Silole‐core phenylacetylene dendrimers and their application in detecting picric acid |
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| Authors: | Shanshan Li Taohua Leng Hanbin Zhong Chengyun Wang Yongjia Shen |
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| Institution: | 1. Key Laboratory for Advanced Materials and Institute of fine chemicals, East China University of Science and Technology, Shanghai 200237, People's Republic of China;2. National Food Quality Supervision and Inspection Center (Shanghai)/Shanghai Institute of Quality Inspection and Technical Research, Shanghai 200233, People's Republic of China |
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| 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 5490M?1, respectively. J. Heterocyclic Chem., (2012). |
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