Hydroxythiophene-bearing benzothiazole: Selective and sensitive detection of periodate and its application as security ink

A hydroxythiophene-bearing benzothiazole (HB) in phosphate buffer solution showed strong yellow fluorescence emission, which selectively and sensitively decreased by addition of IO4−. The reaction between HB and IO4− dramatically accelerated by UV irradiation. The fluorescence emission of HB was gra...

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Bibliographic Details
Published in:Dyes and pigments 2019-03, Vol.162, p.984-989
Main Authors: Hong, Kyeong-Im, Choi, Woo Hyeok, Jang, Woo-Dong
Format: Article
Language:English
Subjects:
ESIPT
Fluorescent probe
Periodate
Security ink
Thiophene
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Summary:A hydroxythiophene-bearing benzothiazole (HB) in phosphate buffer solution showed strong yellow fluorescence emission, which selectively and sensitively decreased by addition of IO4−. The reaction between HB and IO4− dramatically accelerated by UV irradiation. The fluorescence emission of HB was gradually recovered upon thermal heating of the IO4−-adducted product, indicating IO4− release. Using these properties, the solution containing HB and IO4− has been used as a fluorescence-based security ink. [Display omitted] •The probe, HB, has successfully recognized IO4− in various anions, which is accelerated by UV irradiation.•The fluorescence emission of HB was recovered upon thermal heating of the IO4− adducted product.•Using the reversible properties, the solution containing HB and IO4− could be used as a fluorescence-based security ink.
ISSN:0143-7208
1873-3743
DOI:10.1016/j.dyepig.2018.11.026