Formation of a fluorous/organic biphasic supramolecular octopus assembly for enhanced porphyrin phosphorescence in air.
The trinuclear triangle-shaped system [tris{3,5-bis(heptafluoropropyl)-1,2,4-triazolatosilver(I)}] (1) and the multi-armed square-shaped metalloporphyrin PtOEP or the free porphyrin base H2OEP serve as excellent octopus hosts (OEP=2,3,7,8,12,13,17,18-octaethyl-21H,23H-porphine). Coupling of the fluorous/organic molecular octopi 1 and H2OEP or PtOEP by strong quadrupole-quadrupole and metal-π interactions affords the supramolecular assemblies [1⋅PtOEP] or [1⋅H2OEP] (2 a), which feature nanoscopic cavities surrounding the upper triangular and lower square cores. The fluorous/organic biphasic configuration of [1⋅PtOEP] leads to an increase in the phosphorescence of PtOEP under ambient conditions. Guest molecules can be included in the biphasic double-octopus assembly in three different site-selective modes.
Department of Chemistry, University of North Texas, Denton, TX 76203 (USA). chi.yang@unt.edu.
Chi
C
Yang
Ravi K
RK
Arvapally
Sammer M
SM
Tekarli
Gustavo A
GA
Salazar
Oussama
O
Elbjeirami
Xiaoping
X
Wang
Mohammad A
MA
Omary
fluorine; heterocycles; luminescent materials; porphyrins; supramolecular chemistry