Study of Photobleaching Mechanism in Methylene Blue Sensitized Gelatin Using a Single Beam UV-Vis. Fibre Optics Spectrophotometer
In the present study, we have investigated the photobleaching of the methylene blue (MB) doped in Gelatin matrix using uv-visible fibre optic spectrophotometer. Illumination of the sample by uv-visible radiation resulted in a decrease of the absorption peak with the increasing of irradiation time...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English English |
| Published: |
Universiti Putra Malaysia Press
2005
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/3817/1/Pages_from_JST_VOL_13_NO._1-2.pdf http://psasir.upm.edu.my/id/eprint/3817/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Universiti Putra Malaysia |
| Language: | English English |
| Summary: | In the present study, we have investigated the photobleaching of the methylene
blue (MB) doped in Gelatin matrix using uv-visible fibre optic spectrophotometer.
Illumination of the sample by uv-visible radiation resulted in a decrease
of the absorption peak with the increasing of irradiation time. This indicates that
upon irradiation MB dye molecule is photoreduced to its leuco form (colorless)
of MB. The present experimental results indicate a slower photobleaching process
occurring at higher concentration of dye doped in gelatin matrix. This study
shows that the MB doped in gelatin solid matrix opens a new possibility in realtime
holography applications. |
|---|