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Citation: PENG Xiaochun, WU Jianhu, XIAO Zhuping, XIE Bitao, WU Fang, ZHAO Hanshuang. Synthesis of the First Generation π-Conjugate Unsymmetrical Dendrimers with Different Cores[J]. Chinese Journal of Applied Chemistry, ;2013, 30(8): 888-896. doi: 10.3724/SP.J.1095.2013.20466 shu

Synthesis of the First Generation π-Conjugate Unsymmetrical Dendrimers with Different Cores

College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China

Received Date: 18 October 2012
Revised Date: 4 February 2013

4,5-Bis(3',5'-di-tert-butylphenylethynyl)-2-methoxyphenol(dendron) was synthesized from 3,5di-tertbutyl phenol,trifluoromethanesulfonic anhydride and 4,5-diethynyl-2-methoxyphenol. The phenolic hydroxyl group was subsequently esterified by trifluoromethanesulfonic anhydride. By coupling different chromophores(biphenyl,azobenzene,anthracene,pyrene) on the as-obtained sulfonic esters,π-conjugate unsymmetrical dendrimers with different cores were obtained. ¹H NMR,¹³C NMR spectroscopy,FT-IR spectroscopy and element analysis were deployed to characterize the resultant products. The solubility of the dendrimers reveals that,compared to the cores(varieties of chromophores),all dendrimers are soluble in most common organic solvents. Meanwhile,the dendrimers show improved thermostability. These two characters make the dendrimers to be easily blended with other materials or added into equipments.
- unsymmetrical conjugate dendrimer,
- chromophores coupling,
- synthesis,
- characterization
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