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Synthesis of nanostructures based on 1,4- and 1,3,5-phenylethynyl units with π-extended conjugation. Carbon networks dendrimer base units

✍ Scribed by J.Gonzalo Rodrı́guez; J. Esquivias

Book ID
104253822
Publisher
Elsevier Science
Year
2003
Tongue
French
Weight
220 KB
Volume
44
Category
Article
ISSN
0040-4039

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✦ Synopsis

A convenient and efficient synthesis of 3,5-di(silylethynyl)phenylacetylene and p- [3,5-di(silylethynyl)phenylethynyl]phenylacetylene has been carried out. These compounds serve to prepare nanometer-sized conjugated 1,4-and 1,3,5-phenylethynyl oligomers, by means of cross-coupling with a convenient haloaryl derivative, catalysed by palladium(II), in excellent yields. The phenylethynyl homologues show fluorescence emission, the wavelength of which is displaced by approximately 20 nm by each phenylethynyl unit increasing the conjugate chain.

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Synthesis of carbon dendron nano-chains
Synthesis of carbon dendron nano-chains with π-extended conjugation based on linear 1,4-phenylethynyl and 1,5-naphthylethynyl subunits
✍ J.Gonzalo Rodrı́guez; J.Luis Tejedor; Jorge Esquivias; Cristina Dı́az 📂 Article 📅 2003 🏛 Elsevier Science 🌐 French ⚖ 131 KB

A convenient and efficient synthesis of 3,5-di(trimethylsilylethynyl)phenylacetylene and p- [3,5-di(trimethylsilylethynyl)-1-phenylethynyl]phenylacetylene and the naphthylethynyl homologues terminal acetylenes of 5-(N,N-dimethylamino)naphthylethyne have been carried out. These terminal acetylene com