Jump to main content
Jump to site search


Self-assembly of fluorescent galunamide derivative and sensing of acid vapor and mechanical force stimuli

Abstract

A galunamide derivative consisting of a fluorophore with benzoxazole and cyano unit was designed and synthesized to realize dual response to acid vapor and mechanical force. Photophysical properties and self-assembly were investigated. The dilute solution could respond to acid stimulus, and the emission peak at 472 nm shifted to 535 nm with the addition of trifluoroacetic acid (TFA). Moreover, the derivative could self-assemble into thin nanofibers in its gel phase, and the fluorescence of xerogel film is sensitive to TFA vapor. The emission color gradually changed from yellow to orange red upon exposure to acid vapor, and the detection limit is as low as 70 ppb for TFA. The solid exhibited reversible fluorescence color change under the stimuli of mechanical force and solvent annealing. The UV–vis absorption and IR spectra indicate that the fluorescence color conversion can be attributed to the destruction of intermolecular hydrogen bonds and pristine π–π interaction induced by mechanical force.

Back to tab navigation

Supplementary files

Publication details

The article was received on 18 Aug 2017, accepted on 04 Oct 2017 and first published on 06 Oct 2017


Article type: Paper
DOI: 10.1039/C7TC03752J
Citation: J. Mater. Chem. C, 2017, Accepted Manuscript
  •   Request permissions

    Self-assembly of fluorescent galunamide derivative and sensing of acid vapor and mechanical force stimuli

    P. C. Xue, B. Yao, Y. Shen and H. Gao, J. Mater. Chem. C, 2017, Accepted Manuscript , DOI: 10.1039/C7TC03752J

Search articles by author

Spotlight

Advertisements