Organometallic Complexes for Nonlinear Optics, 47-Synthesis and Cubic Optical Nonlinearity of a Stilbenylethynylruthenium Dendrimer

Jeffery CJ; Cifuentes MP; Dalton GT; Corkery TC; Randles MD; Willis AC; Samoc M; Humphrey MG

Macromolecular Rapid Communications, Vol.31, No.9-10, 846-849, 2010

DOI10.1002/marc.200900859 Export Citation

Organometallic Complexes for Nonlinear Optics, 47-Synthesis and Cubic Optical Nonlinearity of a Stilbenylethynylruthenium Dendrimer

Jeffery CJ, Cifuentes MP, Dalton GT, Corkery TC, Randles MD, Willis AC, Samoc M, Humphrey MG

The synthesis of the 1st generation dendrimer 1,3,5-{trans-[Ru(C C-3,5-(trans-[Ru(C CPh)(dppe)(2)(C CC6H4-4-(E)-CH=CH)])(2)C6H3)(dPPe)(2)(C CC6H4-4-(E)-CH=CH)]}(3)C6H3 proceeds by a novel route that features Emmons-Horner-Wadsworth coupling of 1,3,5-C6H3(CH2PO(OEt)(2))(3) with trans-[Ru(C CC6H4-4-CHO)Cl(dppe)(2)] and 1-I-C6H3-3,5-(CH2PO(oEt)(2))(2) with trans-[Ru(C CPh)(C CC6H4-4-CHO)(dppe)(2)] as key steps. The stilbenylethynylruthenium dendrimer is much more soluble than its ethynylated analog 1,3,5-{trans-[Ru(C C-3,5-(trans-[Ru(C CPh) (dppe)(2)(C CC6H4-4-C C)])(2)C6H3)(dppe)(2)(C CC6H4 4-C C)]}(3)C6H3 and, in contrast to the ethynylated analog, is a two-photon absorber at telecommunications wavelengths.