Primary photochemical processes in hexafluorobiacetyl at 313 nm.
Absolute photochemical quantum yields of hexafluorobiacetyl have been obtained at 313 nm. over a range of pressures. These were correlated with absolute phosphorescence and fluorescence quantum yields which had been previously obtained in the same pressure range in order to further elucidate the pr...
| Main Author: | |
|---|---|
| Language: | English |
| Published: |
University of British Columbia
2011
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/2429/34694 |
| id |
ndltd-UBC-oai-circle.library.ubc.ca-2429-34694 |
|---|---|
| record_format |
oai_dc |
| spelling |
ndltd-UBC-oai-circle.library.ubc.ca-2429-346942018-01-05T17:47:36Z Primary photochemical processes in hexafluorobiacetyl at 313 nm. Reid, William John Hexafluorobiacetyl Absolute photochemical quantum yields of hexafluorobiacetyl have been obtained at 313 nm. over a range of pressures. These were correlated with absolute phosphorescence and fluorescence quantum yields which had been previously obtained in the same pressure range in order to further elucidate the primary process. A mechanism is proposed and the results are discussed in relation to it. The rate constants for singlet dissociation, for intersystem crossing from the level reached on excitation, and for triplet dissociation were found to be 0.7 x 10⁸ secˉ¹ , 0.6 x 10⁸ sec ˉ¹ and 1.3 x 10⁷ sec ˉ¹ , respectively. The fluorescence lifetime is estimated to be of the order of 2 nsec. above 40 torr. Science, Faculty of Chemistry, Department of Graduate 2011-05-18T23:36:07Z 2011-05-18T23:36:07Z 1969 Text Thesis/Dissertation http://hdl.handle.net/2429/34694 eng For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. University of British Columbia |
| collection |
NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Hexafluorobiacetyl |
| spellingShingle |
Hexafluorobiacetyl Reid, William John Primary photochemical processes in hexafluorobiacetyl at 313 nm. |
| description |
Absolute photochemical quantum yields of hexafluorobiacetyl have been obtained at 313 nm. over a range of pressures. These were correlated with absolute phosphorescence and fluorescence quantum yields which had been previously obtained in the same pressure range in order to further elucidate the primary process.
A mechanism is proposed and the results are discussed in relation to it. The rate constants for singlet dissociation, for intersystem crossing from the level reached on excitation, and for triplet dissociation were found to be 0.7 x 10⁸ secˉ¹ , 0.6 x 10⁸ sec ˉ¹ and 1.3 x 10⁷ sec ˉ¹ , respectively. The fluorescence lifetime is estimated to be of the order of 2 nsec. above 40 torr. === Science, Faculty of === Chemistry, Department of === Graduate |
| author |
Reid, William John |
| author_facet |
Reid, William John |
| author_sort |
Reid, William John |
| title |
Primary photochemical processes in hexafluorobiacetyl at 313 nm. |
| title_short |
Primary photochemical processes in hexafluorobiacetyl at 313 nm. |
| title_full |
Primary photochemical processes in hexafluorobiacetyl at 313 nm. |
| title_fullStr |
Primary photochemical processes in hexafluorobiacetyl at 313 nm. |
| title_full_unstemmed |
Primary photochemical processes in hexafluorobiacetyl at 313 nm. |
| title_sort |
primary photochemical processes in hexafluorobiacetyl at 313 nm. |
| publisher |
University of British Columbia |
| publishDate |
2011 |
| url |
http://hdl.handle.net/2429/34694 |
| work_keys_str_mv |
AT reidwilliamjohn primaryphotochemicalprocessesinhexafluorobiacetylat313nm |
| _version_ |
1718595277329268736 |