title: Spectrophotometric studies of complexation of C60 with aromatic hydrocarbons.
abstract: The equilibrium constants for complexation of C60 with naphthalene, phenanthrene and pyrene in toluene have been determined by UV visible spectroscopy. The magnitude of the equilibrium constants was found to increase with decreasing ionization potential of the donor. Values for complexation enthalpy have been determined for the first time for C60/aromatic hydrocarbons. Well-defined charge transfer (C-T) bands have been observed for complexes of C60 with a variety of aromatic hydrocarbons, with C-T band maxima moving to higher frequency with increasing donor ionization potential.
authors.affiliation: Chemistry Department, Goucher College, Baltimore, MD 21204, USA.
authors.forename: S P
authors.initials: SP
authors.lastname: Sibley
authors.forename: Y T
authors.initials: YT
authors.lastname: Nguyen
authors.forename: R L
authors.initials: RL
authors.lastname: Campbell
authors.forename: H B
authors.initials: HB
authors.lastname: Silber
mesh_terms: D002244:Carbon / Q000737:chemistry*; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D037741:Fullerenes; D015394:Molecular Structure; D009281:Naphthalenes / Q000737:chemistry; D010616:Phenanthrenes / Q000737:chemistry; D011084:Polycyclic Aromatic Hydrocarbons / Q000737:chemistry*; D011721:Pyrenes / Q000737:chemistry; D013053:Spectrophotometry; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D013816:Thermodynamics
chemical_list: D037741:Fullerenes; D009281:Naphthalenes; D010616:Phenanthrenes; D011084:Polycyclic Aromatic Hydrocarbons; D011721:Pyrenes; C031721:naphthalene; C031181:phenanthrene; D002244:Carbon; C030984:pyrene; C069837:fullerene C60