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Formation of a Fluorous/Organic Biphasic Supramolecular Octopus Assembly for Enhanced Porphyrin Phosphorescence in Air
Author(s) -
Yang Chi,
Arvapally Ravi K.,
Tekarli Sammer M.,
Salazar Gustavo A.,
Elbjeirami Oussama,
Wang Xiaoping,
Omary Mohammad A.
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201411462
Subject(s) - porphyrin , phosphorescence , supramolecular chemistry , chemistry , molecule , free base , photochemistry , octopus (software) , platinum , catalysis , fluorescence , organic chemistry , physics , salt (chemistry) , computational chemistry , quantum mechanics
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 H 2 OEP serve as excellent octopus hosts (OEP=2,3,7,8,12,13,17,18‐octaethyl‐21 H ,23 H ‐porphine). Coupling of the fluorous/organic molecular octopi 1 and H 2 OEP or PtOEP by strong quadrupole–quadrupole and metal–π interactions affords the supramolecular assemblies [ 1 ⋅PtOEP] or [ 1 ⋅H 2 OEP] ( 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.