Synthesis and Characterization of Azobenzene-Containing Polydiacetylene Polymers

Esthela Albarrán Preza; Enrique Vigueras-Santiago; Susana Hernández López

doi:10.4028/www.scientific.net/AMR.976.46

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 976Synthesis and Characterization of...

Synthesis and Characterization of Azobenzene-Containing Polydiacetylene Polymers

Abstract:

Polydiacetylenes are a type of highly conjugated polymers, and highly polar species are obtained when these polymers contain donor-acceptor azobenzene entities. In this paper the synthesis, characterization and evaluation of the dielectric constant of two polydiacetylenes containing azobenzenes as pendant groups are discussed. The Azobenzene chromophores are covalently bonded to the main chain, and their polarity is defined by an electro-donor (amine) and an electro-acceptor group (nitro or chlorine) bonded to the ends of a conjugated azobenzene structure. Both polymers were processed into plates of 1cm diameter x 0.674 mm thickness using a thermo mechanic technique. Their dielectric constants were evaluated respect to the temperature in a range of frequency of 110 MHz-1.32 GHz, from room temperature to close to their respective T_g. The dielectric constant for the polymer containing the nitro group was higher than it for polymer containing the chloride atom at all temperatures. It is discussed in terms of the ability to nitro and chloride to attract electronic density.

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Advanced Materials Research (Volume 976)

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46-51

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https://doi.org/10.4028/www.scientific.net/AMR.976.46

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Online since:

June 2014

Authors:

Esthela Albarrán Preza, Enrique Vigueras-Santiago, Susana Hernández López*

Keywords:

Chromophores, Dielectric Constant, Electro Donor-Aceptor Systems, Polar Polymers

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