634910-79-5Relevant academic research and scientific papers
A molecular-clip-based approach to cofacial zinc-porphyrin complexes
Kim, Duckhyun,Lee, Sewon,Gao, Guohua,Seok Kang, Hong,Ko, Jaejung
, p. 111 - 119 (2010)
We have synthesized molecular-clip-based cofacial zinc-porphyrin complexes. The complexes are shown to be new efficient receptors for the complexation of 1,4-diazabicyclo[2,2,2]octane, acridinium ions, 1,4,5,8-naphthalene tetracarboxylic dianhydride (NTDA) and 1,2,4,5-benzenetetracarboxylic dianhydride (BTDA). Large binding constants (Kasso) in the range of 2.0 × 104-1.1 × 108 M-1 were obtained for the 1:1 complexes of molecular tweezers (3) and rectangle (8) by inserting the hosts between the two porphyrin rings. The values of K and the spectroscopic results suggest that 3 and 8 serve as effective building blocks to capture the hosts. Semi-empirical calculations show that the guests position themselves within the cleft of the bis-porphyrins.
