A compound having the following structure: where: R1 through R9 are each independently —H, —OH, an alkoxy group, an acyloxy group, an amino group, an amido group, a sulfate group, a sulfonate group, a phosphate group, a phosphonate group, or a silicone group having the following structure: where R10 through R11 are each independently —H or an alkyl group; and n and o are independently integers from 2 to 100, where at least one of R1 through R9 is an alkoxy group, acyloxy group, amino group, amido group, sulfate group, sulfonate group, phosphate group, phosphonate group, or silicone group.