Abstract
We have determined the optical constants of poly(quinoxaline-5,8-diyl) and five of its 2,3-disubstituted derivatives using the pseudo-Brewster angle technique at six wavelengths (457.9, 488.0, 514.5, 632.8, 800.0 and 1064 nm). The refractive indices are fitted to Sellmeier's dispersion formula to estimate the wavelength dispersions of the refractive index in these polymers. The differences in the refractive indices of the six polymers were interpreted based on linear polarizability and free volume. The free volume of the repeating unit for each polymer estimated using Lorentz-Lorenz's relation is consistent with the size of the side chain. These polyquinoxalines with low refractive indices are promising for use as electroluminescent materials.
Sign-in/Register to access full text options 
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 callDisclaimer: 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.
