A2B corroles: Fluorescence signaling systems for sensing fluoride ions

Omprakash Yadav; Atul Varshney; Anil Kumar; Ratneshwar Kumar Ratnesh; Mohan Singh Mehata

doi:10.1016/j.saa.2018.05.051

A₂B corroles: Fluorescence signaling systems for sensing fluoride ions

Spectrochim Acta A Mol Biomol Spectrosc. 2018 Sep 5:202:207-213. doi: 10.1016/j.saa.2018.05.051. Epub 2018 May 26.

Authors

Omprakash Yadav¹, Atul Varshney¹, Anil Kumar², Ratneshwar Kumar Ratnesh³, Mohan Singh Mehata³

Affiliations

¹ Department of Applied Chemistry, Delhi Technological University, Delhi 42, India.
² Department of Applied Chemistry, Delhi Technological University, Delhi 42, India. Electronic address: anil_kumar@dce.ac.in.
³ Department of Applied Physics, Delhi Technological University, Delhi 42, India.

PMID: 29787917
DOI: 10.1016/j.saa.2018.05.051

Abstract

Four free base corroles, 1-4, A₂B, (where A = nitrophenyl, and B = pentafluorophenyl, 2, 6-difluoro, 3, 4, 5-trifluoro and 4-carboxymethylphenyl group) have been synthesized, characterized and demonstrated as excellent chemosensor for the detection of fluoride ions selectively in toluene solution. The reported corroles shows highest quantum yield in free base form of porphyrinoid systems so far. All these corrole, 1-4, have the excellent ability to sense fluoride ion. Cumulative effect of static and dynamic factors is responsible for the quenching of fluorescence which indicates the detection of fluoride ion in solution.

Keywords: Corroles; Fluorescence; Fluoride; Sensor; Tetrapyrrole.