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An Optical pH Sensor Based on Diazaoxatriangulenium and Isopropyl‐Bridged Diazatriangulenium Covalently Bound in a Composite Sol–Gel
Author(s) -
Sørensen Thomas Just,
Rosenberg Martin,
Frankær Christian G.,
Laursen Bo W.
Publication year - 2019
Publication title -
advanced materials technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.184
H-Index - 42
ISSN - 2365-709X
DOI - 10.1002/admt.201800561
Subject(s) - optical fiber , covalent bond , fiber optic sensor , spectrometer , optical sensing , composite number , materials science , isopropyl , chemistry , optoelectronics , optics , organic chemistry , physics , composite material
Optical pH sensing is still in its infancy due to lack of highly stable pH responsive dyes. The triangulenium fluorophores show remarkable photostability and have been demonstrated as the responsive dye in an intensity based ratiometric optical pH sensor using a fiber optical sensor hardware. Here, an optical pH sensor is reported where both the responsive dye and the reference dye are from the triangulenium family using free form optics for the hardware platform. A full spectrometer‐based sensor system consisting of sensor chemistry, hardware, and software is presented.