New insight into the synthesis of a novel azo-based optically active polyamidoamine side chain dendritic polyester architectural photoswitch.
[reaction: see text] A novel chiral polyamidoamine side chain dendritic polyester 4 has been synthesized and found to be a photoresponsive system undergoing reversible E/Z photochemical/thermal isomerization of azo units. Thorough characterization (IR,UV-vis, NMR, FAB-MS, elemental analysis, optical rotation, etc.) were performed to ascertain the structures of dendrimers 2, 3, and 4. The intrinsic viscosity of 4 at 36 degrees C in CHCl(3) was found to be 0.48 dl/g.
Ghosh
Samaresh
S
Materials Science Centre, Indian Institute of Technology, Kharagpur, 721302, India.
Banthia
Ajit K
AK
Maiya
Bhaskar G
BG