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Title: Synthesis and characterization of a new p-n diblock light-emitting copolymer
Authors: Yu, W.-L. 
Meng, H.
Pei, J. 
Huang, W. 
Li, Y.
Heeger, A.J.
Issue Date: 28-Jul-1998
Citation: Yu, W.-L.,Meng, H.,Pei, J.,Huang, W.,Li, Y.,Heeger, A.J. (1998-07-28). Synthesis and characterization of a new p-n diblock light-emitting copolymer. Macromolecules 31 (15) : 4838-4844. ScholarBank@NUS Repository.
Abstract: In this paper we present the synthesis and characterization of a new light-emitting copolymer constituted of regularly alternating segments of 3,3′-didecyl-2,2′-bithiophene and 2,6-bis(1,3,4-oxadiazolyl)-toluene, which are p-dopable and n-dopable, respectively. The new polymer emits intense green light under the irradiation of UV light in its film states and shows strong solvatochromism both on absorption and on emission. The n-doping potential of the polymer is measured to be similar with that of 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (PBD) and other reported oxadiazole-containing polymers, the currently excellent electron-transporting materials, while its p-doping potential is much lower than those of other oxadiazole-containing light-emitting polymers and is comparable with that of poly-(p-phenylenevinylene) (PPV) and polythiophenes (PT), the typical p-dope type materials. The presented synthesis reveals a possible approach to balance the rates of injection of electrons and holes from opposite contacts into an emissive layer in polymer light-emitting diodes by controlling the intrinsic properties of light-emitting materials.
Source Title: Macromolecules
ISSN: 00249297
Appears in Collections:Staff Publications

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