Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Energy Order of Dimer Exciton States

FIGURE 14.7 Orientation of dimers in two cases (left) stacked and (right) head to tail. [Pg.367]

we will give the quantum mechanical proof. In classical mechanics, oscillating dipoles behave in the same way. In the Bohr-Sommerfeld picture ( old quantum theory ), the transition moments are also oscillating dipoles, but contrary to the classical case, only two quantized states are possible at the end. [Pg.368]

Assume now that cf) and ct) are orbitals on one atom or molecule and ( )j and ), are orbitals on another atom or molecule, at some distance from the first one. We are interested in the matrix element (ai jb) (Mulliken notation), which is the main term in the right member of Equation 14.10. We will show that this interaction matrix element can be described as an interaction between the two distant transition charge distributions, c )a( )i and c )j( )b. [Pg.368]

The charge distributions c )a(l)i and )j )b may be replaced by a number of point charges Qi, Qj, Qs. on each molecule, sufficieutly deusely disposed to represent the total, continuous charge distribution of the electrons. We first calculate the potential in the point r at some distance from the molecule. [Pg.368]

FIGURE 14.8 Calculation of the potential in the point r from a number of point charges in [Pg.368]


See other pages where Energy Order of Dimer Exciton States is mentioned: [Pg.367]   


SEARCH



Dimerization energy

Exciton

Exciton state

Exciton/excitonic

Excitons

Ordered state

Ordering energy

© 2024 chempedia.info