Diffusional dynamics near the glass transition in amorphous polymer thin films

Denise D. Deppe*, John M Torkelson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


A novel experimental approach involving the fluorescence nonradiative energy transfer technique is employed to study transport processes in thin polymer films near the glass transition through the measurement of energy transfer efficiency, E. Using a layered thin film sample geometry, values of the small molecule diffusion coefficient, D, as low as 8 × 10-16 cm2/sec are measured within diffusion times of 3.5 hours. These studies reveal a significant dependence of both the magnitude and temperature dependence of D on diffusant size.

Original languageEnglish (US)
Pages (from-to)221-226
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
StatePublished - Jan 1 1996

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials


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