Discrete polynuclear manganese(<scp>ii</scp>) complexes with thiacalixarene ligands: synthesis, structures and photophysical properties

Suffren, Yan; O'Toole, Niall; Hauser, Andreas; Jeanneau, Erwann; Brioude, Arnaud; Desroches, Cédric

doi:10.1039/c5dt00827a

Cited by 36 publications

(41 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The electroneutrality of the complex is achieved by the presence of the K + cation, coordinated by sulfonyl and methanol groups (Scheme ). The structure of this aggregate, with a sevenfold [MnO 6 F] coordination polyhedron having approximately C 2 v symmetry, has already been discussed in a previous article , . Compound 2 is composed of two manganese(II) ions with a sixfold [MnO 6 ] coordination polyhedron having approximately O h symmetry, and the macrocycle is in 1,2 alternate conformation (Scheme ).…”

Section: Resultsmentioning

confidence: 91%

“…These absorption bands are the signature of the ThiaSO 2 calixarene ligand and correspond to n→π* and π→π* transitions, respectively. The molar extinction coefficient ( ε max ) of the intense absorption band of the dinuclear complex at 28410 cm –1 is equal to 47200 m –1 cm –1 , which is approximately 65 % of the compound 1 ( ε max = 72000 m –1 cm –1 ) studied previously …”

Section: Resultsmentioning

confidence: 98%

“…The decay curves calculated by Igor fitting software varied from 485 µs at 3 K to 114 µs at 293 K . Compared to the tetra‐nuclear complexes, the luminescence lifetimes for 2 are five time lower at low temperature ( τ = 2.12–2.31 ms) …”

Section: Resultsmentioning

confidence: 99%

“…Recently we discovered the strong luminescence, emitted at approximately 600 nm (excitation at 350 nm) by tetranuclear clusters of Mn II ions and two ThiaSO 2 macrocycles (ThiaSO 2 = p-tert-butylsulfonylcalixarene) [(ThiaSO 2 ) 2 (Mn II ) 4 F]K (1), induced by the role of ThiaSO 2 as an antenna for the sensitization of the Mn II ion. [5,6] Spectroscopic studies have allowed us to characterize the high sensitivity of the luminescence quenching by energy transfer from the excited complex to O 2 in the solid state as well as in solution. The rarity of luminescence phenomena for Mn II ions complexes and the extreme sensitivity to oxygen, led us to modify and develop these molecular systems.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Photogeneration of Manganese(III) from Luminescent Manganese(II) Complexes with Thiacalixarene Ligands: Synthesis, Structures and Photophysical Properties

et al. 2018

Self Cite

View full text Add to dashboard Cite

The photophysical properties of the compound [(ThiaSO2)(MnII)2(DMF)4(H2O)2] (2), ThiaSO2 = p‐tert‐butylsulfonylcalix[4]arene, are presented and compared to the ones of [(ThiaSO2)2(MnII)4F]K (1). The orange luminescence of 2 is attributed, as for 1, to the MnII centred 4T1→6A1 transition and shows, for this type of complex, the weak influence of the Mn2+ coordination and ThiaSO2 conformation on this luminescence, the temperature and pressure dependence and quenching by molecular dioxygen of which are reported for 2. The latter is attributed to energy transfer from the 4T1 state exciting dioxygen to its 1Σ+g state and is responsible for the photosynthesis of the [(ThiaSO2)(MnIII)(DMF)2]Na (3) complex in DMF solution from 1 or 2. This reaction was studied by UV/Visible and EPR spectroscopy. The molecular structure and EPR spectroscopy of 3 are also presented.

show abstract

Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Photogeneration of Manganese(III) from Luminescent Manganese(II) Complexes with Thiacalixarene Ligands: Synthesis, Structures and Photophysical Properties

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recent investigations have shown that many manganese(II) complexes display strong photoluminescence with various emitting colors, such as green, yellow, orange, red, etc., [27][28][29][30] originating from d-d transitions. High emissive quantum Adv.…”

Section: Doi: 101002/adma201605739mentioning

confidence: 99%

Green‐Light‐Emitting Diodes based on Tetrabromide Manganese(II) Complex through Solution Process

et al. 2016

View full text Add to dashboard Cite

show abstract

Phosphorescent Manganese(II) Complexes and Their Emerging Applications

Tao

Liu

Wong

2020

Advanced Optical Materials

100

View full text Add to dashboard Cite

light-emitting device (OLED) in 1998, [1] phosphorescent transition-metal complexes, especially for noble metal-based ones (e.g., iridium(III), platinum(II), etc.) as triplet emitters toward highly efficient organic electroluminescence, have aroused extensive attention. [15-21] Owing to strong spin-orbit coupling effect, these complexes may use both singlet and triplet excitons to greatly enhance the efficiency of OLED, breaking the upper limit of the conventional fluorescent device efficiency. Due to their unique properties of excited states, they also have extended their applications in other fields, for instance, catalysis, organic solar cells, organic memory devices, biological sensing and imaging, photodynamic therapy, information recording, and security protection, etc. [22-27] Although extensive works have been done to the design and preparation of phosphorescent materials based on noble metals, these noble metals usually have some disadvantages (such as high cost and low abundance in nature), thereby limiting their practical applications. The relatively abundant and cheap PTMCs of low toxicity have drawn considerable interests very recently. [4,23,24,28-31] Many kinds of non-noble metal-based PTMCs such as copper(I), tungsten(VI), and manganese(II) complexes have emerged rapidly. [4,23-25,28-31] Phosphorescent manganese(II) complexes show great potentials in many applications, due to their features including highly efficient phosphorescence, flexible design in molecular structure, ease of synthesis, and rich physical properties (e.g., triboluminescence, stimuli-responsivity, etc.). [24,25a,32-36] Compared with the noble metals, manganese element with an atomic number of 25 has abundant reserves, is environmentally friendly and inexpensive. Moreover, it has richer valence and coordination mode, which has been widely used in the fields of catalysis, ferroelectric, and magnetic materials. [37-39] Among the various valence states of manganese ion, the divalent manganese ion having a 3d 5 electron configuration has a 4 T 1 − 6 A 1 radiative transition closely related to the crystal field strength. The crystal field strength in the metal complex highly depends on the chemical structure of the ligand and the coordination number. These features make the manganese(II) complexes having rich photophysical properties. By regulating the ligand structure, the organic counterion and the coordination number of the manganese(II) complex, the green, yellow, orange, red, or even near-infrared phosphorescence can be achieved. [23-25,36,40] It Phosphorescent manganese(II) complexes are emerging as a new generation of phosphorescent materials showing great potentials in many applications, owing to their unique features including highly efficient phosphorescence, diverse structural/molecular design, and ease of synthesis, structural diversity, rich physical properties (e.g., triboluminescence, stimuli-responsivity, etc.), high abundance, and low cost. The research on phosphorescent manganese(II) complexes is just in its infancy...

show abstract

Discrete polynuclear manganese(ii) complexes with thiacalixarene ligands: synthesis, structures and photophysical properties

Cited by 36 publications

References 53 publications

Photogeneration of Manganese(III) from Luminescent Manganese(II) Complexes with Thiacalixarene Ligands: Synthesis, Structures and Photophysical Properties

Photogeneration of Manganese(III) from Luminescent Manganese(II) Complexes with Thiacalixarene Ligands: Synthesis, Structures and Photophysical Properties

Green‐Light‐Emitting Diodes based on Tetrabromide Manganese(II) Complex through Solution Process

Phosphorescent Manganese(II) Complexes and Their Emerging Applications

Contact Info

Product

Resources

About