Mishra, Sarada P. and Palai, Akshaya K. and Kumar, Amit and Srivastava, Ritu and Modeeparampil, N. Kamalasanan and Patri, Manoranjan (2010) Highly Air-Stable Thieno[3,2-b]thiophene-Thiophene-Thiazolo[5,4-d]thiazole-Based Polymers for Light-Emitting Diodes. Macromolecular Chemistry and Physics, 211 (17). pp. 1890-1899. ISSN 1022-1352

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Abstract

A series of highly air-stable, low-bandgap poly(3-alkylthiophene)s containing electron-rich thieno[3,2-b]thiophene and electron-deficient thiazolo[5,4-d]thiazole rings were synthesized by the Stille coupling reaction. The polymers exhibited good thermal stability and solubility with excellent film forming properties when drop- or spin-cast from solution. A strong absorption at 564–568 nm and a shoulder at 614–616 nm were observed. The optical bandgap of the polymers was found to be 1.82–1.85 eV. The IP of the polymers was found to be 5.62–5.65 eV. All polymers showed strong fluorescent emission both in solution and in the solid state. EL devices were fabricated using the polymers as an emissive layer and red emission was observed with the emission range of 649–679 nm.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Uncontrolled Keywords:	electrochemistry; light-emitting diodes (LED); luminescence; polymerization (general); synthesis
Subjects:	Polymer Science
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	03 May 2012 07:07
Last Modified:	03 May 2012 07:07
URI:	http://npl.csircentral.net/id/eprint/186

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