Supramolecular Hydrogels. Issue 6 (5th May 2015)

• Record Type: Journal Article
• Authors: Yamanaka, Masamichi; Yanai, Kazushige; Zama, Yusuke; Tsuchiyagaito, Junko; Yoshida, Masaru; Ishii, Ayumi; Hasegawa, Miki
• Is Part Of: Chemistry, an Asian journal. Volume 10:Issue 6(2015:Jun.)
• Page Start: 1299
• Page End: 1303
• Publication Date: 2015-05-05
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1002/asia.201500274
• Languages: English
• ISSNs: 1861-4728

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Hierarchical self‐assembly of an amphiphilic tris‐urea in aqueous media is shown. A mixture of the amphiphilic tris‐urea and an alkaline solution gave a viscous solution composed of fibrous aggregates. This viscous solution transformed into supramolecular hydrogels, which are capable of hierarchically organizing into higher‐order aggregates in response to several cationic triggers. The resulting supramolecular hydrogels were relatively stiff and their storage moduli attained over 10³ Pa. The stimuli‐responsive and optical properties of the resulting hydrogels were influenced by the cationic trigger. Proton and calcium ion triggers gave pH‐ and chemical stimuli‐responsive hydrogels, respectively. A terbium ion trigger also provided a highly luminescent hydrogel through energy transfer from the tris‐urea to terbium.</p> </abstract>