F. Armand et al., Tetraamidometallo-phthalocyanines Langmuir-Blodgett films: Morphology versus central metal effects on NO2 detection, SYNTH METAL, 102(1-3), 1999, pp. 1476-1477
Symmetrically substituted tetraamidometallo-phthalocyanines (MPc) have been
deposited as Langmuir-Blodgett (LB) films onto glass substrates bearing go
ld interdigitated electrode patterns. CoPc, CuPc, NiPc, and ZnPc LB films w
ere shown to possess a very high sensitivity (Delta R/R greater than or equ
al to 50% at room temperature) when exposed to ppm levels of:nitrogen dioxi
de (NO2). Moreover; it has been demonstrated that the gas-sensing propertie
s of the MPc LB films depend primarily on the nature of the central metal,
and secondarily on the orientation of the macrocycle within the LB film.