Aryl ethers coupled pyridoxal as supramolecular gelator for selective sensing of F-

作者：Ghosh Kumaresh^*; Pati Chiranjit

来源：Tetrahedron Letters, 2016, 57(49): 5469-5474.

DOI：10.1016/j.tetlet.2016.10.089

• Pyridoxal-based gel
• Fluoride sensing
• Schiff base
• Fluorometric discrimination
• Gelation property

Aryl ethers coupled pyridoxal Schiff base 1 has been synthesized and its gelation properties have been examined. The gelator 1 forms colorless gels from various solvents such as DMSO, DMF, DMSO/H2O and DMF/H2O. The gel matrix obtained from DMSO shows ribbon-like fibrous morphology and has been utilized for efficient 'naked eye' detection of fluoride ion through a reversible gel-sol transition, which is associated with color change from almost colorless to yellow. In DMSO, the Schiff base 1 has also been observed to sense F- ion more efficiently over the basic ions AcO- and CN-. Though few examples of anion sensing in solution with pyridoxal-based Schiff bases are known, anion recognition utilizing pyridoxal-based gelators is unexplored in the literature.

• 出版日期2016-12-7