edoc

Coumarin meets Fluorescein : a Förster Resonance Energy Transfer enhanced Ammonia Gas Sensor

Widmer, Susanne and Dorrestijn, Marko and Camerlo, Agathe and Urek, Špela Korent and Lobnik, Aleksandra and Housecroft, Catherine E. and Constable, Edwin C. and Scherer, Lukas J.. (2014) Coumarin meets Fluorescein : a Förster Resonance Energy Transfer enhanced Ammonia Gas Sensor. Analyst, 139 (17). pp. 4335-4342.

[img] PDF - Accepted Version
1203Kb

Official URL: http://edoc.unibas.ch/dok/A6288849

Downloads: Statistics Overview

Abstract

This study focuses on the development of an optical ammonia gas sensor, the sensing mechanism of which is based on Förster resonance energy transfer (FRET) between coumarin and fluorescein. The dyes were immobilized into an organically modified silicate matrix during polymerizing methyltriethoxysilane with trifluoropropyltrimethoxysilane on a poly(methyl methacrylate) substrate. The resulting dye-doped xerogel films were exposed to different gaseous ammonia concentrations. A logarithmic decrease of the coumarin fluorescence emission band at 442 nm was observed with increasing gaseous ammonia concentrations, which was due to enhanced FRET between coumarin and fluorescein. The coumarin/fluorescein composition was optimized in order to obtain the best ammonia sensitivity. First experiments in a flow cell gas sensor setup demonstrated a sensitive and reversible response to gaseous ammonia.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Constable)
05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Housecroft)
UniBasel Contributors:Housecroft, Catherine Elizabeth and Constable, Edwin Charles
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Royal Society of Chemistry
ISSN:0003-2654
e-ISSN:1364-5528
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:22 Sep 2016 09:08
Deposited On:10 Oct 2014 09:19

Repository Staff Only: item control page