Visible-Light Switching of Metallosupramolecular Assemblies.

ABSTRACT: A photoswitchable ligand and palladium(II) ions form a dynamic mixture of self-assembled metallosupramolecular structures. The photoswitching ligand is an ortho-fluoroazobenzene with appended pyridyl groups. Combining the E-isomer with palladium(II) salts affords a double-walled triangle with composition [Pd₃ L₆ ]⁶⁺ and a distorted tetrahedron [Pd₄ L₈ ]⁸⁺ (1 : 2 ratio at 298 K). Irradiation with 410 nm light generates a photostationary state with approximately 80 % of the E-isomer of the ligand and results in the selective disassembly of the tetrahedron, the more thermodynamically stable structure, and the formation of the triangle, the more kinetically inert product. The triangle is then slowly transformed back into the tet

SUBMITTER: Kennedy ADW 

PROVIDER: S-EPMC9302685 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature