COUPLING OF HIGH-FREQUENCY PHONONS TO THE ELECTRONIC-TRANSITIONS OF IMPURITY MOLECULES IN POLYMER MATRICES

Persistent holes were burned in the S-1 <-- S-0 transition of 2,7,12,1 7-tetra-tert-butyl-tetra-azaporphine embedded in a broad range of poly meric solids and used to investigate the electron-phonon coupling (EPC ) processes in the temperature range between 5 and 30-50 K. Relationsh ips were established between the strength of EPC and the bulk properti es of polymers, such as velocities of transversal and longitudinal ult rasound waves, mechanical moduli, total heat content and polarity.