Benzothiazolylhydrazone-Based Turn-on Fluorescent Probe for Detecting Cu2+: S-donor as a Cu2+-induced Fluorescence Quenching Inhibitor
The fluorescent turn-on detection of metal ions is highly desirable for public health and environmental security. Herein, we report a rationally designed fluorescent probe (1) for the detection of Cu2+ synthesized by integrating 2-hydrazinylbenzothiazole with 3-acetyl-7-hydroxycoumarin. The probe al...
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Slovenian Chemical Society
2021-09-01
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doaj-1153b34d3d2649808cb023d687e02f0a2021-09-30T07:59:00ZengSlovenian Chemical SocietyActa Chimica Slovenica1318-02071580-31552021-09-0168356256610.17344/acsi.2020.6324977Benzothiazolylhydrazone-Based Turn-on Fluorescent Probe for Detecting Cu2+: S-donor as a Cu2+-induced Fluorescence Quenching InhibitorQiao LiYang ZhaoEnju WangThe fluorescent turn-on detection of metal ions is highly desirable for public health and environmental security. Herein, we report a rationally designed fluorescent probe (1) for the detection of Cu2+ synthesized by integrating 2-hydrazinylbenzothiazole with 3-acetyl-7-hydroxycoumarin. The probe alone is non-fluorescent due to the isomerization of C=N in the excited state. The addition of Cu2+ can cause a delayed fluorescence enhancement. A comparative study of 1 and its analogues indicated that the turn-on fluorescence response was thanks to the sulfur atom coordinating to Cu2+. The response delay of 1 in sensing Cu2+ was ascribed to the gradual transition from N-coordination to S-coordination (N and S in thiazole moiety). The proposed new function of S-donor would provide a new approach for the turn-on fluorescence sensation of Cu2+.https://journals.matheo.si/index.php/ACSi/article/view/6324fluorescent probecoumarinbenzothiazolecupric ions-donordelayed fluorescence |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Qiao Li Yang Zhao Enju Wang |
spellingShingle |
Qiao Li Yang Zhao Enju Wang Benzothiazolylhydrazone-Based Turn-on Fluorescent Probe for Detecting Cu2+: S-donor as a Cu2+-induced Fluorescence Quenching Inhibitor Acta Chimica Slovenica fluorescent probe coumarin benzothiazole cupric ion s-donor delayed fluorescence |
author_facet |
Qiao Li Yang Zhao Enju Wang |
author_sort |
Qiao Li |
title |
Benzothiazolylhydrazone-Based Turn-on Fluorescent Probe for Detecting Cu2+: S-donor as a Cu2+-induced Fluorescence Quenching Inhibitor |
title_short |
Benzothiazolylhydrazone-Based Turn-on Fluorescent Probe for Detecting Cu2+: S-donor as a Cu2+-induced Fluorescence Quenching Inhibitor |
title_full |
Benzothiazolylhydrazone-Based Turn-on Fluorescent Probe for Detecting Cu2+: S-donor as a Cu2+-induced Fluorescence Quenching Inhibitor |
title_fullStr |
Benzothiazolylhydrazone-Based Turn-on Fluorescent Probe for Detecting Cu2+: S-donor as a Cu2+-induced Fluorescence Quenching Inhibitor |
title_full_unstemmed |
Benzothiazolylhydrazone-Based Turn-on Fluorescent Probe for Detecting Cu2+: S-donor as a Cu2+-induced Fluorescence Quenching Inhibitor |
title_sort |
benzothiazolylhydrazone-based turn-on fluorescent probe for detecting cu2+: s-donor as a cu2+-induced fluorescence quenching inhibitor |
publisher |
Slovenian Chemical Society |
series |
Acta Chimica Slovenica |
issn |
1318-0207 1580-3155 |
publishDate |
2021-09-01 |
description |
The fluorescent turn-on detection of metal ions is highly desirable for public health and environmental security. Herein, we report a rationally designed fluorescent probe (1) for the detection of Cu2+ synthesized by integrating 2-hydrazinylbenzothiazole with 3-acetyl-7-hydroxycoumarin. The probe alone is non-fluorescent due to the isomerization of C=N in the excited state. The addition of Cu2+ can cause a delayed fluorescence enhancement. A comparative study of 1 and its analogues indicated that the turn-on fluorescence response was thanks to the sulfur atom coordinating to Cu2+. The response delay of 1 in sensing Cu2+ was ascribed to the gradual transition from N-coordination to S-coordination (N and S in thiazole moiety). The proposed new function of S-donor would provide a new approach for the turn-on fluorescence sensation of Cu2+. |
topic |
fluorescent probe coumarin benzothiazole cupric ion s-donor delayed fluorescence |
url |
https://journals.matheo.si/index.php/ACSi/article/view/6324 |
work_keys_str_mv |
AT qiaoli benzothiazolylhydrazonebasedturnonfluorescentprobefordetectingcu2sdonorasacu2inducedfluorescencequenchinginhibitor AT yangzhao benzothiazolylhydrazonebasedturnonfluorescentprobefordetectingcu2sdonorasacu2inducedfluorescencequenchinginhibitor AT enjuwang benzothiazolylhydrazonebasedturnonfluorescentprobefordetectingcu2sdonorasacu2inducedfluorescencequenchinginhibitor |
_version_ |
1716863776725139456 |