Jump to main content
Jump to site search


Phenothiazine electrophores immobilized on periodic mesoporous organosilicas by ion exchange

Author affiliations

Abstract

Two different phenothiazines carrying quaternary ammonium groups in the side chain have been synthesized and fully characterized. These compounds were immobilized by ion exchange on the surface of a periodic mesoporous organosilica (PMO) and a neat silica SBA-15 material bearing sulphonate groups covalently bound to the pore surface. The resulting porous and electrochromophoric materials were studied by means of solid state CP-MAS NMR, IR, UV/Vis and fluorescence spectroscopy, nitrogen adsorption/desorption measurements and cyclic voltammetry. Independent of the nature of the support, the colour of these materials changes to pink by irradiation with light, indicating the formation of phenothiazine radical cations. These species, which turned out to be highly stable even in the presence of atmospheric oxygen, were characterized by EPR spectroscopy.

Graphical abstract: Phenothiazine electrophores immobilized on periodic mesoporous organosilicas by ion exchange

Back to tab navigation

Supplementary files

Publication details

The article was received on 10 Sep 2019, accepted on 17 Sep 2019 and first published on 27 Sep 2019


Article type: Paper
DOI: 10.1039/C9NJ04661E
New J. Chem., 2019, Advance Article

  •   Request permissions

    Phenothiazine electrophores immobilized on periodic mesoporous organosilicas by ion exchange

    B. Schäfgen, H. Khelwati, D. F. Bechtel, A. DeCuyper, A. Schüssler, A. Neuba, A. J. Pierik, S. Ernst, T. J. J. Müller and W. R. Thiel, New J. Chem., 2019, Advance Article , DOI: 10.1039/C9NJ04661E

Search articles by author

Spotlight

Advertisements