The Energy of the Excimer Luminescence of Naphthalene under a Variety of Geometrical Configurations

A four-electron ASMO treatment of the interaction of two naphthalene molecules to yield excimers of D2h, C2, or S4 is developed, and the energies of these excimers are calculated as a function of the angle, α, between corresponding bonds of the two molecules. It is shown that excimers are stable at two configurations, α=0° and α=75°; that the excimer with α=0° does not emit because of the forbidden character of the transition, and that the excimer with α=75° emits and is considered to play a predominant role in the observed excimer fluorescence.

[1]  J. Birks,et al.  ‘Excimer’ fluorescence - VIII. Lifetime studies of 1,6-dimethyl naphthalene , 1966, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[2]  F. J. Smith,et al.  DELAYED EXCIMER FLUORESCENCE OF PYRENE. , 1965 .

[3]  S. McGlynn,et al.  Energy of Excimer Luminescence. III. Group Theoretical Considerations of Molecular Exciton and Charge Resonance States , 1965 .

[4]  S. McGlynn,et al.  Energy of Excimer Luminescence. II. Configuration Interaction between Molecular Exciton States and Charge Resonance States , 1964 .

[5]  S. McGlynn,et al.  Energy of Excimer Luminescence. I. A Reconsideration of Excimer Processes , 1964 .

[6]  J. Birks,et al.  'Excimer’ fluorescence III. Lifetime studies of 1:2-benzanthracene derivatives in solution , 1964, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[7]  J. Murrell,et al.  The theory of the electronic spectra of aromatic hydrocarbon dimers , 1964 .

[8]  I. H. Munro,et al.  'Excimer’ fluorescence II. Lifetime studies of pyrene solutions , 1963, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[9]  C. A. Parker.  Delayed Fluorescence of 3 : 4-Benzpyrene Solutions , 1963, Nature.

[10]  J. Tanaka,et al.  Delayed Fluorescence Spectrum of Pyrene Solutions at Low Temperatures , 1963, Nature.

[11]  C. A. Parker,et al.  Delayed fluorescence of pyrene in ethanol , 1963 .

[12]  G. C. Nieman,et al.  Rapid Triplet Excitation Migration in Organic Crystals , 1962 .

[13]  Th. Förster,et al.  Der Konzentrationsumschlag der Fluoreszenz des Naphthalins , 1962 .

[14]  R. Parr.  Three Remarks on Molecular Orbital Theory of Complex Molecules , 1960 .

[15]  Rudolph Pariser,et al.  Theory of the Electronic Spectra and Structure of the Polyacenes and of Alternant Hydrocarbons , 1956 .

[16]  R. Parr,et al.  On Certain Integrals Useful in Molecular Orbital Calculations , 1948 .

[17]  Robert S. Mulliken,et al.  A New Electroaffinity Scale; Together with Data on Valence States and on Valence Ionization Potentials and Electron Affinities , 1934 .