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

✍ Scribed by Christopher J. Jeffery; Marie P. Cifuentes; Gulliver T. Dalton; T. Christopher Corkery; Michael D. Randles; Anthony C. Willis; Marek Samoc; Mark G. Humphrey

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 460 KB
• Volume: 31
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.200900859

✦ Synopsis

Abstract

The synthesis of the 1st generation dendrimer 1,3,5‐{trans‐[Ru(C≡C‐3,5‐(trans‐[Ru(C≡CPh)(dppe)~2~(C≡CC~6~H~4~‐4‐(E)‐CHCH)])~2~C~6~H~3~)(dppe)~2~(C≡CC~6~H~4~‐4‐(E)‐CHCH)]}~3~C~6~H~3~ proceeds by a novel route that features Emmons‐Horner‐Wadsworth coupling of 1,3,5‐C~6~H~3~(CH~2~PO(OEt)~2~)~3~ with trans‐[Ru(C≡CC~6~H~4~‐4‐CHO)Cl(dppe)~2~] and 1‐I‐C~6~H~3~‐3,5‐(CH~2~PO(OEt)~2~)~2~ with trans‐[Ru(C≡CPh)(C≡CC~6~H~4~‐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≡CC~6~H~4~‐4‐C≡C)])~2~C~6~H~3~)(dppe)~2~(C≡CC~6~H~4~‐4‐C≡C)]}~3~C~6~H~3~ and, in contrast to the ethynylated analog, is a two‐photon absorber at telecommunications wavelengths.

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