OceanRep
NIR optical carbon dioxide sensors based on highly photostable dihydroxy-aza-BODIPY dyes.
Schutting, Susanne, Jokic, Tijana, Strobl, Martin, Borisov, Sergey M., Beer, Dirk de and Klimant, Ingo (2015) NIR optical carbon dioxide sensors based on highly photostable dihydroxy-aza-BODIPY dyes. Journal of Materials Chemistry C, 3 (21). pp. 5474-5483. DOI 10.1039/C5TC00346F.
Preview |
Text
Schutting.pdf - Published Version Available under License Creative Commons: Attribution 3.0. Download (2MB) | Preview |
Abstract
A new class of pH-sensitive indicator dyes for optical carbon dioxide sensors based on di-OH-aza-BODIPYs is presented. These colorimetric indicators show absorption maxima in the near infrared range (λmax 670–700 nm for the neutral form, λmax 725–760 nm for the mono-anionic form, λmax 785–830 nm for the di-anionic form), high molar absorption coefficients of up to 77 000 M−1 cm−1 and unmatched photostability. Depending on the electron-withdrawing or electron-donating effect of the substituents the pKa values are tunable (8.7–10.7). Therefore, optical carbon dioxide sensors based on the presented dyes cover diverse dynamic ranges (0.007–2 kPa; 0.18–20 kPa and 0.2–100 kPa), which enables different applications varying from marine science and environmental monitoring to food packaging. The sensors are outstandingly photostable in the absence and presence of carbon dioxide and can be read out via absorption or via the luminescence-based ratiometric scheme using the absorption-modulated inner-filter effect. Monitoring of the carbon dioxide production/consumption of a Hebe plant is demonstrated.
Document Type: | Article |
---|---|
Funder compliance: | info:eu-repo/grantAgreement/EC/FP7/265847 |
Refereed: | Yes |
Open Access Journal?: | No |
Publisher: | Royal Society of Chemistry |
Projects: | ECO2 |
Date Deposited: | 06 Jul 2015 10:56 |
Last Modified: | 23 Jul 2020 07:37 |
URI: | https://oceanrep.geomar.de/id/eprint/29192 |
Actions (login required)
View Item |
Copyright 2023 | GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel | All rights reserved
Questions, comments and suggestions regarding the GEOMAR repository are welcomed
at bibliotheksleitung@geomar.de !