SCHEDULED MAINTENANCE
Design, synthesis and photoelectrochemical properties of hexagonal metallomacrocycles based on triphenylamine: [M6(4,4′-bis(2,2′:6′,2″-terpyridinyl)triphenylamine)6(X)12]; [M = Fe(ii), PF6− and Zn(ii), BF4−]
Abstract
Synthesis of a novel bis(terpyridine) ligand, 4,4′-bis(2,2′:6′,2″-terpyridinyl)triphenylamine, utilizing triphenylamine, as a specific angle controller, has led to the self-assembly of a unique hexagonal metallomacrocycle family, [Fe6(2)6(PF6)12] and [Zn6(2)6(BF4)12], utilizing terpyridine–metal(II)–terpyridine connectivity. The crystal structure of the novel ligand shows that the angle between the two terpyridinyl moieties is 119.69°, which enabled the formation of the hexagonal-shaped macrocycles. The crystal packing architectures of this starting ligand revealed channels induced by solvent encapsulation. Following complexation of this ligand with transition metals [Fe(II) or Zn(II)] in a one-pot reaction, the resultant structures were characterized by 1H and 13C NMR, UV/Vis and mass spectroscopies. The expected metal-to-ligand charge transfer (MLCT; λmax = 582 nm) and emission (λem = 575 nm) characteristics were exhibited by both [Fe6(2)6(PF6)12] and [Zn6(2)6(BF4)12]. The photoelectrochemical characteristics of these hexagonal metallomacrocycles demonstrate that they can be used as sensitizers in dye-sensitized solar cells.
![Graphical abstract: Design, synthesis and photoelectrochemical properties of hexagonal metallomacrocycles based on triphenylamine: [M6(4,4′-bis(2,2′:6′,2″-terpyridinyl)triphenylamine)6(X)12]; [M = Fe(ii), PF6− and Zn(ii), BF4−]](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=B603691K&imageInfo.ImageIdentifier.Year=2006)
Please wait while we load your content...
