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Porphyrin Supramolecular Arrays Formed by Weakly Interacting Meso-Functional Groups on Au(111)
Esteban Sánchez-Muñoz1, José L Gárate-Morales1, Jacinto Sandoval-Lira1
1Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, 22 Sur y Av San Claudio CU, Puebla 72570, Mexico.
Abstract:
The formation of a binary porphyrinic self-assembled system between meso-tetrakis(4-carboxyphenyl) porphyrin (TCPP) and meso-tetrakis(4-dimethyl amino) porphyrin (TDAP) was easily designed through non-covalent interactions in solution and adsorbed on a gold substrate. It was found that non-covalent interactions and geometrical conformations between porphyrins allow their self-assembly into a well-defined arrangement, which was confirmed by UV-Vis spectroscopy, electrochemistry, atomic force microscopy and density functional theory (DFT) studies.
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