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Issue 14, 2011
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Photoinduced pH drops in water

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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

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Article information

09 Nov 2010
01 Feb 2011
First published
07 Mar 2011

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

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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