Synthesis, structure and solid luminescence of copper(I)–bromodiimine–diphosphine complexes

Feng, Xiaoyan; Xin, Xue-Lian; Guo, Ya-Meng; Liang, Yuying; Xu, Mu; Li, Xiuling

doi:10.1016/j.poly.2015.07.053

Cited by 15 publications

(18 citation statements)

References 42 publications

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“…The high energy absorptions (λ < 345 nm) are assigned to ligand-centred, spin-allowed transitions. The broad absorption bands with λ max in the range 415-420 nm (Table 3) ] is consistent with that reported for the corresponding perchlorate salt [26]. For both the POP-and xantphos-containing complexes, Figure 7 illustrates an increase in values of ε max on going from 2,9-Br 2 phen to 3,8-Br 2 phen to 4,7-Br 2 phen.…”

Section: Photophysical Propertiessupporting

confidence: 84%

“…The broad absorption bands with λmax in the range 415-420 nm (Table 3) arise from metal-to-ligand charge transfer (MLCT). The profile of the absorption spectrum of [Cu(xantphos)(3,8-Br2phen)][PF6] is consistent with that reported for the corresponding perchlorate salt [26]. For both the POP-and xantphos-containing complexes, Figure 7 illustrates an increase in values of εmax on going from 2,9-Br2phen to 3,8-Br2phen to 4,7-Br2phen.…”

Section: Photophysical Propertiessupporting

confidence: 82%

“…Table 4 for λexc. [26], and may reflect differences in solid-state packing interactions. Each solid-state emission maximum is blue-shifted with respect to solution (Table 4) Table 4 for λ exc .…”

Section: Photophysical Propertiesmentioning

confidence: 99%

“…These compounds emit weakly in CH 2 Cl 2 solution, but in mixtures of CH 2 Cl 2 and hexane, they exhibit aggregation-induced phosphorescent emission [25]. Feng et al [26]…”

Section: Introductionmentioning

confidence: 99%

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Heteroleptic [Cu(P^P)(N^N)][PF6] Compounds with Isomeric Dibromo-1,10-Phenanthroline Ligands

et al. 2020

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A series of [Cu(P^P)(N^N)][PF6] compounds are reported in which N^N is 2,9-dibromo-1,10-phenanthroline (2,9-Br2phen), 3,8-dibromo-1,10-phenanthroline (3,8-Br2phen) or 4,7-dibromo-1,10-phenanthroline (4,7-Br2phen) and P^P is bis(2-(diphenylphosphano)phenyl)ether (POP) or 4,5-bis(diphenylphosphano)-9,9-dimethylxanthene (xantphos). The compounds were characterized by solution multinuclear NMR spectroscopy, mass spectrometry and a single-crystal X-ray analysis. Each compound underwent a partially reversible or irreversible copper-centred oxidation, the highest potential being for 2,9-Br2phen-containing compounds. In solution, the compounds are weak yellow or orange emitters, whereas powdered samples exhibit yellow emissions with photoluminescence quantum yields of up to 45% for [Cu(xantphos)(2,9-Br2phen)][PF6] with an excited state lifetime τ1/2 = 9.9 μs. Values of λemmax for [Cu(POP)(2,9-Br2phen)][PF6] and [Cu(xantphos)(2,9-Br2phen)][PF6] are blue-shifted with respect to compounds with the 3,8-and 4,7-isomers, both in solution and in the solid state.

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Section: Photophysical Propertiessupporting

confidence: 84%

Section: Photophysical Propertiessupporting

confidence: 82%

Section: Photophysical Propertiesmentioning

confidence: 99%

“…These compounds emit weakly in CH 2 Cl 2 solution, but in mixtures of CH 2 Cl 2 and hexane, they exhibit aggregation-induced phosphorescent emission [25]. Feng et al [26]…”

Section: Introductionmentioning

confidence: 99%

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Heteroleptic [Cu(P^P)(N^N)][PF6] Compounds with Isomeric Dibromo-1,10-Phenanthroline Ligands

et al. 2020

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“…[1][2][3][4] Because the d 10 electron configuration of Cu(I) does not require a pre-defined spatial arrangement of the ligands (L), the coordination sphere is generally determined by molecular mechanics and electrostatic factors. 1,5 Among the CuX halides (X = F, Cl, Br or I) mostly used as precursors for the synthesis of these complexes, Cu(I) iodide (CuI) offers the advantages of higher chemical stability in oxidizing atmosphere and higher quantum efficiencies.…”

Section: Introductionmentioning

confidence: 99%

The polynuclear complex Cu₄I₄py₄ loaded in mesoporous silica: photophysics, theoretical investigation, and highly sensitive oxygen sensing application

et al. 2016

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The polynuclear Cu4I4py4 complex has been largely studied in solution and in the powder form due to its interesting luminescent properties, which are largely dependent on temperature and pressure. In this work, we present the synthesis of the complex and its wet impregnation in a mesoporous silica host obtained by sol-gel methodology. For optimized guest loadings, the well-dispersed guest molecules exhibit strong interaction with molecular oxygen, resulting in a significant quenching of the luminescence. The process is highly reversible with a Stern-Volmer constant of Ksv = 33.8, which is the largest value found in the literature for similar complexes in the solid state, suggesting that the new material is a promising candidate for high sensitivity oxygen sensing. Density Functional Theory (DFT) and Time-Dependent DFT (TD-DFT) calculations reveal a weak intermolecular interaction between two guest complexes in the excited state, suggesting the formation of an excited state complex (excimer). The assumption of triplet excimer formation is confirmed by temperature-and concentration-dependent experiments, which provides a new way to explain the giant Stokes shift observed for the guest complex in different media.

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Coordination chemistry of copper(I) complexes with bis(phosphine) ligands

Thomas

Madarasi

Sivasankar

et al. 2019

Copper(I) Chemistry of Phosphines, Functionalized Phosphines and Phosphorus Heterocycles

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Synthesis, structure and solid luminescence of copper(I)–bromodiimine–diphosphine complexes

Cited by 15 publications

References 42 publications

Heteroleptic [Cu(P^P)(N^N)][PF6] Compounds with Isomeric Dibromo-1,10-Phenanthroline Ligands

Heteroleptic [Cu(P^P)(N^N)][PF6] Compounds with Isomeric Dibromo-1,10-Phenanthroline Ligands

The polynuclear complex Cu₄I₄py₄ loaded in mesoporous silica: photophysics, theoretical investigation, and highly sensitive oxygen sensing application

Coordination chemistry of copper(I) complexes with bis(phosphine) ligands

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Synthesis, structure and solid luminescence of copper(I)–bromodiimine–diphosphine complexes

Cited by 15 publications

References 42 publications

Heteroleptic [Cu(P^P)(N^N)][PF6] Compounds with Isomeric Dibromo-1,10-Phenanthroline Ligands

Heteroleptic [Cu(P^P)(N^N)][PF6] Compounds with Isomeric Dibromo-1,10-Phenanthroline Ligands

The polynuclear complex Cu4I4py4 loaded in mesoporous silica: photophysics, theoretical investigation, and highly sensitive oxygen sensing application

Coordination chemistry of copper(I) complexes with bis(phosphine) ligands

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Product

Resources

About

The polynuclear complex Cu₄I₄py₄ loaded in mesoporous silica: photophysics, theoretical investigation, and highly sensitive oxygen sensing application