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Turn-on detection of Cs Ions based on conjugated polymer-graphene oxide

Jang, G., Cho, E., Harwood, L. M. and Lee, T. S. (2019) Turn-on detection of Cs Ions based on conjugated polymer-graphene oxide. Polymer(Korea), 43 (2). pp. 302-308. ISSN 2234-8077

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To link to this item DOI: 10.7317/pk.2019.43.2.302


New type of “turn-on” fluorescent sensor for Cs ion was developed using a composite of blue-emissive conjugated polymer (CP) and graphene oxide (GO). Ethylene glycol units were introduced to the side chain of CP, which could interact with Cs ions. The CP and GO formed a stable, nonfluorescent composite, because of hydrophobic and ππ interactions between them. In the presence of Cs ions, the CP was released from the CP-GO composite because of higher affinity of Cs ions with ethylene glycol units in the CP. Such a weaker interaction between CP and GO led to the recovery of initial blue fluorescence of the CP. The degree of fluorescence restoration would be a measure of the concentration of Cs ions. Thus, fluorescence “turn-on” from CP-GO was attributed to the presence of Cs ions.

Item Type:Article
Divisions:Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
ID Code:84752

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