dc.creator Hochstrasser, Robin M. en_US dc.creator Whiteman, John D. en_US dc.date.accessioned 2006-06-15T16:50:57Z dc.date.available 2006-06-15T16:50:57Z dc.date.issued 1969 en_US dc.identifier 1969-I-11 en_US dc.identifier.uri http://hdl.handle.net/1811/15724 dc.description Author Institution: Laboratory for Research on The Structure of Matter, University of Pennsylvania en_US dc.description.abstract Previously, the full width and structure of triplet exciton bands in organic molecular crystals have eluded direct experimental observation because of the symmetry restriction for electric dipole transitions to $K \neq 0$ states. Crystals, in which interactions between translationally inequivalent sites are small, may be treated as one dimensional linear chains. By substituting appropriate impurity molecules into the chain, polymers of various lengths are isolated. The optically allowed energy levels of each N-Mer fall within the bandwidth of the neat crystal. Because the triplet state is being observed, a nearest neighbor approximation to the interaction energy is valid; the exchange energy, density of states, and exciton bandwidth are then experimentally measurable. Spectral results will be presented from which these quantities may be directly obtained. This new technique readily provides the interaction between translationally equivalent molecules which in the usual case just contributes to the spectral shift. en_US dc.format.extent 149057 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title THE DETERMINATION OF THE TRIPLET EXCITON BAND STRUCTURE. en_US dc.type article en_US
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