Phenothiazine based crosslinked polymer and methods thereof

A crosslinked polymer, comprising reacted units of:

• a phenothiazine monomer of formula (I)
• or a salt thereof, a solvate thereof, a tautomer thereof a stereoisomer thereof, or a mixture thereof;
• a pyrrole monomer of formula (II)
• or a salt thereof, a solvate thereof, a tautomer thereof a stereoisomer thereof, or a mixture thereof;
• and
• an aldehyde of formula (III)
• or a salt thereof, a solvate thereof, a stereoisomer thereof, or a mixture thereof,
• wherein:
• R1, R2, R3, R4, R5, and R6 are independently selected from the group consisting of a hydrogen, an optionally substituted alkyl, an optionally substituted cycloalkyl, an optionally substituted arylalkyl, an optionally substituted aryl, an optionally substituted alkoxy, and an optionally substituted alkylthio;
• R7 is selected from the group consisting of a hydrogen, an optionally substituted alkyl, an optionally substituted cycloalkyl, and an optionally substituted arylalkyl;
• R8 is selected from the group consisting of a hydrogen, an optionally substituted alkyl, an optionally substituted cycloalkyl, an optionally substituted arylalkyl, and an optionally substituted aryl;
• and
• R9 is selected from the group consisting of a hydrogen, an optionally substituted alkyl, an optionally substituted cycloalkyl, an optionally substituted arylalkyl, and an optionally substituted aryl.