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Singlet-singlet electronic absorption and polarization in disubstituted naphthalenes

✍ Scribed by Asim Kumar Maiti

Publisher: Elsevier Science
Year: 1987
Tongue: English
Weight: 287 KB
Volume: 134
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(87)87171-3

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✦ Synopsis

The effects of disubstitution at the 2,6-and 2,7-positions of the naphthalene ring in shifting the energies of the 'L, and 'L+ states and altering the direction of the transition moments have been investigated. It is shown that in the 2,6_disubstituted naphthalenes the first ( 'Ls) and second (IL,) excited electronic states overlap and both the transitions are short-axis polarized, whereas in the 2,7_disubstituted compounds these bands are well separated and IL,, and 'L, bands are polarized mainly along the short and long molecular axis, respectively.

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