Polymers 2012, 4(2), 1226-1241; doi:10.3390/polym4021226
Article

Synthesis and Optical Study of a New Oligophenylene

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Received: 16 April 2012; in revised form: 10 May 2012 / Accepted: 14 May 2012 / Published: 31 May 2012
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: A new substituted oligophenylene was prepared by the Knoevenagel condensation of 4-methoxybezaldehyde with a functionalized oligophenylene (OMPA). The latter was obtained by (4-methoxy phenyl) acetonitrile electrochemical oxidation. The resulting modified oligomer was characterized by various spectroscopic techniques: NMR, FTIR and UV. The thermal study showed that the modified material exhibited a lower thermal stability compared with OMPA. Finally, the optical study revealed that in solution, the emission was red-shifted when compared with the non-modified oligomer emission and that the optical gap changed from 3.1 eV to 2.75 eV. In thin layer solid state, photoluminescence was again red-shifted by 120 nm, which is probably due to an interaction between the oligomer chains. In addition, a transient photoluminescence study was undertaken for the synthesized materials. It showed that the lifetimes of the photo-generated species were shortened by the conjugation extension in the modified oligomer and by the inter-chain interactions in the solid state.
Keywords: conjugated polymers; oligophenylenes; photoluminescence
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MDPI and ACS Style

Amor, S.B.; Said, A.H.; Chemek, M.; Massuyeau, F.; Wéry, J.; Faulques, E.; Alimi, K.; Roudesli, S. Synthesis and Optical Study of a New Oligophenylene. Polymers 2012, 4, 1226-1241.

AMA Style

Amor SB, Said AH, Chemek M, Massuyeau F, Wéry J, Faulques E, Alimi K, Roudesli S. Synthesis and Optical Study of a New Oligophenylene. Polymers. 2012; 4(2):1226-1241.

Chicago/Turabian Style

Amor, Sarra Ben; Said, Ayoub Haj; Chemek, Mourad; Massuyeau, Florian; Wéry, Jany; Faulques, Eric; Alimi, Kamel; Roudesli, Sadok. 2012. "Synthesis and Optical Study of a New Oligophenylene." Polymers 4, no. 2: 1226-1241.

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