We synthesized polymetltylmethacrylate (PMMA) cross-linked with a tetraphenylporphin (TPP) derivative with four functional groups. The formation of the cross-linked polymer was confinned by means of the double detection technique of Se1 permeation chromatography. The irreversible broadening, or the
Photochemical hole burning of cationic porphin/saponite intercalation compounds
โ Scribed by Kazuaki Sakoda; Kazuhiko Kominami
- Book ID
- 103031551
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 441 KB
- Volume
- 216
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
Intercalation compounds were synthesized from porphin derivatives with cationic substituents and saponite, which is a polycrystalline layered silicate. The formation of the intercalation compounds was confirmed by X-ray diffractions and elemental analysis. We found that the porphin molecules lay their planar skeleton parallel to the silicate layer. Besides, photochemical holes can be burned at least up to 50 K and the amount of spectral diffusion is smaller in these compounds than in a typical neutral porphin/polymer system.
๐ SIMILAR VOLUMES
The quantum yields of photochemical hole burning (PHB) of three ionic porphins and their deuterated analogues doped in poly (vinylalcohol) and poly (sodium 4-styrenesulfonate) were estimated. The deuterated compounds, whose two hydrogen atoms at the nitrogen sites in the porphin ring were exchanged