Measurement of Local Sodium Ion Levels near Micelle Surfaces with Fluorescent Photoinduced-Electron-Transfer Sensors

Seiichi Uchiyama; Eiko Fukatsu; Gareth D. McClean; A. Prasanna de Silva

doi:10.1002/anie.201509096

Measurement of Local Sodium Ion Levels near Micelle Surfaces with Fluorescent Photoinduced-Electron-Transfer Sensors

Seiichi Uchiyama, Eiko Fukatsu, Gareth D. McClean, A. Prasanna de Silva

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Abstract

The Na+ concentration near membranes controls our nerve signals aside from several other crucial bioprocesses. Fluorescent photoinduced electron transfer (PET) sensor molecules target Na+ ions in nanospaces near micellar membranes with excellent selectivity against H+. The Na+ concentration near anionic micelles was found to be higher than that in bulk water by factors of up to 160. Sensor molecules that are not held tightly to the micelle surface only detected a Na+ amplification factor of 8. These results were strengthened by the employment of control compounds whose PET processes are permanently “on” or “off”.

Original language	English
Pages (from-to)	768-771
Number of pages	4
Journal	Angewandte Chemie International Edition
Volume	54
Issue number	2
Early online date	27 Oct 2015
DOIs	https://doi.org/10.1002/anie.201509096
Publication status	Published - 11 Jan 2016

Keywords

fluorescence spectroscopy • fluorescent probes • micelles, sodium, sensors

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10.1002/anie.201509096Licence: Unspecified

Measurement of Local Sodium Ion Levels near Micellar Surfaces with Fluorescent PET (Photoinduced Electron Transfer) Sensors
Copyright 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim This is the accepted version of the following article: Uchiyama, S., Fukatsu, E., McClean, G. D. and de Silva, A. P. (2016), Measurement of Local Sodium Ion Levels near Micelle Surfaces with Fluorescent Photoinduced-Electron-Transfer Sensors. Angew. Chem. Int. Ed., 55: 768–771., which has been published in final form at http://onlinelibrary.wiley.com/wol1/doi/10.1002/anie.201509096/abstract
Accepted author manuscript, 218 KBLicence: Unspecified

Amilra De Silva
- a.desilvaqub.acuk
- School of Chemistry and Chemical Engineering - Emeritus Professor
- Material and Advanced Technologies for Healthcare
- Sensors
Person: Emeritus, Academic

Cite this

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title = "Measurement of Local Sodium Ion Levels near Micelle Surfaces with Fluorescent Photoinduced-Electron-Transfer Sensors",

abstract = "The Na+ concentration near membranes controls our nerve signals aside from several other crucial bioprocesses. Fluorescent photoinduced electron transfer (PET) sensor molecules target Na+ ions in nanospaces near micellar membranes with excellent selectivity against H+. The Na+ concentration near anionic micelles was found to be higher than that in bulk water by factors of up to 160. Sensor molecules that are not held tightly to the micelle surface only detected a Na+ amplification factor of 8. These results were strengthened by the employment of control compounds whose PET processes are permanently “on” or “off”.",

keywords = "fluorescence spectroscopy • fluorescent probes • micelles, sodium, sensors",

author = "Seiichi Uchiyama and Eiko Fukatsu and McClean, {Gareth D.} and {de Silva}, {A. Prasanna}",

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AU - de Silva, A. Prasanna

PY - 2016/1/11

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AB - The Na+ concentration near membranes controls our nerve signals aside from several other crucial bioprocesses. Fluorescent photoinduced electron transfer (PET) sensor molecules target Na+ ions in nanospaces near micellar membranes with excellent selectivity against H+. The Na+ concentration near anionic micelles was found to be higher than that in bulk water by factors of up to 160. Sensor molecules that are not held tightly to the micelle surface only detected a Na+ amplification factor of 8. These results were strengthened by the employment of control compounds whose PET processes are permanently “on” or “off”.

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DO - 10.1002/anie.201509096

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Measurement of Local Sodium Ion Levels near Micelle Surfaces with Fluorescent Photoinduced-Electron-Transfer Sensors

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Amilra De Silva

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