Towards the development of Eu(III) luminescent switching/sensing in water-permeable hydrogels |
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| Authors: | Thorfinnur Gunnlaugsson Colin P McCoy |
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| Institution: | a Department of Chemistry, Centre for Synthesis and Chemical Biology, Trinity College Dublin, Dublin 2, Ireland
b School of Pharmacy, The Queen’s University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK |
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| Abstract: | The synthesis of the Eu(III) complex 1.Eu and photophysical studies of this complex in solution are described. In water, the Eu(III) luminescence was ‘switched on’ in the presence of H+, with large enhancements in the Eu(III) luminescence. The complex was then incorporated into polymethylmethacrylate-co-2-(hydroxyethylmethacrylate)]-based hydrogels and the luminescent properties of the resulting polymeric films were investigated using confocal laser-scanning microscopy as well as using steady-state luminescence. The luminescence was shown to be ‘switched on’ in the soft material after adjusting the pH of the solution in which the 1.Eu-incorporated film was immersed from alkaline to acid. |
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