Triplet-triplet annihilation in dilute,solid solutions of aromatic polymers

Summary The triplet-triplet annihilation of mass fractionatedPVCA (M=3.6·10³–1.4·10⁶) in toluene glasses was studied by phosphorescence, for glasses ofPVCA andP2VN (order of M=10⁶) inMTHF the intensity of phosphorescence and delayed fluorescence were studied as a function of the excitation intensity. A survey of T-T annihilation in solid solutions of aromatic polymers is given and requirements for a theory explaining low dimensional energy transport and exciton-exciton annihilation are pointed out.Presented at the ACS-Symposium Polymer Photophysics: Fundamentals and Applications. ACS-Spring Meeting 1992, San Francisco, April 5–10, 1992