Study of conformation equilibrium and ¦Ð-¦Ð interaction of porphyrin dimers was written by Ren, Qi-Zhi;Huang, Jin-Wang;Lin, Cui-Wu;Ji, Liang-Nian. And the article was included in Gaodeng Xuexiao Huaxue Xuebao in 1999.Reference of 57412-08-5 The following contents are mentioned in the article:
Porphyrin dimers and their zinc complexes covalently linked with -O(CH2)nO- (n = 2-10) chain were synthesized and characterized. Their steady-state fluorescence spectra show the existence of intramol. energy transfer processes in these free-base porphyrin dimers. The C4 free dimer has the greatest efficiency of energy transfer. By using IR and 1H NMR methods, the relation between the conformation equilibrium and the length of the alkoxy chain and the metal complexation was studied. With increasing chain lengths, the conformation equilibrium of the porphyrin dimers moves to the closed conformation. The length of the C4 dimer was suitable to form the closed conformation. The metalation with zinc ion increases the magnitude of ¦Ð-¦Ð interaction of two porphyrin rings while it does not affect the conformation equilibrium of porphyrin dimers. This study involved multiple reactions and reactants, such as 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5Reference of 57412-08-5).
4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5) belongs to catalyst ligands. Catalytic transformations have become a mainstay in the toolkit of the synthetic and increasing non-synthetic chemist alike. Replacing precious metals with cheaper and more environmentally friendly metals is regarded as a highly desirable goal in the field of catalysis.Reference of 57412-08-5
Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI