Preparation of Ortho Substituted Perylene Bisimides Derivatives and Electron Transport Study
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O625.63

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    Abstract:

    Perylene bisimides derivatives 3 and 4 were synthesized at the 2, 5, 8, 11-positions of the perylene core under Ir-catalysis. The structure of the compounds were characterized by means of 1H NMR,13C NMR and HRMS.Compared to compound 1 a hypsochromic shift in the absorption and emission is observed for the derivatives 3 and 4, the tetrachloro derivative showing a greater shift than the tetrabromo one. Their LUMO values are -4.18 eV and -4.16 eV, which are significant low than compound 1. The thermogravimetric analysis (TGA) indicates that all of them have good thermal stability with decomposition temperatures more than 370℃. Electron mobilities were measured by the method of space charge limited current (SCLC). By introducing the halo atom at the ortho position, their films become ordered and they exhibit good electron mobilities, which is up to 3.05 ?10-4 cm2 V-1 s-1 for compound 3.

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History
  • Received:August 01,2013
  • Revised:August 26,2013
  • Adopted:September 02,2013
  • Online: January 03,2014
  • Published:
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