Divergent Synthesis of Polyester Type Dendrimers Containing Azobenzene in the Core
2008
Lauma Laipniece, Jana Kreicberga, Valdis Kampars

Polyester type dendrimers have been synthesized up to third generation using 4-[N,N-bis(2-hydroxyethyl)amino]-3-methoxy-4’-nitroazobenzene as core molecule and 3,5-bis[2-(tetrahydro-2H-pyran-2-yloxy)ethoxy]benzoic acid as branching unit. Growth of dendrimer was ensured by dicyclohexylcarbodiimide under catalysis of 4-N,N-dimethylaminopyridine in dry CH2Cl2, followed by deprotection of THP groups in EtOH/CH2Cl2 solution with HCl. Both steps give good yields decreasing with number of generation because of greater possibility of incomplete reactions with the growth of number of terminal groups.


Keywords
dendrimer, azobenzene, ester, divergent synthesis

Laipniece, L., Kreicberga, J., Kampars, V. Divergent Synthesis of Polyester Type Dendrimers Containing Azobenzene in the Core. Materials Sciences and Applied Chemistry / Materiālzinātne un lietišķā ķīmija . Vol.16, 2008, pp.88-98. ISSN 1407-7353.

Publication language
Latvian (lv)
The Scientific Library of the Riga Technical University.
E-mail: uzzinas@rtu.lv; Phone: +371 28399196