Palai, Akshaya K. and Mishra, Sarada P. and Kumar, Amit and Srivastava, Ritu and Kamalasanan, Modeeparampil N. and Patri, Manoranjan (2010) Synthesis and Characterization of Red-Emitting Poly(aryleneethynylene)s Based on 2,5-Bis(2-ethylhexyl)-3,6-di(thiophen-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione (DPP). Macromolecular Chemistry and Physics, 211 (9). pp. 1043-1053. ISSN 1022-1352

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Synthesis and characterization of a series of PAEs containing DPP units in the main chain are described. equation image of the polymers was in the range 10 800–111 900. The polymers formed a deep blue solution in chloroform with absorption maxima between 589 and 645 nm and optical band gaps ranging from 1.61 to 1.74 eV. When excited at the absorption maxima, the polymer solutions showed red fluorescence with emission maxima between 656 and 676 nm. The polymers exhibited quasi-reversible oxidation process with HOMO energy levels between −5.60 and −6.17 eV. EL properties of three polymers were investigated with device configuration ITO/PEDOT:PSS/Polymer/LiF/Al. When appropriate bias voltage was applied, a red EL with a maximum brightness of 17.5–24 cd · m−2 could observe from the devices.

Item Type: Article
Additional Information: Copyright for this article belongs to M/s Wiley-VCH Verlag Berlin.
Subjects: Polymer Science
Depositing User: Ms Neetu Chandra
Date Deposited: 17 Jul 2012 09:10
Last Modified: 17 Jul 2012 09:10

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