English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

The new octacations [(2-Mepy) 8 PzM] 8+ [M = Mg II (H 2 O), Zn II ], isolated as iodide salts, were obtained from the corresponding neutral complexes [Py 8 PzM] (Py = 2-pyridyl; Pz = porphyrazinato dianion) upon quaternization with CH 3 I of the N atoms of the 2-pyridyl rings under mild experimental conditions. The absorption spectra registered in organic solvents as well as in water (H 2 O) confirm the presence of the complexes in their monomeric form in all cases. The two octacations behave as photosensitizers in a H 2 O/sodium dodecyl sulfate solution for the production of singlet oxygen, 1 O 2 , and exhibit quantum yield values (Φ Δ ) 2.2-2.5 higher than those measured for the standard PcAlS mix , a promising feature of interest for photodynamic therapy. The interaction of the Zn II octacation [(2-Mepy) 8 PzZn] 8+ with different types of DNA has been studied by means of optical spectroscopic techniques, clearly suggesting that binding of the charged macrocycle to the DNA effectively takes place. In order to assess the effect of the aromatic ring size, the same binding study was performed for the octapyridinated zinc(II) tetraquinoxalinoporphyrazine complex having a much more expanded macrocyclic framework and compared with the behavior of the parent octapyridinated zinc(II) tetrapyrazinoporphyrazine complex having an intermediate macrocycle. The achieved information confirms the relationship between the binding of the charged macrocycle to the DNA and the dimension of the porphyrazine macrocycle.

inorganic chemistry

Photoactivity of New Octacationic Magnesium(II) and Zinc(II) Porphyrazines in a Water Solution and G-Quadruplex Binding Ability of Differently Sized Zinc(II) Porphyrazines