Charge Transfer Processes in Condensed Media - download pdf or read online

By J. Ulstrup

ISBN-10: 3540095209

ISBN-13: 9783540095200

ISBN-10: 3642931162

ISBN-13: 9783642931161

Molecules in liquid and sturdy media are uncovered to robust inter­ motion forces from the encircling medium. The formula of a accomplished concept of chemical tactics in condensed media is hence an difficult job concerning strategies from numerous components of the typical sciences. in the las~ and a part a long time very remarkable effects in the direction of the formula of a 'unified' quantum mechanical idea of such strategies have actually been completed, and via the diversity of actual, chemical, and organic methods which might be definitely lined by means of this framework, the recent conception represents an sufficient substitute to the transition nation conception. the current paintings has a two-fold objective. first of all, to supply a pretty prepared exposition of a few simple elements of those advancements. This half emphasizes the basic similarities among chemical and different kinds of radiationless techniques and contains the derivation of an important cost expressions with no resorting to concerned mathematical thoughts. The s- ond significant objective is to demonstrate the 'unified' personality of the speed idea via research of a large amount of expe- psychological information from either 'conventional' kinetics and from such untraditional components as low-temperature, strongly exothermic, and organic tactics. specific cognizance is right here given to these structures for which a classical description is insufficient, and which offer a diagnostic contrast among numerous replacement theoretical approaches.

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Additional resources for Charge Transfer Processes in Condensed Media

Sample text

In the nonadiabatic limit the represented in the form of rate expressions are subsequently statistically weighted products of a squared nondiagonal matrix element functions of the tor, coupling the electronic wave donor and acceptor by the perturbation opera- and a Franck Condon factor for overlap of the nuclear wave functions. This analogous to a is both formally and technically completely 'general line shape function' radiationless intramolecular electronic as in optical and transitions. g. the electron transfer between solvated ions, can be viewed as the 37 thermally averaged decay of an 'initially state to a continuum of final states.

Both D(;) and PC;) are valid in the follow- can then be expanded in Fourier series to which only the component in the direction of propagation contributes, i. e. P (r) =L k and ...... D (r) =L... k -, k ..... : kl ... k ... i ki p ... 25) ... D... 26 ) 54 Where and P~ are a set D~ of coefficients .... ~ wave amplitudes. -+ ... ' it also follows that quently P~ = - P~ indicates the complex conjugate. In order to proceed further we notice that for crystalline media harmonic polarization waves are characterised by a few discrete stationary eigenfrequencies the number of which is determined by the number of atoms in the elementary cell, through the representation of P(r) .....

At charge distribu- atomic conf~guration, and would correspond to a transi- this configuration. e. is a measure of the nuclear configuration, during the electron transfer in the acti- independent of the instantaneous charge dis- tribution, whereas the electronic component follows the field of the thus be revers~ble tion electron. transferr~ng shall ~ P~. Just as for the polaron problem, interested in the free energy required for we a formation of the state characterized by the polarizaIn contrast to the polaron problem, however, no longer an equilibr~um An infinite manifold of pairs this is state.

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Charge Transfer Processes in Condensed Media by J. Ulstrup

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