Abstract
The effects of nitrogen dioxide on the semiconductivity of crown-ether-substituted phthalocyanines and related aza-crown phthalocyanines in both dry and humid conditions are reported, for films deposited from chloroform solution and doped with different metal salts. Humidity changes the response to NO2 from a p-type conductivity increase to an n-type decrease. Replacing one oxygen atom in each crown ring by N-acetyl blocks the crown cavity and minimises effects of water and added salts. Replacing more oxygens with N-tosyl groups leads to strong steric effects and very poor conductivity in all environments. The effects of doping with other metal salts are also discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 301-305 |
| Number of pages | 5 |
| Journal | Sensors and Actuators B: Chemical |
| Volume | 16 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - Oct 1993 |
| Externally published | Yes |