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Tetranicotinamidephenyl porphyrin(TNAPP) reacts with n-C16H33Br and n-C12H25 Br, respectively to yield the products tetra (N-hexadecyl nicotinamide phenyl) porphyrin bromide (THNAPPBr) and tetra-(N-dodecylnicotinamide phenyl ) porphyrin bromide. Its cobalt complex and zinc complex are also prepared. Those porphyrins and metal porphyrins have good film-forming properties. The gas sensitivity studies show that the six kinds of porphyrins are sensitive to NH3 and has a fine selectivity.
Tetranicotinamide phenyl porphyrin (TNAPP) reacts with n-C16H33Br and n-C12H25 Br, respectively to yield the products tetra (N-hexadecyl nicotinamide phenyl) porphyrin bromide (THNAPPBr) and tetra- (N-dodecylnicotinamide phenyl) Those porphyrins and metal porphyrins have good film-forming properties. The gas sensitivity studies show that the six kinds of porphyrins are sensitive to NH3 and has a fine selectivity.