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Some conducting structures used as chemical sensor elements: 9,9-dihexadecyl-2,7-bis(pyrrole-2-yl)fluorene (1), 9-hexadecyl-2,7-bis(pyrrole-2-yl)fluorene (2), 9,9-didecyl-2,7-bis(2-thiophene)fluorene (3), N-nonyl-4,4′-bis-(thiophene)diphenylamine (4), N-heptyl-3,6-bis(2-thiophene)carbazole (5).
