Reversible sol-to-gel transformation of uracil gelators specific colorimetric and fluorimetric sensor for fluoride ions

Reversible sol-to-gel transformation of uracil gelators : specific colorimetric and fluorimetric sensor for fluoride ions

A new type of anthracene organogelator based on uracil was obtained using organic aromatic solvents, cyclohexane, DMSO, ethanol, and ethyl acetate. It was further characterized by field-emission scanning electron microscopy and transmission electron microscopy. Specifically, the resulting organogels...

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Bibliographische Detailangaben
Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 29(2013), 9 vom: 05. März, Seite 2843-8
1. Verfasser: Xing, Ling-Bao (VerfasserIn)
Weitere Verfasser: Yang, Bing, Wang, Xiao-Jun, Wang, Jiu-Ju, Chen, Bin, Wu, Qianhong, Peng, Hui-Xing, Zhang, Li-Ping, Tung, Chen-Ho, Wu, Li-Zhu
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Alkanes Amides Anthracenes Gels Uracil 56HH86ZVCT anthracene EH46A1TLD7 mehr... Fluorides Q80VPU408O
Beschreibung
Zusammenfassung:A new type of anthracene organogelator based on uracil was obtained using organic aromatic solvents, cyclohexane, DMSO, ethanol, and ethyl acetate. It was further characterized by field-emission scanning electron microscopy and transmission electron microscopy. Specifically, the resulting organogels were demonstrated to be promising colorimetric and fluorescent sensors toward fluoride ions with high sensitivity and selectivity, accompanying the disruption of the gelators. Spectroscopic study and (1)H NMR titration experiment revealed that the deprotonation of the hydrogen atom on the N position of uracil moiety by fluoride ions is responsible for the recognition events, evidenced by immediate transformation from the sol phase to the gel state upon adding a small amount of a proton solvent, methanol. The process is reversible, with zero loss in sensing activity and sol-to-gel transformation ability even after five runs
Beschreibung:Date Completed 16.08.2013
Date Revised 21.11.2013
published: Print-Electronic
Citation Status MEDLINE
ISSN:1520-5827
DOI:10.1021/la304920j