Fluorescent copolymer aggregate sensor for lithium chloride

Hu Wang; Leighton O. Jones; Tian Zhao; Inhong Hwang; Vincent M. Lynch; Niveen M. Khashab; George C. Schatz; Zachariah A. Page; Jonathan L. Sessler

doi:10.1039/d2sc05342j

Fluorescent copolymer aggregate sensor for lithium chloride

Hu Wang, Leighton O. Jones, Tian Zhao, Inhong Hwang, Vincent M. Lynch, Niveen M. Khashab^*, George C. Schatz^*, Zachariah A. Page^*, Jonathan L. Sessler^*

^*Corresponding author for this work

Chemistry

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

10 Scopus citations

Abstract

We report a copolymeric fluorescent sensor that is selective for lithium chloride. The two constituent polymers comprise pendent triphenylethylene (TPE) moieties for aggregate induced emission (AIE) along with either strapped-calix[4]pyrrole or secondary ammonium groups that drive aggregation via self-assembly upon polymer mixing. Addition of LiCl in acetonitrile disrupts the strapped-calix[4]pyrrole/secondary ammonium chloride salt host-guest crosslinks leading to disaggregation of the polymer chains and a decrease in TPE emission. The lack of AIE perturbation upon addition of NaCl, KCl, MgCl₂ or CaCl₂ provides for high selectivity for LiCl relative to potential interferants. This supramolecular dual polymer approach could serve as a complement to more traditional sensor systems.

Original language	English (US)
Pages (from-to)	4120-4125
Number of pages	6
Journal	Chemical Science
Volume	14
Issue number	15
DOIs	https://doi.org/10.1039/d2sc05342j
State	Published - Mar 22 2023

Funding

We gratefully acknowledge the Robert A. Welch Foundation (F-0018 and 2007 to J. L. S. and Z. A. P., respective) for financial support. J. L. S. and N. M. K. acknowledge support from the King Abdullah University of Science and Technology (KAUST; grant OSR-2019-CRG8-4032). The work in Evanston was supported by the Center for the Sustainable Separation of Metals (CSSM) supported by the National Science Foundation (grant no. CHE1925708). Limited support for this work was also provided by U.S. Borax.

ASJC Scopus subject areas

General Chemistry

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10.1039/d2sc05342j

Cite this

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title = "Fluorescent copolymer aggregate sensor for lithium chloride",

abstract = "We report a copolymeric fluorescent sensor that is selective for lithium chloride. The two constituent polymers comprise pendent triphenylethylene (TPE) moieties for aggregate induced emission (AIE) along with either strapped-calix[4]pyrrole or secondary ammonium groups that drive aggregation via self-assembly upon polymer mixing. Addition of LiCl in acetonitrile disrupts the strapped-calix[4]pyrrole/secondary ammonium chloride salt host-guest crosslinks leading to disaggregation of the polymer chains and a decrease in TPE emission. The lack of AIE perturbation upon addition of NaCl, KCl, MgCl2 or CaCl2 provides for high selectivity for LiCl relative to potential interferants. This supramolecular dual polymer approach could serve as a complement to more traditional sensor systems.",

author = "Hu Wang and Jones, \{Leighton O.\} and Tian Zhao and Inhong Hwang and Lynch, \{Vincent M.\} and Khashab, \{Niveen M.\} and Schatz, \{George C.\} and Page, \{Zachariah A.\} and Sessler, \{Jonathan L.\}",

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year = "2023",

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doi = "10.1039/d2sc05342j",

language = "English (US)",

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journal = "Chemical Science",

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publisher = "Royal Society of Chemistry",

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T1 - Fluorescent copolymer aggregate sensor for lithium chloride

AU - Wang, Hu

AU - Jones, Leighton O.

AU - Zhao, Tian

AU - Hwang, Inhong

AU - Lynch, Vincent M.

AU - Khashab, Niveen M.

AU - Schatz, George C.

AU - Page, Zachariah A.

AU - Sessler, Jonathan L.

PY - 2023/3/22

Y1 - 2023/3/22

N2 - We report a copolymeric fluorescent sensor that is selective for lithium chloride. The two constituent polymers comprise pendent triphenylethylene (TPE) moieties for aggregate induced emission (AIE) along with either strapped-calix[4]pyrrole or secondary ammonium groups that drive aggregation via self-assembly upon polymer mixing. Addition of LiCl in acetonitrile disrupts the strapped-calix[4]pyrrole/secondary ammonium chloride salt host-guest crosslinks leading to disaggregation of the polymer chains and a decrease in TPE emission. The lack of AIE perturbation upon addition of NaCl, KCl, MgCl2 or CaCl2 provides for high selectivity for LiCl relative to potential interferants. This supramolecular dual polymer approach could serve as a complement to more traditional sensor systems.

AB - We report a copolymeric fluorescent sensor that is selective for lithium chloride. The two constituent polymers comprise pendent triphenylethylene (TPE) moieties for aggregate induced emission (AIE) along with either strapped-calix[4]pyrrole or secondary ammonium groups that drive aggregation via self-assembly upon polymer mixing. Addition of LiCl in acetonitrile disrupts the strapped-calix[4]pyrrole/secondary ammonium chloride salt host-guest crosslinks leading to disaggregation of the polymer chains and a decrease in TPE emission. The lack of AIE perturbation upon addition of NaCl, KCl, MgCl2 or CaCl2 provides for high selectivity for LiCl relative to potential interferants. This supramolecular dual polymer approach could serve as a complement to more traditional sensor systems.

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Fluorescent copolymer aggregate sensor for lithium chloride

Abstract

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CCDC 2183452: Experimental Crystal Structure Determination

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Fluorescent copolymer aggregate sensor for lithium chloride

Abstract

Funding

ASJC Scopus subject areas

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CCDC 2183452: Experimental Crystal Structure Determination

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