Synthesis 2006(6): 1009-1015  
DOI: 10.1055/s-2006-926348
PAPER
© Georg Thieme Verlag Stuttgart · New York

Push-Pull-Substituted Oligo(2,5-thienyleneethynylene)s

Bastian Mühling, Sonja Theisinger, Herbert Meier*
Institute of Organic Chemistry, University of Mainz, Duesbergweg 10-14, 55099 Mainz, Germany
Fax: +49(6131)3925396; e-Mail: hmeier@mail.uni-mainz.de;
Further Information

Publication History

Received 2 August 2005
Publication Date:
27 February 2006 (online)

Abstract

Oligo(2,5-thienyleneethynylene)s (OTE) with terminal donor-acceptor substitution were synthesized by applying Sonogashira-Hagihara reactions and a protection group technique. The combination of the alkylthio and nitro substituents provides a DAOTE series, whose long-wavelength absorption shows a monotonous bathochromic effect for increasing numbers n of repeat units. The convergence limit is already reached for n = 3.