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The intramolecular external heavy atom effect in bromo-, benzo-, and naphthonorbornenes

Chandra, AK and Turro, NJ and Lyons Jr, AL and Stone, P (1978) The intramolecular external heavy atom effect in bromo-, benzo-, and naphthonorbornenes. In: Journal of the American Chemical Society, 100 (16). pp. 4964-4968.

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Official URL: http://pubs.acs.org/doi/abs/10.1021/ja00484a007


A theoretical analysis of the external heavy atom effect of a halogen atom on the radiative rate constant of phosphorescence is examined as a function of position of a bromine atom or atoms relative to a naphthalene or a benzene chromophore for a series of mono- and dibromo-, naphtho-, and benzonorbornenes. The theoretical results are then compared to experimentaldata and lead to the conclusion that the enhancement of the phosphorescence process takes place through the second-ordermixing of the triplet states of the chromophore with the singlet charge transfer states arising primarily from an electron transferfrom the orbitals of the heavy atom perturber to the unfilled x* orbitals of the chromophore.

Item Type: Journal Article
Publication: Journal of the American Chemical Society
Publisher: American Chemical Society
Additional Information: Copyright of this article belongs to American Chemical Society.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 11 Oct 2010 06:32
Last Modified: 11 Oct 2010 06:32
URI: http://eprints.iisc.ac.in/id/eprint/32954

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