Jump to main content
Jump to site search

Issue 42, 2017
Previous Article Next Article

A novel multimode sensor showing cation-dependent fluorescence colour

Author affiliations

Abstract

A novel sensor, 4-[2-(9-anthryl)ethynyl]-1,10-phenanthroline (1), exhibits highly intense fluorescent in the wavelength region of 440–600 nm (maximum wavelength (λf) = 470 nm) with the quantum yield (Φf) and lifetime (τf) being 0.90 and 4.2 ns, respectively, in CH3CN at 298 K. In the presence of a divalent cation (M2+ = Ba2+, Ca2+, Mg2+, or Zn2+) in CH3CN, sensor 1 can tightly bind M2+ and shows intense fluorescent (Φf = 0.90–0.19, τf = 2.1–6.9 ns) with the color being dependent on the nature of M2+ (λf = 514–584 nm). The results demonstrate that a single fluorescent sensor 1 is capable of simultaneous identification and quantitation of M2+ based on λf and the fluorescent intensity (Φf), respectively. The fluorescence maximum energy of the [1–M2+] complex is shown to correlate linearly with the pKa value of M2+. The spectroscopic and photophysical properties of sensor 1 in the absence and presence of M2+ are also discussed.

Graphical abstract: A novel multimode sensor showing cation-dependent fluorescence colour

Back to tab navigation

Supplementary files

Publication details

The article was received on 22 Aug 2017, accepted on 04 Oct 2017 and first published on 04 Oct 2017


Article type: Paper
DOI: 10.1039/C7CP05734B
Citation: Phys. Chem. Chem. Phys., 2017,19, 28943-28949
  •   Request permissions

    A novel multimode sensor showing cation-dependent fluorescence colour

    S. Fujii, R. Ishimura, A. Nakagawa and N. Kitamura, Phys. Chem. Chem. Phys., 2017, 19, 28943
    DOI: 10.1039/C7CP05734B

Search articles by author

Spotlight

Advertisements