Compositions of matter useful as pH indicators and related methods
First Claim
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1. A composition comprising a compound including at least five fused molecular rings, the compound able to be protonated or deprotonated as a result of change in pH of a medium to which the compound is exposed.
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Abstract
The present invention provides chemical compounds (compositions of matter) and methods useful for determining pH and/or pH change in an environment. Specific compounds of the invention include at least five fused molecular rings.
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52 Claims
- 1. A composition comprising a compound including at least five fused molecular rings, the compound able to be protonated or deprotonated as a result of change in pH of a medium to which the compound is exposed.
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37. A method comprising:
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providing a chemical compound comprising at least five fused molecular rings;
exposing the molecule to an environment at a pH; and
determining the pH of the environment by determining an interaction of the chemical compound with electromagnetic radiation.
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Specification