Abstract
The photoinduced absorption and bleaching of trans-polyacetylene were investigated in nanosecond time regime for the first time. The transient absorption near the band gap and the bleaching of the interband transition were observed for both trans-(CH)x and trans-(CD)x. The absorption near the band gap saturates at ΔA/AO ∼ 0.01. The decay curves of transient absorbance change can be fitted to erf[(t/τ)- 1 2]. The time constants are 144±15 ns ((CH)x) and 305±27 ns ((CD)x) at 4 K and 32±6 ns ((CH)x) and 40±6 ns ((CD)x) at 290 K. When the trans content in cis-rich film decreases, the time constant becomes longer. The decay kinetics was interpreted by the interchain recombination of photoexcited polaron pairs.
| Original language | English |
|---|---|
| Pages (from-to) | 367-372 |
| Number of pages | 6 |
| Journal | Synthetic Metals |
| Volume | 17 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - 1987 Jan |
| Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry
Fingerprint Dive into the research topics of 'Nanosecond time-resolved photoinduced absorption of trans-polyacetylene'. Together they form a unique fingerprint.
Cite this
Kobayashi, T., Yoshizawa, M., Fujimoto, H., & Tanaka, J. (1987). Nanosecond time-resolved photoinduced absorption of trans-polyacetylene. Synthetic Metals, 17(1-3), 367-372. https://doi.org/10.1016/0379-6779(87)90766-1