Selective anion sensing by a ruthenium(ii)-bipyridyl-functionalized tripodal tris(urea) receptor

Yongjing Hao; Peiju Yang; Shaoguang Li; Xiaojuan Huang; Xiao Juan Yang; Biao Wu

doi:10.1039/c2dt12488b

Selective anion sensing by a ruthenium(ii)-bipyridyl-functionalized tripodal tris(urea) receptor

Yongjing Hao, Peiju Yang, Shaoguang Li, Xiaojuan Huang, Xiao Juan Yang, Biao Wu^*

^*Corresponding author for this work

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

32 Citations (Scopus)

Abstract

A tripodal tris(urea) ligand with 2,2′-bipyridyl (bpy) substituents (L) has been designed and synthesized, which coordinates with three equivalents of Ru(bpy) ₂Cl ₂·2H ₂O, followed by treatment with NH ₄PF ₆, to afford the anion receptor [(bpy) ₆Ru ₃L](PF ₆) ₆ (1). The anion-binding behavior of the ligand L and the Ru ^II-bpy functionalized receptor 1 toward different anions was investigated by ¹H NMR (for L and 1), fluorescence, and UV-vis spectroscopy (for 1). Both compounds showed selective recognition of SO ₄ ^2- or H ₂PO ₄ ^- ions in the 1:1 binding mode in the NMR studies. The Ru ^II complex 1 displayed the metal-to-ligand charge transfer emission at 600 nm, which was quenched on addition of the sulfate and dihydrogen phosphate ions. Quantitative fluorescence titration experiments were carried out and the stability constants (log K) of the complex 1 with SO ₄ ^2- and H ₂PO ₄ ^- ions were obtained to be 4.73 and 4.69 M ^-1 (1:1 binding mode), respectively.

Original language	English
Pages (from-to)	7689-7694
Number of pages	6
Journal	Dalton Transactions
Volume	41
Issue number	25
DOIs	https://doi.org/10.1039/c2dt12488b
Publication status	Published - 7 Jul 2012
Externally published	Yes

Access to Document

10.1039/c2dt12488b

Cite this

@article{1378a1a5eb5e468ba270767ec7d41098,

title = "Selective anion sensing by a ruthenium(ii)-bipyridyl-functionalized tripodal tris(urea) receptor",

abstract = "A tripodal tris(urea) ligand with 2,2′-bipyridyl (bpy) substituents (L) has been designed and synthesized, which coordinates with three equivalents of Ru(bpy) 2Cl 2·2H 2O, followed by treatment with NH 4PF 6, to afford the anion receptor [(bpy) 6Ru 3L](PF 6) 6 (1). The anion-binding behavior of the ligand L and the Ru II-bpy functionalized receptor 1 toward different anions was investigated by 1H NMR (for L and 1), fluorescence, and UV-vis spectroscopy (for 1). Both compounds showed selective recognition of SO 4 2- or H 2PO 4 - ions in the 1:1 binding mode in the NMR studies. The Ru II complex 1 displayed the metal-to-ligand charge transfer emission at 600 nm, which was quenched on addition of the sulfate and dihydrogen phosphate ions. Quantitative fluorescence titration experiments were carried out and the stability constants (log K) of the complex 1 with SO 4 2- and H 2PO 4 - ions were obtained to be 4.73 and 4.69 M -1 (1:1 binding mode), respectively.",

author = "Yongjing Hao and Peiju Yang and Shaoguang Li and Xiaojuan Huang and Yang, {Xiao Juan} and Biao Wu",

year = "2012",

month = jul,

day = "7",

doi = "10.1039/c2dt12488b",

language = "English",

volume = "41",

pages = "7689--7694",

journal = "Dalton Transactions",

issn = "1477-9226",

publisher = "Royal Society of Chemistry",

number = "25",

}

TY - JOUR

T1 - Selective anion sensing by a ruthenium(ii)-bipyridyl-functionalized tripodal tris(urea) receptor

AU - Hao, Yongjing

AU - Yang, Peiju

AU - Li, Shaoguang

AU - Huang, Xiaojuan

AU - Yang, Xiao Juan

AU - Wu, Biao

PY - 2012/7/7

Y1 - 2012/7/7

N2 - A tripodal tris(urea) ligand with 2,2′-bipyridyl (bpy) substituents (L) has been designed and synthesized, which coordinates with three equivalents of Ru(bpy) 2Cl 2·2H 2O, followed by treatment with NH 4PF 6, to afford the anion receptor [(bpy) 6Ru 3L](PF 6) 6 (1). The anion-binding behavior of the ligand L and the Ru II-bpy functionalized receptor 1 toward different anions was investigated by 1H NMR (for L and 1), fluorescence, and UV-vis spectroscopy (for 1). Both compounds showed selective recognition of SO 4 2- or H 2PO 4 - ions in the 1:1 binding mode in the NMR studies. The Ru II complex 1 displayed the metal-to-ligand charge transfer emission at 600 nm, which was quenched on addition of the sulfate and dihydrogen phosphate ions. Quantitative fluorescence titration experiments were carried out and the stability constants (log K) of the complex 1 with SO 4 2- and H 2PO 4 - ions were obtained to be 4.73 and 4.69 M -1 (1:1 binding mode), respectively.

AB - A tripodal tris(urea) ligand with 2,2′-bipyridyl (bpy) substituents (L) has been designed and synthesized, which coordinates with three equivalents of Ru(bpy) 2Cl 2·2H 2O, followed by treatment with NH 4PF 6, to afford the anion receptor [(bpy) 6Ru 3L](PF 6) 6 (1). The anion-binding behavior of the ligand L and the Ru II-bpy functionalized receptor 1 toward different anions was investigated by 1H NMR (for L and 1), fluorescence, and UV-vis spectroscopy (for 1). Both compounds showed selective recognition of SO 4 2- or H 2PO 4 - ions in the 1:1 binding mode in the NMR studies. The Ru II complex 1 displayed the metal-to-ligand charge transfer emission at 600 nm, which was quenched on addition of the sulfate and dihydrogen phosphate ions. Quantitative fluorescence titration experiments were carried out and the stability constants (log K) of the complex 1 with SO 4 2- and H 2PO 4 - ions were obtained to be 4.73 and 4.69 M -1 (1:1 binding mode), respectively.

UR - http://www.scopus.com/inward/record.url?scp=84862174848&partnerID=8YFLogxK

U2 - 10.1039/c2dt12488b

DO - 10.1039/c2dt12488b

M3 - Article

C2 - 22622240

AN - SCOPUS:84862174848

SN - 1477-9226

VL - 41

SP - 7689

EP - 7694

JO - Dalton Transactions

JF - Dalton Transactions

IS - 25

ER -

Selective anion sensing by a ruthenium(ii)-bipyridyl-functionalized tripodal tris(urea) receptor

Abstract

Access to Document

Other files and links

Fingerprint

Cite this