PURITY-PROPERTY RELATIONSHIPS IN ORGANIC SEMICONDUCTION.
Final rept. 15 Sep 64-14 Sep 67,
MONSANTO RESEARCH CORP EVERETT MASS BOSTON LAB
Pagination or Media Count:
The removal of naturally occurring impurities from oxazole scintillators reduced both the dark and photoconductivity. The addition of charge-transfer acceptors e.g. chloranil reduced the IpId ratio in the host at concentrations as low as 0.00001 mole fraction. Impurities reduced both IpId and solid state fluorescence values. Sodium salicylate and 1,3,4,7-tetraphenylisobenzofuran were also studied. The dark conductivities of the cyanine photosensitizing dyes showed a decrease in activation energy with increasing molecular conjugation. Flash photolysis was investigated as an analytical tool. Triplet state absorption in anthracene was absent when highly purified reagents were used. Author
- Radiation and Nuclear Chemistry
- Atomic and Molecular Physics and Spectroscopy
- Solid State Physics