Abstract
A new hyperbranched polymer was prepared by the one-pot Knoevenagel polycondensation of 4-[N,N-bis(hydroxyethyl)amino−4′ -formyl]-azobenzene (CHO-DOH) with cyanoacetic acid using 4-(dimethylamino)pyridine (DMAP) as a base in tetrahydrofuran (THF). This polymer was soluble in polar aprotic solvents such as N,N-dimethylformamide and dimethyl sulfoxide. The glass transition temperature (T 8 ) of the polymer was observed at 145°C for PE-Azo/Hyper. The second harmonic generation (SHG) measurements of the obtained polymer were carried out by the Maker fringe method after corona poling at 7 kV near T 8 for 10 minutes. The second-order nonlinear optical coefficient, d33 was about 15 pm/V for PE-Azo/Hyper.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
