The Effect of Vitamin E and Poly Ethylene Glycol (PEG) Association on Chilled Rabbit Sperm: Impact on Sperm Motility and Oxidative Stress Status.

Background: Vitamin E is the major lipid-soluble antioxidant, however, its potent effect is limited by its poor solubility.

Objective: The present study aimed to investigate whether polyethylene glycol 6000 (PEG) can enhance Vitamin E solubility and help protect sperm motility and against oxidative status.

Materials And Methods: Sperm groups consisted of the control aliquot diluted with Tris buffer and aliquots treated with Tris buffer containing polyethylene glycol (PEG), vitamin E (Vit E) or vitamin E- PEG complex (PEG/Vit E).

Screening the 4f-electron spin of TbPc single-molecule magnets on metal substrates by ligand channeling.

Bis(phthalocyaninato)lanthanide (LnPc) double-decker-based devices have recently attracted a great deal of interest for data encoding purposes. Although the 4f-electrons of lanthanide ions play a key role in the experimental methodology, their localized character, deeper in energy compared to the 3d electrons of transition metals, hampers a detailed investigation. Here, our approach consists of the follow-up of the entanglement process with other molecules and with the substrate electrons by means of space-resolved detection of the Kondo resonance by scanning tunneling spectroscopy (STS), using different substrates (from weak to strong interaction).

Role of π-Radicals in the Spin Connectivity of Clusters and Networks of Tb Double-Decker Single Molecule Magnets.

When single molecule magnets (SMMs) self-assemble into 2D networks on a surface, they interact via the π-electrons of their ligands. This interaction is relevant to the quantum entanglement between molecular qubits, a key issue in quantum computing. Here, we examine the role played by the unpaired radical electron in the top ligand of Tb double-decker SMMs by comparing the spectroscopic features of isolated and 2D assembled entities on surfaces.

Hierarchy of Chemical Bonding in the Synthesis of Fe-Phthalocyanine on Metal Surfaces: A Local Spectroscopy Approach.

Scanning tunneling spectroscopy (STS) has become a key tool for accessing properties of organometallic molecules adsorbed on surfaces. However, the rich variety of signatures makes it sometimes a difficult task to find out which feature is intrinsic to the molecule, i.e.