《Destructive-quantum-interference suppression in crown ether single molecule junction》 was published in European Physical Journal B: Condensed Matter and Complex Systems in 2020. These research results belong to Mijbil, Zainelabideen Y.; Essa, Haider O.. Quality Control of 1,4,7,10,13-Pentaoxacyclopentadecane The article mentions the following:
The electronic transmission coefficient of X-crown ether-Y (X = 3Y ;Y = 4, 5, and 6) have been investigated using d. functional theory and Green’s function approximation incorporated with the Huckel method. The results illustrate unexpected role of the oxygen atoms to highly enhance charge transport in the crown ether mols. by moving the destructive quantum interferences (QI) close to the Fermi level. Such slight shifting creates a beneficial peak-valley pattern in the transmission spectra that facilitates the ON/OFF variation. Moreover, the length of the crown ether rings offers an insignificant impact on electronic transmission. Hence, we believe that these findings would deepen our understanding of QI patterns and exploit crown ether mols. more practically and efficiently in mol. devices. The results came from multiple reactions, including the reaction of 1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5Quality Control of 1,4,7,10,13-Pentaoxacyclopentadecane)
1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. Quality Control of 1,4,7,10,13-Pentaoxacyclopentadecane
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem