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Tracking a photo-switchable surface-localised supramolecular interaction via refractive index

Tracking a photo-switchable surface-localised supramolecular interaction via refractive index
Tracking a photo-switchable surface-localised supramolecular interaction via refractive index
As supramolecular chemistry evolves, from the design of interactions in the solution and the solid state to applications at surfaces, there is a need for the development of analytical techniques capable of directly interrogating surface-localised supramolecular interactions. We present a proof-of-concept integrated optical Bragg grating sensor, capable of evanescently detecting small changes in refractive index at infrared wavelengths within a microfluidic system. The high spectral fidelity of the Bragg gratings combined with precise thermal compensation enables direct monitoring of the surface throughout the experiment, enabling the sensor to probe changes in situ and in real-time during surface preparation and chemical modification, and then to follow the progress of a dynamic surface-localised supramolecular interaction. In this study the sensor is assessed through the investigation of a photo-switchable inclusion complex between an azobenzene-functionalised surface and cyclodextrin in aqueous solution. The ability to investigate supramolecular interactions directly in real-time upon a planar surface via refractive index offers a valuable new tool in the understanding of complex dynamic supramolecular systems.
University of Southampton
PARKER, RICHARD
b052ca4d-b6c7-4fdd-a2f9-45032f0ff13f
WALES, DOMINIC J
c001ff27-d3ac-4d2e-859f-9e963fc0374c
Gates, James
b71e31a1-8caa-477e-8556-b64f6cae0dc2
Smith, Peter
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Grossel, Martin
403bf3ff-6364-44e9-ab46-52d84c6f0d56
PARKER, RICHARD
b052ca4d-b6c7-4fdd-a2f9-45032f0ff13f
WALES, DOMINIC J
c001ff27-d3ac-4d2e-859f-9e963fc0374c
Gates, James
b71e31a1-8caa-477e-8556-b64f6cae0dc2
Smith, Peter
8979668a-8b7a-4838-9a74-1a7cfc6665f6
Grossel, Martin
403bf3ff-6364-44e9-ab46-52d84c6f0d56

PARKER, RICHARD, WALES, DOMINIC J, Gates, James, Smith, Peter and Grossel, Martin (2015) Tracking a photo-switchable surface-localised supramolecular interaction via refractive index. University of Southampton [Dataset]

Record type: Dataset

Abstract

As supramolecular chemistry evolves, from the design of interactions in the solution and the solid state to applications at surfaces, there is a need for the development of analytical techniques capable of directly interrogating surface-localised supramolecular interactions. We present a proof-of-concept integrated optical Bragg grating sensor, capable of evanescently detecting small changes in refractive index at infrared wavelengths within a microfluidic system. The high spectral fidelity of the Bragg gratings combined with precise thermal compensation enables direct monitoring of the surface throughout the experiment, enabling the sensor to probe changes in situ and in real-time during surface preparation and chemical modification, and then to follow the progress of a dynamic surface-localised supramolecular interaction. In this study the sensor is assessed through the investigation of a photo-switchable inclusion complex between an azobenzene-functionalised surface and cyclodextrin in aqueous solution. The ability to investigate supramolecular interactions directly in real-time upon a planar surface via refractive index offers a valuable new tool in the understanding of complex dynamic supramolecular systems.

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More information

Published date: 2015
Organisations: Optoelectronics Research Centre, Molecular Assembly, Function & Structure, Chemistry, Photonic Systems Circuits & Sensors, Registrar & University Executive, Synthetic Chemistry Group
Projects:
DTA - University of Southampton
Funded by: UNSPECIFIED (EP/P505739/1 )
October 2010 to September 2014
DTA - University of Southampton
Funded by: UNSPECIFIED (EP/P505119/1 )
October 2009 to September 2013
ISCE-Chem (INTERREG IV A)
Funded by: UNSPECIFIED (4061)
2010 to 2014

Identifiers

Local EPrints ID: 385310
URI: https://eprints.soton.ac.uk/id/eprint/385310
PURE UUID: ed27fc55-311f-4609-956e-94b32d2f3647
ORCID for James Gates: ORCID iD orcid.org/0000-0001-8671-5987
ORCID for Martin Grossel: ORCID iD orcid.org/0000-0001-7469-6854

Catalogue record

Date deposited: 23 Dec 2015 10:05
Last modified: 06 Jun 2018 13:09

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Contributors

Creator: RICHARD PARKER
Creator: DOMINIC J WALES
Creator: James Gates ORCID iD
Creator: Peter Smith
Creator: Martin Grossel ORCID iD

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