Highly conductive graphite film prepared from pyrolysis of poly(p-phenylene vinylene)

Uniaxially Aligned Poly(p-phenylene vinylene) and Carbon Nanofiber Yarns through Electrospinning of a Precursor

“…Two peaks at around 1580 and 1360 cm -1 , assigned to G and D bands, respectively, evidently appear in the Raman spectra for the nanofiber yarns thermally treated at temperatures higher than 600 °C, indicating practical transformation of disordered carbon into graphitic structure in the carbonization process. It notes that the carbonization took place without melting process accompanying the third weight loss at 500-600 °C, suggesting that the PPV is intermolecularly condensed to form more compact structures by removal of hydrogen and aromatization (Ohnishi et al, 1986) as shown in Fig. 15, similarly to carbonization of poly(pphenylene) (Fitzer et al, 1971).…”

“…5: The first small weight loss at 25-100 °C is associated with the desorption of moisture, and the second one at 100-250 °C is due to the elimination of tetrahydrothiophene and hydrochloric acid, corresponding to the conversion to PPV (as shown in the inset) . The third weight loss at 500-600 °C continuing gradually up to 1000 °C is due to the carbonation of the PPV that will be discussed later (Ohnishi et al, 1986). The PXTC yarns are subsequently converted to PPV yarns by heat treatment at 250 °C for 12 h in vacuum .…”

Poly(arylene vinylene)s

“…The thermal stability is slightly improved in comparison to neat PPV derivates by the introduction of PMMA blocks. 72,73 The electrical conductivity of PPV that is pyrolyzed at 3000°C is strongly influenced by stretching. CzEH-PPV 41 Dimethoxy-PPV Poly(2,5-dimethoxy-1-4-phenylene vinylene) 42 DMeO-PPV Poly(2,5-dimethoxy-1,4-phenylene vinylene) 43 DMOS-PPV Poly(2-dimethyloctylsilyl-p-phenylene vinylene) 44 DOO-PPV Poly(2,5-dioctyloxy-1,4-phenylene vinylene) 45 a Most recent references b Often investigated, see text At temperatures above 800°C, PPV can be converted into graphite.…”

Poly(phenylenevinylene)s as Sensitizers for Visible Light Induced Cationic Polymerization

“…A slight increase, compared to neat PPV derivatives, is observed in the case of block copolymers of PPV and poly (methylmethacrylate) (PMMA)[85]. PPV can be converted into graphite at temperatures above 800 0 C[86,87]. Pyrolysis at 3000 o C, strongly affects the electrical conductivity of PPV.…”