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US 12,181,431 B2Granted
Indigo-based polymers for use in SWCNTs electronics
OwnerChang Guo, Jianying Ouyang +3inventors
InventorsChang Guo, Jianying Ouyang, Zhao Li, Jianfu Ding, Patrick Roland Lucien Malenfant
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Abstract
A compound of Formula (0): where Ar is one or more substituted or unsubstituted aromatic units, R is independently H, F, CN, a C1-C20 linear or branched aliphatic group or a C1-C20 linear or branched aliphatic acyl group, and n is an integer 3 or greater, is useful for sorting and dispersing carbon nanotubes (CNTs) and for producing printed electronic devices (e.g. CO2 sensors, TFTs) in which the CNTs are functionalized with the compound.
Claims10
A carbon dioxide sensor comprising:
- an electrode pair;
- and,
- an electrically conductive sensing material in contact with the electrode pair, the sensing material comprising a film of carbon nanotubes functionalized with a compound of Formula (I):
- where Ar is a 9,9-dialkyl-substituted fluorene, and n is integer in a range of 20-50, the compound of Formula (I) having a number average molecular weight (Mn) in a range of 10,000 to 50,000 Da and interacting with carbon dioxide to change electrical conductance of the carbon nanotubes by an amount that correlates to carbon dioxide concentration.
1 more element
Dependencies are inferred from the claim text.