Silole-core phenylacetylene dendrimers and their application in detecting picric acid

✍ Scribed by Shanshan Li; Taohua Leng; Hanbin Zhong; Chengyun Wang; Yongjia Shen

• Book ID: 102892984
• Publisher: Journal of Heterocyclic Chemistry
• Year: 2011
• Tongue: English
• Weight: 804 KB
• Volume: 49
• Category: Article
• ISSN: 0022-152X
• DOI: 10.1002/jhet.796

✦ Synopsis

Abstract

Silole‐core phenylacetylene dendrimers were designed and synthesized, among them, the model compound (n = 0) and the first generation of the dendrimer (n = 1) were obtained by the reaction of 2,5‐dibromosilole with corresponding terminal alkynes, the second generation of the dendrimers (n = 2) was synthesized from 2,5‐diiodosilole. These compounds indicated the absorptions of both phenylacetylene dendrons (250–350 nm) and silole core (400–500 nm). The first generation displayed efficient energy transfer from phenylacetylene dendrons to silole core, whose energy transfer efficiency was as high as 80%. These compounds were used as chemical sensors to probe explosive, for picric acid (PA), the Stern–Volmer constants of model compound and the first generation are 7120 and 5490__M__^−1^, respectively. J. Heterocyclic Chem., (2012).