TY - PAT
T1 - Gas detection and analysis process|is polymerised from a 1-substd., 3-substd. or 1,3-substd. indole monomer, and display high sensitivity towards a number of important gas species
A2 - Persaud, Krishna
N1 - Times Cited: 0Issuing organisation: Aromascan Plc
PY - 1996
Y1 - 1996
N2 - A semiconducting organic polymer is polymerised from a 1-substd. 3-substd. or 1,3-substd. indole monomer.Also claimed is a gas sensor comprising a pair of electrodes and semiconducting organic polymers where at least one is the semiconducting organic polymer deposited between the electrodes in such a manner as to effect a semiconducting electrical connection between the electrodes, a means for applying electric signal across the electrodes, and a detection means for detecting a chosen electrical property in the presence of a gas.The substituent in the 3 position is an alkyl gp., an acetyl or an aromatic gp..The substituent at the 1 position is an alkyl gp. or contains an aromatic gp. which is benzyl or tosyl.The alkyl or acetyl substituent(s) possess at least 6C.The polymer is polymerised electrochemically from a soln. contg. the monomer and a counter-ion.The counter-ion is selected from BF4-, PF6 - , ClO4 - , C8 H17 SO3 - , (Fe(CN)6 )3- or CH3 C6 H4 SO3 -.The polymer is selected from, 1-octyl-indole, 1-benzylindole, 1-tosyl-indole, 3-hexanoxyl-1-tosyl-indole, 3-hexanoyl-indole, 3-hexyl-indole, 3-dodecanoyl-1-tosyl-indole, 3-dodecanoyl-indole and 3-dodecyl-indole.USE - It is claimed that the semiconducting polymer is used in a gas sensor.ADVANTAGE - The polymers display high sensitivity towards a number of important species.
AB - A semiconducting organic polymer is polymerised from a 1-substd. 3-substd. or 1,3-substd. indole monomer.Also claimed is a gas sensor comprising a pair of electrodes and semiconducting organic polymers where at least one is the semiconducting organic polymer deposited between the electrodes in such a manner as to effect a semiconducting electrical connection between the electrodes, a means for applying electric signal across the electrodes, and a detection means for detecting a chosen electrical property in the presence of a gas.The substituent in the 3 position is an alkyl gp., an acetyl or an aromatic gp..The substituent at the 1 position is an alkyl gp. or contains an aromatic gp. which is benzyl or tosyl.The alkyl or acetyl substituent(s) possess at least 6C.The polymer is polymerised electrochemically from a soln. contg. the monomer and a counter-ion.The counter-ion is selected from BF4-, PF6 - , ClO4 - , C8 H17 SO3 - , (Fe(CN)6 )3- or CH3 C6 H4 SO3 -.The polymer is selected from, 1-octyl-indole, 1-benzylindole, 1-tosyl-indole, 3-hexanoxyl-1-tosyl-indole, 3-hexanoyl-indole, 3-hexyl-indole, 3-dodecanoyl-1-tosyl-indole, 3-dodecanoyl-indole and 3-dodecyl-indole.USE - It is claimed that the semiconducting polymer is used in a gas sensor.ADVANTAGE - The polymers display high sensitivity towards a number of important species.
M3 - Patent
M1 - WO9618888-A; EP797769-A; WO9618888-A1; AU9539890-A; EP797769-A1; JP10509746-W; US6033601-A
ER -