Photo-detection of solvent polarities using non-invasive coatings in capillaries
Florea, Larisa and Benito-Lopez, Fernando and Hennart, Alexandre and Diamond, Dermot (2011) Photo-detection of solvent polarities using non-invasive coatings in capillaries. In: Eurosensors 2011, 3-7 Sept 2011, Athens, Greece.
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Fused silica-capillaries were functionalised with spiropyran-polymer brushes using a spiropyran functionalised norbornyl derivative as the monomer (SP-M). The polymerisation was achieved by Surface-Initiated Ring-Opening Metathesis Polymerisation (Si-ROMP). We obtained a three dimensional arrangement, covalently attached to the inner wall of the fused-silica capillary, where the spiropyran moiety has the freedom to open and close in response to light (UV, white light). The spiropyran moieties present a very strong dependence on the polarity of the solvent what is expressed by a shift in its main UV-Vis absorption band therefore functionalised capillaries were successfully used to photo-detect solvents of different polarity while passing through the capillary.
|Item Type:||Conference or Workshop Item (Speech)|
|Uncontrolled Keywords:||spiropyran; micro-capillary; ROMP; solvatochromism|
|Subjects:||Physical Sciences > Chemistry|
|DCU Faculties and Centres:||UNSPECIFIED|
|Use License:||This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License|
|Funders:||Irish Research Council for Science, Engineering and Technology (IRCSET) - Embark Initiative, Science Foundation Ireland under grant 07/CE/I1147.|
|Deposited On:||30 Sep 2011 10:56 by Larisa Florea. Last Modified 30 Sep 2011 10:56|
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