Insights in the determination of saxitoxin with fluorogenic crown ethers in water

Bernhard Müller*, Günter Mistlberger, Ingo Klimant

*Korrespondierende/r Autor/-in für diese Arbeit

Publikation: Beitrag in einer FachzeitschriftArtikelBegutachtung


In this contribution, we present new insights and a critical discussion in the optical detection of saxitoxin using fluorophores with crown ethers. Fluorescence enhancement is caused by the reduction of photoinduced electron transfer upon complexation with the analyte. Our attempts to improve this detection method neither did yield a functioning sensor nor were the attempts to reproduce published data in this area successful. Due to the fact that only low concentrations of saxitoxin are available, multiple surrogates were investigated at high concentrations. However, no turn on response was observed. Moreover, a fluorescent decomposition product of saxitoxin that forms under UV light was discovered which was in our opinion misinterpreted as a sensor response by previous publications.
Seiten (von - bis)493–497
FachzeitschriftMonatshefte für Chemie - Chemical Monthly
PublikationsstatusVeröffentlicht - 2018

Dieses zitieren