Issue 14, 2011

Photoinduced pH drops in water

Abstract

A 2-hydroxyazobenzene platform has been evaluated to photorelease protons in aqueous solutions. Three different systems relying on molecular, supramolecular and polymeric strategies have been investigated in order to tune the water solubility and the thermodynamic and kinetic properties. This paper first reports on the syntheses and the physico chemical analyses for each system. Subsequently, we show that the three strategies are appropriate to reversibly photo-generate tunable pH drops in water up to one pH unit amplitude and at the 10–100 s timescale, upon transient illumination at 365 nm.

Graphical abstract: Photoinduced pH drops in water

Supplementary files

Article information

Article type
Paper
Submitted
09 Xim 2010
Accepted
01 Nah 2011
First published
07 Cig 2011

Phys. Chem. Chem. Phys., 2011,13, 6493-6499

Photoinduced pH drops in water

M. Emond, J. Sun, J. Grégoire, S. Maurin, C. Tribet and L. Jullien, Phys. Chem. Chem. Phys., 2011, 13, 6493 DOI: 10.1039/C0CP02464C

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