主权项 |
1. A compound having a structure wherein R1 is R2 is H, CH3, CCl3, CBr3, CF3, OH, NH, or R3 and R4 are each independently H, Cl, Br, I, F, CH3, CCl3, CBr3, CF3, a C1-C6 alkyl substituted with one or more Cl, Br, OH, or F, NO2, CH3OH, CH3CH2OH, OCH3, OCH2CH3, CO2, NH2, N(CH3)2, N(CCl3)2, N(CBr3)2, or N(CF3)2; R5 is H, OH, OCH3, or OCH2CH3; n is 0, 1, 2, 3, 4, or 5; m is 0, 1, 2, 3, 4, or 5; and X1, X2, X3, X4, X5, X6, X7, X8, X9, and X10 are each independently CH, N, O or S. |