Photoinduced IRAV Studies

Linear IR absorption studies proved that there is no interaction between the conjugated polymer backbone and the Ceo molecule in the ground state, as al- 

Fi ure 15-7. (a) Photoinduced IR absorption spectra of P3OT and P3() I /((5%) at 80 K obtained by pumping with an Argon ion laser at 2.41 eV (reproduced by permission of the American Physical Society from Ref. [32]). 

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Observation of the charged carrier is even more favourable in the IR regime (photoinduced IRAV studies). In semiconducting, conjugated polymers, the quasi-one-dimensional electronic structure has to be strongly coupled to the chemical (geometrical) structure. As a result, nonlinear excitations (solitons, polarons and polaron pairs) are dressed with local structural... 

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