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Polyvinylcarbazole

Another interesting applications area for fullerenes is based on materials that can be fabricated using fullerene-doped polymers. Polyvinylcarbazole (PVK) and other selected polymers, such as poly(paraphcnylene-vinylene) (PPV) and phenylmethylpolysilane (PMPS), doped with a mixture of Cgo and C70 have been reported to exhibit exceptionally good photoconductive properties [206, 207, 208] which may lead to the development of future polymeric photoconductive materials. Small concentrations of fullerenes (e.g., by weight) lead to charge transfer of the photo-excited electrons in the polymer to the fullerenes, thereby promoting the conduction of mobile holes in the polymer [209]. Fullerene-doped polymers also have significant potential for use in applications, such as photo-diodes, photo-voltaic devices and as photo-refractive materials. [Pg.85]

Poly(ethylene terephtlhalate) Phenol-formaldehyde Polyimide Polyisobutylene Poly(methyl methacrylate), acrylic Poly-4-methylpentene-1 Polyoxymethylene polyformaldehyde, acetal Polypropylene Polyphenylene ether Polyphenylene oxide Poly(phenylene sulphide) Poly(phenylene sulphone) Polystyrene Polysulfone Polytetrafluoroethylene Polyurethane Poly(vinyl acetate) Poly(vinyl alcohol) Poly(vinyl butyral) Poly(vinyl chloride) Poly(vinylidene chloride) Poly(vinylidene fluoride) Poly(vinyl formal) Polyvinylcarbazole Styrene Acrylonitrile Styrene butadiene rubber Styrene-butadiene-styrene Urea-formaldehyde Unsaturated polyester... [Pg.434]

Besides its temperature dependence, hopping transport is also characterized by an electric field-dependent mobility. This dependence becomes measurable at high field (namely, for a field in excess of ca. 10d V/cm). Such a behavior was first reported in 1970 in polyvinylcarbazole (PVK) [48. The phenomenon was explained through a Poole-ITenkel mechanism [49], in which the Coulomb potential near a charged localized level is modified by the applied field in such a way that the tunnel transfer rale between sites increases. The general dependence of the mobility is then given by Eq. (14.69)... [Pg.568]

R.H. Partridge, Electroluminescence from polyvinylcarbazole films (parts 1-4), Polymer, 24 733— 762, 1983. [Pg.259]

PolyCvinyl butyrate), 10 492-493 Polyvinylcarbazole (PVK), 22 207t PolyCvinyl carbonates), 25 601 PolyCvinyl chloride) (PVC), 23 407 24 170 25 657-691. See also PVC entries Vinyl chloride polymers antioxidant applications, 3 123 asbestos substitute, 3 315 cadmium stabilizers with, 4 501 coatings, 7 39... [Pg.747]

Interestingly, our own studies have revealed that both the shape of the macromolecule and the glass transition temperature, Tg, change with irradiation time. For example, the irradiation of a bimodal commercial sample of polyvinylcarbazole (PNVK) (Fig. 5.31a) in dichloromethane occurred with an initial increase in (the number average) molar mass (M ) and an apparent loss in the bimodal nature of the polymer (Tab. 5.16, Fig. 5.31b). A similar initial increase in has been observed by Price [39] during a sonically induced polymerisation. [Pg.194]

Akuetey G, Hirsch J (1991) Contact-injected currents in polyvinylcarbazole. Phil Mag B 63 389... [Pg.64]

Ethylene-15% methacrylic acid copolymer Polyvinylcarbazole CdS and PbS incorporated into polymer films Size-quantized CdS particles incorporated into polymers... [Pg.135]

Observations Polyvinylcarbazole derivatives containing a substituted phenylpyridine... [Pg.345]

Fig. 48. Orbitals involved in the low energy shake up satellites accompanying core ionization in polystyrene, poly-l-vinylnaphthalene and polyvinylcarbazole... Fig. 48. Orbitals involved in the low energy shake up satellites accompanying core ionization in polystyrene, poly-l-vinylnaphthalene and polyvinylcarbazole...
Fig. 15. Electrophotographic spectra for polymers 1 - polydiphenylbuta-diyne, 2 - polyvinylcarbazole, 3 - poly-phenylacetylene, 4 - polyethylene, 5 -polyacrylonitrile, 6 - polyvinylchloride, 7 - polystyrene [13]... Fig. 15. Electrophotographic spectra for polymers 1 - polydiphenylbuta-diyne, 2 - polyvinylcarbazole, 3 - poly-phenylacetylene, 4 - polyethylene, 5 -polyacrylonitrile, 6 - polyvinylchloride, 7 - polystyrene [13]...
Abb. VII. 14. Theoretische Kurven fur den zweiten osmotischen Enthalpiekoeffi-zienten Bb als Funktion des Polymerisationsgrades P fiir die Systeme Polystyrol-Cyclohexan (233), Polyvinylcarbazol-Benzol O (241), Polystyrol-Benzol (233), Polymethylmethacrylat-Aceton x (241) und Polyatliyienglykol-Wasser O (246)... [Pg.539]

Fig. 2. Absorption spectra of N-isopropylcarbazole in dichloroinethane (free molecule) (solid line) and a thin film of the polymer, polyvinylcarbazole (dotted line)4)... Fig. 2. Absorption spectra of N-isopropylcarbazole in dichloroinethane (free molecule) (solid line) and a thin film of the polymer, polyvinylcarbazole (dotted line)4)...
Polyvinylcarbazole exhibits excimer emission from the carbazole unit. By use of picosecond pulse radiolysis, Tagawa et al. (1979) showed that excitation produces two excimers, the normal sandwich excimer which fluoresces at 420 nm and another which fluoresces at 375 nm. The latter high energy species decays to the lower energy species very quickly and therefore good time resolution is necessary in order to see both. [Pg.22]

Features of photoluminescece of polyvinylcarbazole doped by polymethine and xanthene dyes 02MI65. [Pg.165]

See other pages where Polyvinylcarbazole is mentioned: [Pg.798]    [Pg.239]    [Pg.535]    [Pg.602]    [Pg.568]    [Pg.1]    [Pg.554]    [Pg.215]    [Pg.3]    [Pg.79]    [Pg.527]    [Pg.196]    [Pg.239]    [Pg.138]    [Pg.60]    [Pg.18]    [Pg.251]    [Pg.816]    [Pg.202]    [Pg.434]    [Pg.46]    [Pg.3999]    [Pg.89]    [Pg.452]    [Pg.239]    [Pg.236]   
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Polyvinylcarbazole fullerene-doped

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Polyvinylcarbazoles

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