Fluorescent sensor based on newly synthesized fluorescein octadecyl ether octadecyl ester (FODEE) for direct determination of phenols in aqueous solutions

Wing Hong CHAN*, Albert W M LEE, Yiu Sing Lam, Ke Min Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Fluorescein octadecyl ether octadecyl ester (FODEE) was synthesized. It was a better fluorescein analogue than fluorescein octadecyl ester (FODE). A prominent fluorescence enhancement effect was observed when the compound in poly(vinyl chloride)(PVC) membrane was applied to carboxylic acid solutions, while an outstanding quenching effect was observed when the membrane was applied to phenol solutions. Based on the quenching effect of phenols on FODEE, a fluorescent sensor for direct determination of phenols in aqueous solutions was developed. This sensor showed reversible response in the concentration range from 1.0 x 10-6 to 1.0 x 10-1 mol dm-3 for the detection of p-cresol in Tris-HCl buffer at pH 7.0. It also showed fast response time (t(90%) less than 3 min.) when the sensor was applied to p- cresol solution at concentration levels of 3.0 x 10-4 and 1.0 x 10-3 mol dm-3 alternatively. A working principle was proposed and the responses of this sensor to various kinds of phenol were studied.

Original languageEnglish
Pages (from-to)197-203
Number of pages7
JournalAnalytica Chimica Acta
Volume351
Issue number1-3
DOIs
Publication statusPublished - 30 Sep 1997

Scopus Subject Areas

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy

User-Defined Keywords

  • Fluorescein analogues
  • Fluorimetry
  • Optodes
  • Phenols
  • Sensors

Fingerprint

Dive into the research topics of 'Fluorescent sensor based on newly synthesized fluorescein octadecyl ether octadecyl ester (FODEE) for direct determination of phenols in aqueous solutions'. Together they form a unique fingerprint.

Cite this