Optical loss in rod-like polymer thin films
| Autor: | S. Caracci, J.W. Lee, Chyi-Shan Wang, D.M. Husband |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
chemistry.chemical_classification
Polymers and Plastics business.industry Chemistry Organic Chemistry Analytical chemistry Polymer Waveguide (optics) Wavelength Optics Polycyclic compound Attenuation coefficient Materials Chemistry Thin film business Absorption (electromagnetic radiation) Visible spectrum |
| Zdroj: | Polymer. 39:2765-2768 |
| ISSN: | 0032-3861 |
| DOI: | 10.1016/s0032-3861(97)00532-6 |
| Popis: | Optical thin films of three rod-like polymers, a rigid-rod polymer poly(p-phenylene benzobisthiazole) (PBZT), a diadamantane-substituted PBZT (DMT-PBZT) and a bicyclo[2.2.2]octane-substituted PBZT (BCO-PBZT), at different thicknesses were prepared with the solid-state coagulation process. In contrast to PBZT, DMT-PBZT and BCO-PBZT do not have a π-conjugated backbone because of their aliphatic DMT and BCO moieties. The PBZT thin films showed an out-of-plane optical attenuation coefficient ( α o ) of 1300 dB cm −1 at 600 nm wavelength while the α o value of the DMT-PBZT and the BCO-PBZT thin films at 600 nm wavelength could not be determined due to their weak absorption in the visible light region. However, the in-plane optical attenuation coefficient ( α i ) of the BCO-PBZT thin films was determined to be about 11.4 dB cm −1 by waveguide measurement at 632 nm. By comparing the optical transmission of the PBZT thin films to that of the DMT-PBZT and the BCO-PBZT thin films, it is concluded that the optical loss in the PBZT thin films is mainly due to intrinsic absorption of the polymer. |
| Databáze: | OpenAIRE |
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