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Super Metal-Hydrogels Constructed from Simple Tripodal Gelator with Rare Earth Metal Ions and Its Application in Highly Selective and Ultrasensitive Detection Histidine

Abstract

A series of stable super metal-hydrogels (TP-Ms, M = Tb3+, Eu3+, La3+ and Ce3+) with lower critical gelation concentration (2.28×10-3 M, 0.1%) were successfully constructed by hierarchical assemblies of tripodal gelator (TP) with rare earth metal ions (Tb3+, Eu3+, La3+ and Ce3+). Interestingly, the super metal-hydrogels TP-Eu and TP-La show specific ultrasensitive response for Histidine (His), with the addition of series amino acids into the metal-hydrogels TP-Eu and TP-La, respectively, only the His could induce distinct fluorescent enhencement for TP-Eu and TP-La, other amino acids did not lead to any significant interference in the His sensing process. The LODs of super metal-hydrogel TP-Eu and TP-La for His are (1.83-1.94)×10-9 and (1.83-1.85)×10-9 M, respectively. In addition, constructing super supramolecular metal-hydrogel by hierarchical assemblies of an easy to make tripodal gelator and rare earth metal ions is a novel and efficient approach for the design and development of multi-functional super supramolecular hydrogel-based materials.

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Publication details

The article was received on 13 Nov 2018, accepted on 03 Jan 2019 and first published on 03 Jan 2019


Article type: Paper
DOI: 10.1039/C8SM02319K
Citation: Soft Matter, 2019, Accepted Manuscript
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    Super Metal-Hydrogels Constructed from Simple Tripodal Gelator with Rare Earth Metal Ions and Its Application in Highly Selective and Ultrasensitive Detection Histidine

    J. Liu, Y. Fan, Q. Zhang, H. Yao, Y. Zhang, T. Wei and Q. Lin, Soft Matter, 2019, Accepted Manuscript , DOI: 10.1039/C8SM02319K

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