Two aminobenzothiazole derivatives for Pd(II) and Zn(II) coordination

Caruso, Ugo; Panunzi, Barbara; Roviello, Antonio; Tingoli, Marco; Tuzi, Angela

doi:10.1016/j.inoche.2010.09.027

Cited by 33 publications

(17 citation statements)

References 9 publications

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“…We previously proposed a coordination approach based on the use of O , N , O ligands for transition metals as copper, nickel, palladium, cadmium and zinc [25,47,48,49] leading to highly stable complexes. Due to its closed-shell pattern and to the biocompatibility, zinc ion is a good candidate for devices production.…”

Section: Resultsmentioning

confidence: 99%

A Highly Efficient White Luminescent Zinc (II) Based Metallopolymer by RGB Approach

2019

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Three aryl-hydrazone O,N,O tridentate ligands with a different electron-withdrawing substituent were prepared. The introduction of a flexible charged chain in the ligands guaranteed solubility in many organic solvents and in water. The increasing withdrawing aptitude of the substituents red-shifted the emission in the correspondent metallopolymers. The metallated polymers were obtained by grafting ligand-zinc (II) coordination fragments onto commercial poly-(4-vinylpyridine). Metallopolymers thin films exhibited red, green and blue emission colors defined by Commission Internationale d’Eclairage (CIE) coordinates and medium to excellent photoluminescence (PL) quantum yields (PLQYs) comparable with other highly-performing active materials for Light-Emitting Diodes (LEDs). By grafting a suitable mix of the three different coordination pendants, an efficient single-component white emissive metallopolymer with CIE (0.30, 0.31) was prepared. Thanks to the charged moiety, the polymers resulted miscible with an ionic liquid. The addition produced homogeneous polymeric layers with unaltered PL performances, potentially employable in Light-emitting Electrochemical Cells (LECs).

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Section: Resultsmentioning

confidence: 99%

A Highly Efficient White Luminescent Zinc (II) Based Metallopolymer by RGB Approach

2019

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“…Real breakthroughs for the novel luminescent technologies were obtained by employing highly efficient, stable, and cheap emitters. Among them, several zinc(II) complexes have to be included [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

The Role of Zinc(II) Ion in Fluorescence Tuning of Tridentate Pincers: A Review

Diana

Panunzi

2020

Molecules

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Tridentate ligands are simple low-cost pincers, easy to synthetize, and able to guarantee stability to the derived complexes. On the other hand, due to its unique mix of structural and optical properties, zinc(II) ion is an excellent candidate to modulate the emission pattern as desired. The present work is an overview of selected articles about zinc(II) complexes showing a tuned fluorescence response with respect to their tridentate ligands. A classification of the tridentate pincers was carried out according to the binding donor atom groups, specifically nitrogen, oxygen, and sulfur donor atoms, and depending on the structure obtained upon coordination. Fluorescence properties of the ligands and the related complexes were compared and discussed both in solution and in the solid state, keeping an eye on possible applications.

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“…The role of zinc (II) ions in the construction of PL structures previously attracted our attention [66,67,68]. The use of a closed-shell d 10 metal ion is usually a cause for increasing rigidity of the molecular structure with a decreased probability of non-radiative decay of the excited states.…”

Section: Resultsmentioning

confidence: 99%

The Effect of Bulky Substituents on Two π-Conjugated Mesogenic Fluorophores. Their Organic Polymers and Zinc-Bridged Luminescent Networks

et al. 2019

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From a dicyano-phenylenevinylene (PV) and an azobenzene (AB) skeleton, two new symmetrical salen dyes were obtained. Terminal bulky substituents able to reduce intermolecular interactions and flexible tails to guarantee solubility were added to the fluorogenic cores. Photochemical performances were investigated on the small molecules in solution, as neat crystals and as dopants in polymeric matrixes. High fluorescence quantum yield in the orange-red region was observed for the brightest emissive films (88% yield). The spectra of absorption and fluorescence were predicted by Density Functional Theory (DFT) calculations. The predicted energy levels of the frontier orbitals are in good agreement with voltammetry and molecular spectroscopy measures. Employing the two dyes as dopants of a nematic polymer led to remarkable orange or yellow luminescence, which dramatically decreases in on-off switch mode after liquid crystal (LC) order was lost. The fluorogenic cores were also embedded in organic polymers and self-assembly zinc coordination networks to transfer the emission properties to a macro-system. The final polymers emit from red to yellow both in solution and in the solid state and their photoluminescence (PL) performance are, in some cases, enhanced when compared to the fluorogenic cores.

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Two aminobenzothiazole derivatives for Pd(II) and Zn(II) coordination

Cited by 33 publications

References 9 publications

A Highly Efficient White Luminescent Zinc (II) Based Metallopolymer by RGB Approach

A Highly Efficient White Luminescent Zinc (II) Based Metallopolymer by RGB Approach

The Role of Zinc(II) Ion in Fluorescence Tuning of Tridentate Pincers: A Review

The Effect of Bulky Substituents on Two π-Conjugated Mesogenic Fluorophores. Their Organic Polymers and Zinc-Bridged Luminescent Networks

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