| 主权项 |
1. A compound having the following structure: wherein: one of X1 and Y1 is —CH═ or ═CH— and the other is S, O, CH2 or NR1; one of X2 and Y2 is —CH═ or ═CH— and the other is S, O, CH2 or NR1;
R1 is H or a linear or branched aliphatic group of up to 20 carbon atoms; R2 and R3 are each independently where
R4 is R5 is R14 is and
R9, R10, R11, R12, R13, R15, R16, R17, R18 and R19 are each independently H, or a linear, branched or cyclic aliphatic, aryl or heteroaryl group of up to 20 carbon atoms, with the proviso that both of R6 and R7 are not H, both of R9 and R10 are not H, both of R12 and R13 are not H, and both of R15 and R16 are not H; M1, M2, and M3 are each individually S, Se, or Te; L1, L2, and L3 are each individually a coordination ligand bound to M1, M2, and M3, respectively, through a coordination bond, with q being an integer from 0 to 4; Z1, Z2, Z3, Z4, Z5 and Z6 are each independently H, Cl, Br, F, NO2, CN, N(R20)2, OR21, CF3, or C6HzE6-z, or Z1 and Z2 or Z3 and Z4 or Z5 and Z6 are each N and are connected by a metal bridge atom to form, together with the carbon atoms to which they are attached, a 5 member ring system, where
R20 and R21 are each independently a linear, branched or cyclic aliphatic, aryl or heteroaryl group of up to 20 carbon atoms, X is F, Cl or Br, and z is an integer from 0 to 6; and n is an integer from 0 to 5. |
