title: Aggregation of asphaltene model compounds using a porphyrin tethered to a carboxylic acid.
abstract: A Ni(II) porphyrin functionalized with an alkyl carboxylic acid (3) has been synthesized to model the chemical behavior of the heaviest portion of petroleum, the asphaltenes. Specifically, porphyrin 3 is used in spectroscopic studies to probe aggregation with a second asphaltene model compound containing basic nitrogen (4), designed to mimic asphaltene behavior. NMR spectroscopy documents self-association of the porphyrin and aggregation with the second model compound in solution, and a Job's plot suggests a 1 : 2 stoichiometry for compounds 3 and 4.
authors.affiliation: Department of Chemistry and Pharmacy & Interdisciplinary Center of Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Henkestraße 42, 91054 Erlangen, Germany. rik.tykwinski@fau.de.
authors.forename: Matthias
authors.initials: M
authors.lastname: Schulze
authors.forename: Marc P
authors.initials: MP
authors.lastname: Lechner
authors.forename: Jeffrey M
authors.initials: JM
authors.lastname: Stryker
authors.forename: Rik R
authors.initials: RR
authors.lastname: Tykwinski
mesh_terms: D000478:Alkylation; D002264:Carboxylic Acids / Q000737:chemistry*; D019281:Dimerization; D009682:Magnetic Resonance Spectroscopy; D009532:Nickel / Q000737:chemistry*; D010578:Petroleum / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000737:chemistry*; D011166:Porphyrins / Q000737:chemistry*
chemical_list: D002264:Carboxylic Acids; D010578:Petroleum; D011084:Polycyclic Aromatic Hydrocarbons; D011166:Porphyrins; C000592077:asphaltene; D009532:Nickel