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Micro-capillary coatings based on spiropyran polymeric brushes for metal ion binding, detection, and release in continuous flow

Citation

Dunne, A and Delaney, C and McKeon, A and Nesterenko, PN and Paull, B and Benito-Lopez, F and Diamond, D and Florea, L, Micro-capillary coatings based on spiropyran polymeric brushes for metal ion binding, detection, and release in continuous flow, Sensors, 18, (4) Article 1083. ISSN 1424-8220 (2018) [Refereed Article]


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Copyright 2018 The Authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

DOI: doi:10.3390/s18041083

Abstract

Micro-capillaries, capable of light-regulated binding and qualitative detection of divalent metal ions in continuous flow, have been realised through functionalisation with spiropyran photochromic brush-type coatings. Upon irradiation with UV light, the coating switches from the passive non-binding spiropyran form to the active merocyanine form, which binds different divalent metal ions (Zn2+, Co2+, Cu2+, Ni2+, Cd2+), as they pass through the micro-capillary. Furthermore, the merocyanine visible absorbance spectrum changes upon metal ion binding, enabling the ion uptake to be detected optically. Irradiation with white light causes reversion of the merocyanine to the passive spiropyran form, with simultaneous release of the bound metal ion from the micro-capillary coating.

Item Details

Item Type:Refereed Article
Keywords:spiropyrans, polymer brushes, sensors, ROMP, coatings, photochromism, metal ion uptake and release, self-indicating system, micro-capillary
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Separation Science
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
UTAS Author:Nesterenko, PN (Professor Pavel Nesterenko)
UTAS Author:Paull, B (Professor Brett Paull)
ID Code:126236
Year Published:2018
Web of Science® Times Cited:4
Deposited By:Austn Centre for Research in Separation Science
Deposited On:2018-05-30
Last Modified:2019-03-08
Downloads:9 View Download Statistics

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