Synthesis and properties of carborane-appended C(3)-symmetrical extended pi systems.

来自 ACS

阅读量：

作者：

BP Dash，R Satapathy，ER Gaillard，JA Maguire，NS Hosmane

展开

摘要：

A series of C(3)-symmetric pi-conjugated compounds containing three to six o-carborane clusters have been synthesized by employing palladium-catalyzed Suzuki coupling reactions and palladium-catalyzed acetylation reactions, followed by silicon tetrachloride mediated trimerization reactions. Carborane-containing extended trimers were found to emit blue light. Incorporation of o-carborane clusters into extended pi-conjugated systems led to 22-70% enhancement of their relative fluorescence quantum yields. Decapitation of o-carborane clusters made these extended trimers water soluble, and their aqueous solutions were also found to be fluorescent, but with a reduced fluorescence intensity. The carborane-appended pi-conjugated compounds are found to be extremely thermally stable, and for some of these compounds only 10% mass loss occurred at temperatures close to 500 degrees C. The DSC thermograms of smaller C(cage)-appended trimers indicate the occurrence of solid-solid phase transitions.

展开

关键词：

bovine herpesvírus-1 bovine rhinotracheitis aujeszky's disease pseudorabies vírus vaccines

DOI：

10.1021/ja101845m

被引量：

168

年份：

2010