Syntheses, structures, and photoluminescence of 1-D lanthanide coordination polymers

Yang, Xiaoping; Jones, Richard A.; Rivers, Joseph H.; Wong, Wai‐Kwok

doi:10.1039/b910588c

Cited by 51 publications

(19 citation statements)

References 47 publications

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“…NIR luminescence of 2 in CH 3 CN at room temperature. [58] The stoichiometry and structures of these compounds are dependent on the Schiff base ligand employed in their syntheses as well as on the nature of the anion present (CF 3 SO 3 vs. OAc -). [57] By applying more flexible Schiff base ligands H 2 L 2 and H 2 L 3 , four 1D coordination lanthanide polymers {[Ln 2 (L 2 ) 2 (CF 3 SO 3 )(H 2 L 2 ) 4 (MeOH)]·CF 3 SO 3 } n {Ln = Nd (3) and Er (4)}, [Yb 2 (L 2 ) 2 (OAc) 2 (MeOH) 2 ] n (5), and [Er 2 (H 2 L 3 )(OAc) 6 ] n (6) have been prepared and structurally characterized.…”

Section: Multimetallic Lanthanide Schiff Base Assembliesmentioning

confidence: 99%

“…As shown in Figure 19, each Nd(1) ion is coordinated to a deprotonated salen group (L 2 ) 2and two neutral salen ligands H 2 L 2 , while Nd(2) is coordinated to three salen ligands and one (L 2 ) 2ligand. [58] Reproduced by permission of The Royal Society of Chemistry. In 5, each Yb III ion is bound by the N 2 O 2 cavity of a deprotonated salen ligand and is eight coordinate (Figure 20).…”

Section: Multimetallic Lanthanide Schiff Base Assembliesmentioning

confidence: 99%

“…[58] Reproduced by permission of The Royal Society of Chemistry. [58] Reproduced by permission of The Royal Society of Chemistry. A view of the molecular structure of 6.…”

Section: Multimetallic Lanthanide Schiff Base Assembliesmentioning

confidence: 99%

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Design and Synthesis of Near‐Infrared Emissive Lanthanide Complexes Based on Macrocyclic Ligands

Zhu¹,

Wong²,

Yang

2011

Eur J Inorg Chem

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This review firstly summarizes our recent work on the preparation and photophysical properties of cationic or neutral lanthanide(III) monoporphyrinate complexes, as well as some bridging dinuclear complexes, in which the porphyrinate anion can sensitize the NIR emission of NdIII, YbIII and ErIII ions by serving as an antenna that absorbs visible light and transfers the energy to the excited state of the lanthanide(III) ion, followed by relaxation through the NIR emission. Next, several d–f heterobimetallic diporphyrin complexes, in which a transition metal (M = Zn, Pd, and Pt) porphyrinate moiety serves as a donor by transferring its energy to the Yb3+ ion and enhances the NIR emission, are described. In addition, the synthesis and photophysical properties of some GdIII porphyrinate complexes and monophthalocyaninato lanthanide complexes are also described in this contribution. Apart from the above compounds, we also discuss the construction of multidecker multimetallic lanthanide Schiff base assemblies, which demonstrate that these varieties of salen‐type Schiff base ligands can stabilize LnIII centers and provide the antenna for lanthanide luminescence. By taking advantage of the absorption and emission properties of transition‐metal Schiff base complexes, multinuclear and polynuclear ZnII–LnIII Schiff base complexes have also been constructed with improved luminescence properties.

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Section: Multimetallic Lanthanide Schiff Base Assembliesmentioning

confidence: 99%

Section: Multimetallic Lanthanide Schiff Base Assembliesmentioning

confidence: 99%

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Design and Synthesis of Near‐Infrared Emissive Lanthanide Complexes Based on Macrocyclic Ligands

Zhu¹,

Wong²,

Yang

2011

Eur J Inorg Chem

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“…In both heterometallic systems, the relatively "soft" Lewis acid 3d Zn 2+ ion usually lies in the cis-N 2 O 2 core of the ligand and the "hard" Lewis acid 4f Ln 3+ ion necessarily occupies the outer O 2 O 2 moiety, and the Zn 2+ Schiff-base complexes, as the suitable chromophores, could effectively sensitize of the NIR luminescence of the Ln 3+ ions. As a matter of fact, it is well known that the coordination of Ln 3+ ion in the inner cis-N 2 O 2 core is common as shown in polynuclear [21,22] or polymeric Ln 3+ Salen complexes [23]. To some extent, it should make self-assembly of 3d and 4f mixed metal complexes from the Salen-type Schiff-base ligands with the outer O 2 O 2 moieties more complicated, which stimulates us to further explore new bimetallic polynuclear complexes with coordination modes of Ln 3+ ions in both the cis-N 2 O 2 cores and the outer O 2 O 2 cavities.…”

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confidence: 99%

Mixed anion-induced Salen-based Zn2Ln3 (Ln=Nd, Yb or Er) complexes with near-infrared (NIR) luminescent properties

Feng

Zhang

Feng

et al. 2014

Inorganic Chemistry Communications

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“…Lanthanide ions indicate high coordination numbers, variable, and flexible coordination environments [19,20]. Schiff-base salen-type ligands are very flexible compounds, and the combination of these species has great potential in the synthesis of novel and unusual coordination compounds of mononuclear [21,22], polynuclear [23] or polymer [24][25][26][27]-type complexes.…”

Section: Introductionmentioning

confidence: 99%

Potentiometric determination of novel complexes of selected lanthanide ions with N,N’-bis(5-methylsalicylidene)-4-methyl-1,3-phenylenediamine

2017

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The stability constants of the complexes formed in the N,N '-bis(5-methylsalicylidene)-4-methyl-1,3-phenylenediamine (H 2 L) and La(III), Eu(III), Gd(III), Ho(III), and Lu(III) ion systems were determined in solution with the potentiometric method. The pH-metric titrations were performed in dimethyl sulfoxide/water (v:v, 30:70) mixture at 25.0 °C in 0.1 M LiNO 3 ionic strength. The tests were performed for systems with Ln(III) to H 2 L 1:2 and 1:3 molar ratio but only data of the systems with the metal/ligand ratio 1:2 were taken into calculation. The molar ratio 1:1 was not studied because of the high coordination numbers of the lanthanide ions, and inadequate donor atoms of the ligand. Computer analysis (HYPERQUAD software) of potentiometric data indicated that in solution the lanthanide (Ln) complexes exist as LnL 2 , Ln(HL) 2 , and Ln(H 2 L) 2 forms, depending on pH unlike to the solid state where only one form of Ln(H 2 L) 2 occurs. Formation constants increase with decreasing size of the Ln(III) ions. Moreover, complex formation in the Ln 3+ /H 2 L systems in solution was performed using UV-Vis spectrophotometric titration.

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Syntheses, structures, and photoluminescence of 1-D lanthanide coordination polymers

Cited by 51 publications

References 47 publications

Design and Synthesis of Near‐Infrared Emissive Lanthanide Complexes Based on Macrocyclic Ligands

Design and Synthesis of Near‐Infrared Emissive Lanthanide Complexes Based on Macrocyclic Ligands

Mixed anion-induced Salen-based Zn2Ln3 (Ln=Nd, Yb or Er) complexes with near-infrared (NIR) luminescent properties

Potentiometric determination of novel complexes of selected lanthanide ions with N,N’-bis(5-methylsalicylidene)-4-methyl-1,3-phenylenediamine

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