Rational design of fluorescent probe for Hg2+ by changing the chemical bond type

Tengli Cui; Shengzhen Yu; Zejing Chen; Rui Liao; Xinglin Zhang; Qiang Zhao; Huibin Sun; Wei Huang

doi:10.1039/c8ra00295a

Rational design of fluorescent probe for Hg²⁺ by changing the chemical bond type

Tengli Cui, Shengzhen Yu, Zejing Chen, Rui Liao, Xinglin Zhang, Qiang Zhao, Huibin Sun, Wei Huang

SCHOOL OF FLEXIBLE ELECTRONICS(FUTURE TECHNOLOGIES)|INSTITUTE OF ADVANCED MATERIALS(IAM)

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Two kinds of fluorescent probes DFBT and DFABT, and their corresponding water-soluble compounds WDFBT and WDFABT, based on the trimers containing a benzo[2,1,3]thiadiazole moiety and two fluorene moieties are synthesized. Their luminescent behavior towards Hg²⁺ ions and other various metal ions in organic and water solutions are studied in detail via absorption and emission spectroscopy. All these probes show a selective "on-off-type" fluorescent response to Hg²⁺ ions in solution over other metal ions with a maximum detection limit of 10^-7 M. Importantly, the probe type can be changed from irreversible to reversible by altering the bridge mode between the functional units from CC triple bond to C-C single bond. Their detection mechanisms towards Hg²⁺ are studied in detail via mass spectrometry and Job plots, which are attributed to irreversible chemical reaction for DFABT and WDFABT and a reversible coordination reaction for DFBT and WDFBT respectively. Our research results about this kind of organic fluorescent probe provide valuable information to the future design of practical Hg²⁺ fluorescent probes.

Original language	English
Pages (from-to)	12276-12281
Number of pages	6
Journal	RSC Advances
Volume	8
Issue number	22
DOIs	https://doi.org/10.1039/c8ra00295a
State	Published - 2018

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title = "Rational design of fluorescent probe for Hg2+ by changing the chemical bond type",

abstract = "Two kinds of fluorescent probes DFBT and DFABT, and their corresponding water-soluble compounds WDFBT and WDFABT, based on the trimers containing a benzo[2,1,3]thiadiazole moiety and two fluorene moieties are synthesized. Their luminescent behavior towards Hg2+ ions and other various metal ions in organic and water solutions are studied in detail via absorption and emission spectroscopy. All these probes show a selective {"}on-off-type{"} fluorescent response to Hg2+ ions in solution over other metal ions with a maximum detection limit of 10-7 M. Importantly, the probe type can be changed from irreversible to reversible by altering the bridge mode between the functional units from CC triple bond to C-C single bond. Their detection mechanisms towards Hg2+ are studied in detail via mass spectrometry and Job plots, which are attributed to irreversible chemical reaction for DFABT and WDFABT and a reversible coordination reaction for DFBT and WDFBT respectively. Our research results about this kind of organic fluorescent probe provide valuable information to the future design of practical Hg2+ fluorescent probes.",

author = "Tengli Cui and Shengzhen Yu and Zejing Chen and Rui Liao and Xinglin Zhang and Qiang Zhao and Huibin Sun and Wei Huang",

note = "Publisher Copyright: {\textcopyright} 2018 The Royal Society of Chemistry.",

year = "2018",

doi = "10.1039/c8ra00295a",

language = "英语",

volume = "8",

pages = "12276--12281",

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TY - JOUR

T1 - Rational design of fluorescent probe for Hg2+ by changing the chemical bond type

AU - Cui, Tengli

AU - Yu, Shengzhen

AU - Chen, Zejing

AU - Liao, Rui

AU - Zhang, Xinglin

AU - Zhao, Qiang

AU - Sun, Huibin

AU - Huang, Wei

PY - 2018

Y1 - 2018

N2 - Two kinds of fluorescent probes DFBT and DFABT, and their corresponding water-soluble compounds WDFBT and WDFABT, based on the trimers containing a benzo[2,1,3]thiadiazole moiety and two fluorene moieties are synthesized. Their luminescent behavior towards Hg2+ ions and other various metal ions in organic and water solutions are studied in detail via absorption and emission spectroscopy. All these probes show a selective "on-off-type" fluorescent response to Hg2+ ions in solution over other metal ions with a maximum detection limit of 10-7 M. Importantly, the probe type can be changed from irreversible to reversible by altering the bridge mode between the functional units from CC triple bond to C-C single bond. Their detection mechanisms towards Hg2+ are studied in detail via mass spectrometry and Job plots, which are attributed to irreversible chemical reaction for DFABT and WDFABT and a reversible coordination reaction for DFBT and WDFBT respectively. Our research results about this kind of organic fluorescent probe provide valuable information to the future design of practical Hg2+ fluorescent probes.

AB - Two kinds of fluorescent probes DFBT and DFABT, and their corresponding water-soluble compounds WDFBT and WDFABT, based on the trimers containing a benzo[2,1,3]thiadiazole moiety and two fluorene moieties are synthesized. Their luminescent behavior towards Hg2+ ions and other various metal ions in organic and water solutions are studied in detail via absorption and emission spectroscopy. All these probes show a selective "on-off-type" fluorescent response to Hg2+ ions in solution over other metal ions with a maximum detection limit of 10-7 M. Importantly, the probe type can be changed from irreversible to reversible by altering the bridge mode between the functional units from CC triple bond to C-C single bond. Their detection mechanisms towards Hg2+ are studied in detail via mass spectrometry and Job plots, which are attributed to irreversible chemical reaction for DFABT and WDFABT and a reversible coordination reaction for DFBT and WDFBT respectively. Our research results about this kind of organic fluorescent probe provide valuable information to the future design of practical Hg2+ fluorescent probes.

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U2 - 10.1039/c8ra00295a

DO - 10.1039/c8ra00295a

M3 - 文章

AN - SCOPUS:85044991292

SN - 2046-2069

VL - 8

SP - 12276

EP - 12281

JO - RSC Advances

JF - RSC Advances

IS - 22

ER -

Rational design of fluorescent probe for Hg²⁺ by changing the chemical bond type

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