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  • Title: Efficient synthesis of regioisomerically pure bis(trifluoromethyl)-substituted 3,4,9,10-perylene tetracarboxylic bis(benzimidazole).
    Author: Yuan Z, Xiao Y, Li Z, Qian X.
    Journal: Org Lett; 2009 Jul 02; 11(13):2808-11. PubMed ID: 19552462.
    Abstract:
    By a new strategy, two trifluoromethyl groups were efficiently introduced to highly insoluble n-type semiconductor 3,4,9,10-perylene tetracarboxylic bis(benzimidazole) (PTCBI), and for the first time we obtained three pure regioisomers of bis(trifluoromethyl)-substituted PTCBI, whose optical properties are different from one another.
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