Precise detection of local relaxation of amorphous polymers at low temperatures <i>via</i> O<sub>2</sub> diffusion probed by a dual-luminescent imide compound
Local relaxation (LR) of six types of amorphous polymers was precisely monitored at low temperatures (<160 K) using the intensity ratio of phosphorescence (PH) to fluorescence of a dual-luminescent imide compound as a probe for oxygen (O<sub>2</sub>) diffusion. The PH of the imide compound dispersed in the polymer matrices was quenched by O<sub>2</sub>, and the temperature-dependent variation of the PH intensity indicates that the γ-relaxation of the polymer matrix plays a crucial role in O<sub>2</sub> diffusion. This method offers a novel analytical tool for detecting LR phenomena in amorphous polymers at low temperatures.
Authors
- Masatoshi Tokita (ORCID: https://orcid.org/0000-0002-4534-7337)
- Marina Doi (ORCID: https://orcid.org/0000-0002-8826-6174)
- Shinji Ando (ORCID: https://orcid.org/0000-0002-3508-035X)
- Haonan Liu (ORCID: https://orcid.org/0000-0001-8989-7173)
- R. Watanabe
Publication Details
- Journal
- Soft Matter
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5sm00394f
- Primary Topic
- Lanthanide and Transition Metal Complexes
- Type
- article
- Field-Weighted Citation Impact
- 0.00