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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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Abstract

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)
Event Type:Conference
Refereed:Yes
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.
ID Code:16593
Deposited On:30 Sep 2011 10:56 by Larisa Florea. Last Modified 30 Sep 2011 10:56

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