Jump to main content
Jump to site search

Issue 17, 2013
Previous Article Next Article

Photocrosslinkable liquid prepolymers for flexible waveguide display applications

Author affiliations

Abstract

We have prepared and evaluated two liquid prepolymers and their UV-cured films for flexible display applications. 2,3,5,6,2′,3′,5′,6′-Octafluoro-4,4′-bis-[2-(2-{2-[2-(2,3,5,6-tetrafluoro-4-vinyl-phenoxy)-ethoxy]-ethoxy}-ethoxy)-ethoxy]-biphenyl (7) and 2,3,5,6,2′,3′,5′,6′-octafluoro-4,4′-bis-[2-(2-{2-[1,1-difluoro-2-(2,3,5,6-tetrafluoro-4-vinyl-phenoxy)-ethoxy]-1,1,2,2-tetrafluoro-ethoxy}-1,1,2,2-tetrafluoro-ethoxy)-2,2-difluoro-ethoxy]-biphenyl (8) are synthesized with decafluorobiphenyl, 2,3,4,5,6-pentafluorostyrene, and tetraethylene glycol or fluorinated tetraethylene glycol. The UV-cured films prepared from these prepolymers show mechanical flexibility and optical transparency. The refractive indices and optical losses of the films prepared from prepolymers 7 and 8 are around 1.51 and 1.43, and 1.03 and 1.06 dB cm−1 at a wavelength of 633 nm. The films are thermostable at high temperature over 350 °C. The ultimate stress, initial modulus, and elongation of the films prepared from prepolymers 7 and 8 are 15.5 MPa, 0.42 GPa, and 12.2%, and 13.8 MPa, 0.49 GPa, and 6.8%, respectively. Finally, we have demonstrated a flexible waveguide display film fabricated from our prepolymers and identified the liquid prepolymers as possible good candidate materials for flexible display applications.

Graphical abstract: Photocrosslinkable liquid prepolymers for flexible waveguide display applications

Back to tab navigation

Supplementary files

Article information


Submitted
23 Nov 2012
Accepted
04 Mar 2013
First published
11 Mar 2013

J. Mater. Chem. C, 2013,1, 2983-2989
Article type
Paper

Photocrosslinkable liquid prepolymers for flexible waveguide display applications

S. K. Park, J. J. Ju, J. T. Kim, M. Kim, J. Moon, J. Lee, H. Y. Chu, D. W. Kim, K. Kyung and S. Park, J. Mater. Chem. C, 2013, 1, 2983
DOI: 10.1039/C3TC00704A

Social activity

Search articles by author

Spotlight

Advertisements