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Poly transport characteristics

Poly(l -vinylpyrene)46, S7-S9 has hole transport characteristics similar to PVK59. ... [Pg.23]

The following photoconductive polymers can also be clarified as polymers of aromatic amines poly(N-vinylphenothiazine) and poly(N-vinylphenoxazine ° and poly(N-acrylodibenzazepine) ° Poly(N-vinylcarbazole) is basically a modified vinyldiphenylamine polymer . It has yet to be detemined if the transport characteristics of PVK with the diphenyl amino group forced into planarity are different from those of poly(N-vinyldiphenylamine) which would possess a greater freedom of rotation. The properties of PVK have been discussed in many articles and reviews [for example see Ref. ]. Several articles and patents have been published recently which deal with carbazole containing polymers other than PVK, and copolymers of N-vinylcarbazole with some other monomers. [Pg.28]

The low mass-transfer rates of copper and cadmium on the strip side of the designed BAHLM system wiU lead to the accumulation of about 15% cadmium and copper in the liquid membrane phase after each cycle. Periodical regeneration of the liquid membrane solution wiU be needed to purify it from metal ions. Additional research for choosing poly electrolytes with more effective transport characteristics is needed. [Pg.307]

As mentioned before, the incorporation of carbon nanotubes in conjugated polymers can lead to improved properties of such composites, one of them being great enhancement of the transport characteristics, which is of primary importance in organic light-emitting diodes (OLEDs) for example. Due to their solubility, which allows easy preparation, composites based on PPV (poly(phenylene vinylene)) derivatives have been extensively studied. Detailed investigation of PmPV (poly(m-phenylene... [Pg.231]

Miuahdharan, M. N., Kumar, S. A., and Thomas, S., Morphology and transport characteristics of poly(ethylene-co-vinyl acetate)/clay nanocomposites, J. Membrane Sci., 315, 147—154 (2008). [Pg.519]

Houston, K.S., Weinkauf, D.H. and Steward, F.F. 2002. Gas transport characteristic of plasma treated poly(dimethylsiloxane) and polyphosphazene membrane materials. [Pg.207]

Vannikov, A. V., Horhold, H. H., Grishina, A. D., Maltsev, E. I., Brusentseva, M. A., and Kolesnikov, V. A., Relation between electroluminescence and electron-transport characteristics of substituted poly(phenylenevinylene). High Energy Chem., 30, 115-119 (1996). [Pg.980]

Chang M, Choi D, Fu B, Reichmanis E (2013) Solvent based hydrogen bonding impact on poly(3-hexylthiophene) nanoscale morphology and charge transport characteristics. Acs Nano 7 5402-5413... [Pg.134]

Poly(l-vinylpyrene) (46a) has been synthesized using a Ziegler-Natta catalyst system [311-313], and it photoconductive properties have been studied in detail. The hole transport characteristics of (46a) are similar to those of PVK [11]. The polymer exhibits a carrier mobility of 7.5 x 10 crn /Y s at a field of 2 X 10 V/cm. Poly(A(-(l-pyrenyl)acetyl ethyleni-mine) (46b) has been obtained by cationic isomerization polymerization of 2-(l-pyrenyl)methyl-2-oxazoline, and poly(methyl-2-(l-pyrenyl)acetamido-propenoate) (46c) has been synthesized by free-radical polymerization of the corresponding monomer [314]. In contrast to the corresponding carbazole-containing polymers (23a,b), excimer formation is the major... [Pg.593]

The preceding structural characteristics dictate the state of polymer (rubbery vs. glassy vs. semicrystalline) which will strongly affect mechanical strength, thermal stability, chemical resistance and transport properties [6]. In most polymeric membranes, the polymer is in an amorphous state. However, some polymers, especially those with flexible chains of regular chemical structure (e.g., polyethylene/PE/, polypropylene/PP/or poly(vinylidene fluoride)/PVDF/), tend to form crystalline... [Pg.22]

PolyP is a participant of transmembrane ion transport processes, both in procaryptes and eukaryotes. It is widely accepted that ion channels are exclusively proteins, but recently the formation of ion-selective, voltage-activated channels by complexes of PolyP and poly-(A )-3-hydroxybutyratcs (PHBs) has been demonstrated (Reusch and Sadoff, 1988 Reusch, 1992, 1999a, 2000). Each of these have unique molecular characteristics that facilitate ion selection, solvation and transport. [Pg.99]

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Poly characteristics

Transport characteristics

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