Fabrication of gas sensors based on soluble phthalocyanines

✍ Scribed by Teruhisha Kudo; Mutsumi Kimura; Kenji Hanabusa; Hirofusa Shirai; Takehiko Sakaguchi

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 61 KB
• Volume: 03
• Category: Article
• ISSN: 1088-4246
• DOI: 10.1002/(sici)1099-1409(199901)3:1<65::aid-jpp105>3.0.co;2-z

✦ Synopsis

Gas sensors based on 2,9,16,23-tetra(2,6-dimethylphenoxy)metallophthalocyanine (TDMP- MPc ) films on interlocking silver electrodes were fabricated by solvent casting from chloroform solutions containing 2,9,16,23-tetra(2,6-dimethylphenoxy)copper, cobalt or nickel phthalocyanine ( TDMP - CuPc , TDMP - CoPc or TDMP - NiPc ). The sensitivity of the gas sensors to the presence of NO ~2~ and the depletion of O ~2~ was investigated. It was confirmed that the gas sensors based on TDMP - CuPc and TDMP - CoPc films could detect 1 ppm NO ~2~ at room temperature and that the current responses to the presence of NO ~2~ and the depletion of O ~2~ were considerably quick. These results indicate that adsorption and desorption of NO ~2~ and O ~2~ on the surfaces of TDMP - MPc films are easily achieved at room temperature.