主权项 |
1. A compound conforming to the structure of Formula (I) below wherein R1 is selected from the group consisting of hydrogen and —OR9; R9 is selected from the group consisting of hydrogen, alkyl groups, and substituted alkyl groups; R2, R3, R4, R5, R6, R7, and R8 are independently selected from the group consisting of alkyl groups, substituted alkyl groups, cycloalkyl groups, substituted cycloalkyl groups, alkenyl groups, substituted alkenyl groups, cycloalkenyl groups, substituted cycloalkenyl groups, heterocyclyl groups, substituted heterocyclyl groups, aryl groups, substituted aryl groups, heteroaryl groups, substituted heteroaryl groups, and siloxy groups, provided at least one of R7 and R8 is different from each of R2, R3, R4, R5, and R6. |