Patent ID: 11953482
Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Field: Measurement (Instruments)
Classification: CPC G  B  C | IPC B  C  G

Claim 0:
1. A method of sensing carbon dioxide substantially independently of humidity, comprising:
exposing a composition to a gas and/or a liquid, wherein:
the composition comprises a molecular structure comprising an electrically conductive backbone, a plurality of heteroatoms, and a plurality of pores,
the composition has a monolayer amount of water greater than or equal to 2 wt % versus a total weight of the composition,
the gas and/or the liquid comprises carbon dioxide in an amount greater than or equal to 400 ppm and less than or equal to 10,000 ppm, and
the gas has a relative humidity greater than or equal to 10% RH and/or the liquid has an equilibrium relative humidity greater than or equal to 10% ERH, wherein:
the composition is configured to exhibit an electrical resistivity dependence on the amount of carbon dioxide in the gas, wherein the electrical resistivity dependence on the amount of carbon dioxide in the gas changes by less than 50% when the relative humidity of the gas is from 10% RH to 80% RH, and/or
the composition is configured to exhibit an electrical resistivity dependence on the amount of carbon dioxide in the liquid, wherein the electrical resistivity dependence on the amount of carbon dioxide in the liquid changes by less than 50% when the equilibrium relative humidity of the liquid is from 10% ERH to 80% ERH.