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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. Procedia Engineering, 25 . pp. 1545-1548. ISSN 1877-7058

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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:Article (Submitted)
Refereed:Yes
Uncontrolled Keywords:spiropyran; micro-capillary; ROMP; solvatochromism
Subjects:Physical Sciences > Chemistry
DCU Faculties and Centres:Research Initiatives and Centres > CLARITY: The Centre for Sensor Web Technologies
Publisher:Elsevier Ltd.
Official URL:http://dx.doi.org/10.1016/j.proeng.2011.12.382
Copyright Information:© 2011 Elsevier
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:16659
Deposited On:30 Jan 2012 11:44 by Larisa Florea. Last Modified 30 Jan 2012 11:44

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