pH-Dependent phosphate separation using a tripodal hexaurea receptor

Zhong Yu Sun; Si Qi Chen; Lin Liang; Wei Zhao; Xiao Juan Yang; Biao Wu

doi:10.1039/d3cc04122k

pH-Dependent phosphate separation using a tripodal hexaurea receptor

Zhong Yu Sun, Si Qi Chen, Lin Liang, Wei Zhao^*, Xiao Juan Yang, Biao Wu^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology

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

5 Citations (Scopus)

Abstract

We demonstrate that a tripodal hexaurea receptor can selectively bind PO₄³⁻ anions via 12 hydrogen bonds with up to 3.8 × 10⁶ M⁻¹ binding affinity in DMSO, which is 38-fold stronger than SO₄²⁻. This receptor facilitates the extraction of PO₄³⁻ from strongly basic aqueous solutions into chloroform using liquid-liquid extraction, followed by its release as the H₂PO₄⁻ anion into an acidic solution. This pH-dependent phosphate extraction successfully enables selective separation of phosphate and sulfate anions.

Original language	English
Pages (from-to)	12923-12926
Number of pages	4
Journal	Chemical Communications
Volume	59
Issue number	86
DOIs	https://doi.org/10.1039/d3cc04122k
Publication status	Published - 28 Sept 2023

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abstract = "We demonstrate that a tripodal hexaurea receptor can selectively bind PO43− anions via 12 hydrogen bonds with up to 3.8 × 106 M−1 binding affinity in DMSO, which is 38-fold stronger than SO42−. This receptor facilitates the extraction of PO43− from strongly basic aqueous solutions into chloroform using liquid-liquid extraction, followed by its release as the H2PO4− anion into an acidic solution. This pH-dependent phosphate extraction successfully enables selective separation of phosphate and sulfate anions.",

author = "Sun, {Zhong Yu} and Chen, {Si Qi} and Lin Liang and Wei Zhao and Yang, {Xiao Juan} and Biao Wu",

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AU - Sun, Zhong Yu

AU - Chen, Si Qi

AU - Liang, Lin

AU - Zhao, Wei

AU - Yang, Xiao Juan

AU - Wu, Biao

PY - 2023/9/28

Y1 - 2023/9/28

N2 - We demonstrate that a tripodal hexaurea receptor can selectively bind PO43− anions via 12 hydrogen bonds with up to 3.8 × 106 M−1 binding affinity in DMSO, which is 38-fold stronger than SO42−. This receptor facilitates the extraction of PO43− from strongly basic aqueous solutions into chloroform using liquid-liquid extraction, followed by its release as the H2PO4− anion into an acidic solution. This pH-dependent phosphate extraction successfully enables selective separation of phosphate and sulfate anions.

AB - We demonstrate that a tripodal hexaurea receptor can selectively bind PO43− anions via 12 hydrogen bonds with up to 3.8 × 106 M−1 binding affinity in DMSO, which is 38-fold stronger than SO42−. This receptor facilitates the extraction of PO43− from strongly basic aqueous solutions into chloroform using liquid-liquid extraction, followed by its release as the H2PO4− anion into an acidic solution. This pH-dependent phosphate extraction successfully enables selective separation of phosphate and sulfate anions.

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U2 - 10.1039/d3cc04122k

DO - 10.1039/d3cc04122k

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VL - 59

SP - 12923

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JO - Chemical Communications

JF - Chemical Communications

IS - 86

ER -

pH-Dependent phosphate separation using a tripodal hexaurea receptor

Abstract

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