Fluorinated poly(p-phenylenevinylene) copolymers: Preparation and use in light-emitting diodes
- Hebrew Univ., Jerusalem (Israel); and others
A Fluorinated poly(p-phenylenevinylene) analogue, co(TFPV-PV), has been prepared by copolymerization of fluorinated and nonfluorinated bissulfonium salt monomers. Conversion and yield decreased as a function of fluorine substitution. The UV-vis absorption was strongly shifted to the blue with increasing fluorine content. Complementary shifts in photoluminescence spectra were not observed, presumably because the fluorinated segments of the copolymer are very weakly luminescent relative to nonfluorinated segments. The photoluminescence spectra are therefore are similiar to those found for poly (p-phenylenevinylene) in the past. The co(TFPV-PV) compounds showed electroluminescence at an ac potential of {approx}10 V (rms, 600 Hz) between ITO and Al electrodes. Maxima were shifted slightly to the blue with an increase in fluorine. 13 refs., 4 fig.s
- OSTI ID:
- 369904
- Journal Information:
- Chemistry of Materials, Journal Name: Chemistry of Materials Journal Issue: 2 Vol. 8; ISSN CMATEX; ISSN 0897-4756
- Country of Publication:
- United States
- Language:
- English
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