We describe studies of a polymeric transition metal based polymer that show direct evidence for distinct dynamics of the chain end and inner chain sites. As the polymer becomes concentrated and ultimately cast into a film, the overall dynamical fluctuations slow, but under all circumstances the chain ends exhibit slower spectral dynamics than do the interior sites. We compare our findings with a highly simplistic Rouse like model and find qualitative support for our interpretation.

Dynamics of polymers in solution and in thin films studied with ultrafast 2D-IR spectroscopy

248th National Meeting (2014)

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