Synthesis and Thermal Properties of Azobenzene Core Polyester Dendrimers with Trityl Groups at the Periphery

Key Engineering Materials 2018
Lauma Laipniece, Valdis Kampars

We have synthesized polyester type dendrimers containing azobenzene chromophore in the core and trityl groups at the periphery using divergent growth strategy up to 3rd generation. We analyzed dendrimer samples using NMR, HPLC, TG, DSC and UV-Vis techniques. We found that functionalization of dendrimer periphery is not complete. Dendrimers with trityl groups at the periphery have glass transition temperatures in the range of 73-87 ºC.

Keywords
azobenzene, dendrimer, trityl group, glass transition temperature
DOI
10.4028/www.scientific.net/KEM.762.171
Hyperlink
https://www.scientific.net/KEM.762.171

Laipniece, L., Kampars, V. Synthesis and Thermal Properties of Azobenzene Core Polyester Dendrimers with Trityl Groups at the Periphery. In: Key Engineering Materials, Latvia, Rīga, 20-20 October, 2017. -: Trans Tech Publications, 2018, pp.171-175. ISBN 978-3-0357-1238-4. ISSN 1662-9795. Available from: doi:10.4028/www.scientific.net/KEM.762.171

Publication language
English (en)