Effect of heavy-atom (Br) at the phenyl rings of Schiff-base ligands on the NIR luminescence of their bimetallic Zn-Nd complexes

Wei Yu Bi; Xing Qiang Lü; Wen Li Chai; Ji Rong Song; Rick W K WONG; Xiao Ping Yang; Richard A. Jones

doi:10.1002/zaac.200800137

Effect of heavy-atom (Br) at the phenyl rings of Schiff-base ligands on the NIR luminescence of their bimetallic Zn-Nd complexes

Wei Yu Bi, Xing Qiang Lü^*, Wen Li Chai, Ji Rong Song, Rick W K WONG, Xiao Ping Yang, Richard A. Jones

^*Corresponding author for this work

Department of Chemistry

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

41 Citations (Scopus)

Abstract

Two heterobimetallic Zn-Nd phenylene-bridged Schiff-base ligands complexes [ZnNdL¹(Py)(NO₃)₃] (1) and [ZnL ²Nd(Py)(NO₃)₃]·MeCN (2) (Py = pyridine, H₂L¹ = N,N′-bis-(3-methoxy-salicylidene)phenylene-1, 2-diamine, H₂L²= N,N′-bis-5-bromo-3-methoxy- salicylidene)phenylene-1,2-diamine) were obtained. Both 1 and 2 were structurally characterized by X-ray crystallography, and their near-infrared (NIR) luminescent properties were determined. For the two complexes, the occupation of pyri-dine at the axial position of 3d Zn²⁺ ions could effectively prevent luminescent quenching arising from OH-, NH- or CH oscillators of the solvates around the 4f Nd³⁺ ions, and the heavy-atom (Br) effect of the Schiff-base ligands on their NIR luminescent properties is also discussed.

Original language	English
Pages (from-to)	1795-1800
Number of pages	6
Journal	Zeitschrift fur Anorganische und Allgemeine Chemie
Volume	634
Issue number	10
DOIs	https://doi.org/10.1002/zaac.200800137
Publication status	Published - Aug 2008

Scopus Subject Areas

Inorganic Chemistry

User-Defined Keywords

Heavy-atom effect
Heterobimetallic Zn-Nd Schiff-base complexes
Neodymium
NIR luminescent property
Zinc

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@article{2850cc1e61e84307a4adf54dbdf80175,

title = "Effect of heavy-atom (Br) at the phenyl rings of Schiff-base ligands on the NIR luminescence of their bimetallic Zn-Nd complexes",

abstract = "Two heterobimetallic Zn-Nd phenylene-bridged Schiff-base ligands complexes [ZnNdL1(Py)(NO3)3] (1) and [ZnL 2Nd(Py)(NO3)3]·MeCN (2) (Py = pyridine, H2L1 = N,N′-bis-(3-methoxy-salicylidene)phenylene-1, 2-diamine, H2L2= N,N′-bis-5-bromo-3-methoxy- salicylidene)phenylene-1,2-diamine) were obtained. Both 1 and 2 were structurally characterized by X-ray crystallography, and their near-infrared (NIR) luminescent properties were determined. For the two complexes, the occupation of pyri-dine at the axial position of 3d Zn2+ ions could effectively prevent luminescent quenching arising from OH-, NH- or CH oscillators of the solvates around the 4f Nd3+ ions, and the heavy-atom (Br) effect of the Schiff-base ligands on their NIR luminescent properties is also discussed.",

keywords = "Heavy-atom effect, Heterobimetallic Zn-Nd Schiff-base complexes, Neodymium, NIR luminescent property, Zinc",

author = "Bi, {Wei Yu} and L{\"u}, {Xing Qiang} and Chai, {Wen Li} and Song, {Ji Rong} and WONG, {Rick W K} and Yang, {Xiao Ping} and Jones, {Richard A.}",

year = "2008",

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doi = "10.1002/zaac.200800137",

language = "English",

volume = "634",

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T1 - Effect of heavy-atom (Br) at the phenyl rings of Schiff-base ligands on the NIR luminescence of their bimetallic Zn-Nd complexes

AU - Bi, Wei Yu

AU - Lü, Xing Qiang

AU - Chai, Wen Li

AU - Song, Ji Rong

AU - WONG, Rick W K

AU - Yang, Xiao Ping

AU - Jones, Richard A.

PY - 2008/8

Y1 - 2008/8

N2 - Two heterobimetallic Zn-Nd phenylene-bridged Schiff-base ligands complexes [ZnNdL1(Py)(NO3)3] (1) and [ZnL 2Nd(Py)(NO3)3]·MeCN (2) (Py = pyridine, H2L1 = N,N′-bis-(3-methoxy-salicylidene)phenylene-1, 2-diamine, H2L2= N,N′-bis-5-bromo-3-methoxy- salicylidene)phenylene-1,2-diamine) were obtained. Both 1 and 2 were structurally characterized by X-ray crystallography, and their near-infrared (NIR) luminescent properties were determined. For the two complexes, the occupation of pyri-dine at the axial position of 3d Zn2+ ions could effectively prevent luminescent quenching arising from OH-, NH- or CH oscillators of the solvates around the 4f Nd3+ ions, and the heavy-atom (Br) effect of the Schiff-base ligands on their NIR luminescent properties is also discussed.

AB - Two heterobimetallic Zn-Nd phenylene-bridged Schiff-base ligands complexes [ZnNdL1(Py)(NO3)3] (1) and [ZnL 2Nd(Py)(NO3)3]·MeCN (2) (Py = pyridine, H2L1 = N,N′-bis-(3-methoxy-salicylidene)phenylene-1, 2-diamine, H2L2= N,N′-bis-5-bromo-3-methoxy- salicylidene)phenylene-1,2-diamine) were obtained. Both 1 and 2 were structurally characterized by X-ray crystallography, and their near-infrared (NIR) luminescent properties were determined. For the two complexes, the occupation of pyri-dine at the axial position of 3d Zn2+ ions could effectively prevent luminescent quenching arising from OH-, NH- or CH oscillators of the solvates around the 4f Nd3+ ions, and the heavy-atom (Br) effect of the Schiff-base ligands on their NIR luminescent properties is also discussed.

KW - Heavy-atom effect

KW - Heterobimetallic Zn-Nd Schiff-base complexes

KW - Neodymium

KW - NIR luminescent property

KW - Zinc

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DO - 10.1002/zaac.200800137

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JO - Zeitschrift fur Anorganische und Allgemeine Chemie

JF - Zeitschrift fur Anorganische und Allgemeine Chemie

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Effect of heavy-atom (Br) at the phenyl rings of Schiff-base ligands on the NIR luminescence of their bimetallic Zn-Nd complexes

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