Effects of Density on the Intramolecular Hydrogen Bonding,Tail-Tail Cyclization,and Mean-Free Tail-to-Tail Distances of Pyrene End-Labeled Poly(dimethylsiloxane)Oligomers Dissolved in Supercritical CO_2

摘要

We report on the steady-state and time-resolved fluorescence from poly(dimethylsiloxane)oligomers that have been end-labeled with pyrene (Py-PDMS-Py) when it is dissolved in supercritical CO_2 between a reduced density _(#rho#pr=#rho#pexperiment/#rho#critical))of 0.7 and 2.3.