The time-resolved photophysical behaviour of a,a-dinaphthylpropane (~c?-DNP) in iso-octane solution at temperatures greater than 30°C is in good agreement with the predictions of Birks kinetics. At temperatures below 30°C the fluorescence decay behaviour is more complex. This has serious implications for the attempted use of ~-DNP (or indeed any other bichromophoric compound) in attempts to probe macromolecular dynamics if'forced fits' to dual-exponential functions were to be employed. The complexity of the fluorescence decay behaviour of such a simple model molecule (in which the complication of'tacticity' and/or energy migration effects are obviated) has implications regarding the interpretation of the photphyiscal behaviour of macromolecules derived from vinyl aromatic monomers.
Посилання на статтю:
a,a-Dinaphthylpropane: a model for polymer photophysics and a probe for the investigation of macromolecular dynamics? / Tom Annable and lan Soutar // Polymer. – 1993. – Vol 34. – P. 3576-3581.