Responsive europium emission for paralytic shellfish saxitoxin detection in water

Weijian Ye; Junrong Huang; Zhenhao Liang; Wenlu Zheng; Jing Xiang Zhang; Chi Sing Lee

doi:10.1016/j.jlumin.2018.02.061

Responsive europium emission for paralytic shellfish saxitoxin detection in water

Weijian Ye
, Junrong Huang
, Zhenhao Liang
, Wenlu Zheng
, Jing Xiang Zhang^*
, Chi Sing Lee^*

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

Abstract

A water-soluble europium complex (EuL1), with the chromophore conjugated with both the Eu3+ ion and the aza-18-crown-6 ether moiety (receptor), were synthesized and its photophysical properties were studied. Saxitoxin (STX) selectively binds to EuL1 and induced a 4-fold enhancement in europium emission in the presence of a variety of metal ions. A mechanistic study indicated that the luminescence enhancement could be triggered by a two-interaction binding mechanism, in which the initial interaction between STX and the aza-18-crown-6 ether moiety of EuL1 induces the secondary interactions between STX and the Eu3+ ion, which resulted in displacement of the coordinated water molecule on Eu3+ ion.

Original language	English
Pages (from-to)	28-33
Journal	Journal of Luminescence
Volume	199
DOIs	https://doi.org/10.1016/j.jlumin.2018.02.061
Publication status	Published - Jul 2018

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10.1016/j.jlumin.2018.02.061

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@article{8f529b4e53684f94a50ccaaeac662d0f,

title = "Responsive europium emission for paralytic shellfish saxitoxin detection in water",

abstract = "A water-soluble europium complex (EuL1), with the chromophore conjugated with both the Eu3+ ion and the aza-18-crown-6 ether moiety (receptor), were synthesized and its photophysical properties were studied. Saxitoxin (STX) selectively binds to EuL1 and induced a 4-fold enhancement in europium emission in the presence of a variety of metal ions. A mechanistic study indicated that the luminescence enhancement could be triggered by a two-interaction binding mechanism, in which the initial interaction between STX and the aza-18-crown-6 ether moiety of EuL1 induces the secondary interactions between STX and the Eu3+ ion, which resulted in displacement of the coordinated water molecule on Eu3+ ion. ",

author = "Weijian Ye and Junrong Huang and Zhenhao Liang and Wenlu Zheng and Zhang, \{Jing Xiang\} and Lee, \{Chi Sing\}",

note = "This work was supported by the Shenzhen Science, Technology and Innovation Committee ( JCYJ20150626111042525 and JCYJ20160330095659560 ) and Peking University Shenzhen Graduate School. Publisher Copyright: {\textcopyright} 2018 Elsevier B.V. All rights reserved.",

year = "2018",

month = jul,

doi = "10.1016/j.jlumin.2018.02.061",

language = "English",

volume = "199",

pages = "28--33",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Responsive europium emission for paralytic shellfish saxitoxin detection in water

AU - Ye, Weijian

AU - Huang, Junrong

AU - Liang, Zhenhao

AU - Zheng, Wenlu

AU - Zhang, Jing Xiang

AU - Lee, Chi Sing

N1 - This work was supported by the Shenzhen Science, Technology and Innovation Committee ( JCYJ20150626111042525 and JCYJ20160330095659560 ) and Peking University Shenzhen Graduate School. Publisher Copyright: © 2018 Elsevier B.V. All rights reserved.

PY - 2018/7

Y1 - 2018/7

N2 - A water-soluble europium complex (EuL1), with the chromophore conjugated with both the Eu3+ ion and the aza-18-crown-6 ether moiety (receptor), were synthesized and its photophysical properties were studied. Saxitoxin (STX) selectively binds to EuL1 and induced a 4-fold enhancement in europium emission in the presence of a variety of metal ions. A mechanistic study indicated that the luminescence enhancement could be triggered by a two-interaction binding mechanism, in which the initial interaction between STX and the aza-18-crown-6 ether moiety of EuL1 induces the secondary interactions between STX and the Eu3+ ion, which resulted in displacement of the coordinated water molecule on Eu3+ ion.

AB - A water-soluble europium complex (EuL1), with the chromophore conjugated with both the Eu3+ ion and the aza-18-crown-6 ether moiety (receptor), were synthesized and its photophysical properties were studied. Saxitoxin (STX) selectively binds to EuL1 and induced a 4-fold enhancement in europium emission in the presence of a variety of metal ions. A mechanistic study indicated that the luminescence enhancement could be triggered by a two-interaction binding mechanism, in which the initial interaction between STX and the aza-18-crown-6 ether moiety of EuL1 induces the secondary interactions between STX and the Eu3+ ion, which resulted in displacement of the coordinated water molecule on Eu3+ ion.

U2 - 10.1016/j.jlumin.2018.02.061

DO - 10.1016/j.jlumin.2018.02.061

M3 - Journal article

SN - 0022-2313

VL - 199

SP - 28

EP - 33

JO - Journal of Luminescence

JF - Journal of Luminescence

ER -

Responsive europium emission for paralytic shellfish saxitoxin detection in water

Abstract

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