91947-22-7Relevant academic research and scientific papers
Inducing Open-Shell Character in Porphyrins through Surface-Assisted Phenalenyl π-Extension
Bottari, Giovanni,Fasel, Roman,Lorente, Nicolas,Mateo, Luis M.,Robles, Roberto,Ruffieux, Pascal,Sun, Qiang,Torres, Tomás
supporting information, p. 18109 - 18117 (2020/11/26)
Organic open-shell compounds are extraordinarily attractive materials for their use in molecular spintronics thanks to their long spin-relaxation times and structural flexibility. Porphyrins (Pors) have widely been used as molecular platforms to craft persistent open-shell structures through solution-based redox chemistry. However, very few examples of inherently open-shell Pors have been reported, which are typically obtained through the fusion of non-Kekulé polyaromatic hydrocarbon moieties to the Por core. The inherent instability and low solubility of these radical species, however, requires the use of bulky substituents and multistep synthetic approaches. On-surface synthesis has emerged as a powerful tool to overcome such limitations, giving access to structures that cannot be obtained through classical methods. Herein, we present a simple and straightforward method for the on-surface synthesis of phenalenyl-fused Pors using readily available molecular precursors. In a systematic study, we examine the structural and electronic properties of three surface-supported Pors, bearing zero, two (PorA2), and four (PorA4) meso-fused phenalenyl moieties. Through atomically resolved real-space imaging by scanning probe microscopy and high-resolution scanning tunneling spectroscopy combined with density functional theory calculations, we unambiguously demonstrate a triplet ground state for PorA2 and a charge-transfer-induced open-shell character for the intrinsically closed-shell PorA4.
Influence of Hydrogen Ion Activity and General Acid-Base Catalysis on the Rate of Decomposition of Hydrogen Peroxide by a Novel Nonaggregating Water-Soluble Iron(III) Tetraphenylporphyrin Derivative
Zipplies, Matthias F.,Lee, William A.,Bruice, Thomas C.
, p. 4433 - 4445 (2007/10/02)
The synthesis and characterization of 5,10,15,20-tetrakis(2,6-dimethyl-3-sulfonatophenyl)porphyrin (3) and its iron(III) complex (3-FeIII) are described.Both 3 and 3-FeIII hydrate exist as a mixture of atropisomers due to the dissymm
