Preparation, characterization and gas sensing properties of lead tetra-(tert-butyl)-5,10,15,20-tetraazaporphyrin spin-coating films

A Functionalized Tetrakis(4-Nitrophenyl)Porphyrin Film Optical Waveguide Sensor for Detection of H2S and Ethanediamine Gases

“…However, the absorption bands of ν N-H at 3416 cm –1 and in the macrocycle at 1145–1107 cm –1 ν C = C (or ν C= N ) are visibly different in the spin-coated film. This indicates that the molecules in the film are arrayed more closely [ 54 ].…”

Understanding the gas adsorption kinetics of Langmuir-Schaefer porphyrin films using two comparative sensing systems

“…In this work, a free base porphyrin, 5,10,15,20-tetrakis[3,4-bis(2-ethylhexyloxy)phenyl]-21H,23H-porphine (EHO) was selected as the sensor material because this porphyrin has proven sensitivity to many analytes including alcohols [8], NH 3 [9], acids [10,11], amines [12]. Initially the Langmuir-Schaefer (LS) thin film preparation technique was used to produce EHO films on solid substrates with differing numbers of solid state porphyrin layers.…”

Lead phthalocyanine modified carbon nanotubes with enhanced NH3 sensing performance

“…Among the metal substituted Pc, PbPc is the most interesting one and has been intensively studied [22][23][24] because of its superior properties than other metal substituted Pcs in terms of high sensitivity, reproducibility, and fast response and recovery times in the detection of gases. The gas sensing characteristics of the PbPc and lead porphyrin complexes have also been investigated in our laboratory and show excellent gas sensitivity [25,26]. Pcs have been widely studied for functionalization of CNTs on the basis of -interactions between them.…”