Reactions of N-vinyl carbazole with anionic initiators.
N-vinyl carbazole reactions with anionic initiators, discussing radical anion and polymer formation and ESR spectra
POLYMERIZATION↗
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Solar cells of metal-free phthalocyanine dispersed in polyvinyl carbazole. 1: Effects of the recrystallization of H2PC on cell characteristics
The development of an organic semiconductor solar cell and the effects of the recrystallization of metal free phthalocyanine (H2PC) on the characteristics of NESA/H2PC-PVK/Au sandwich cells were investigated. Alfa-H2PC sandwich cells showed photovoltage and photocurrent in a two direction opposite to that shown y as supplied H2PC cells, which consists mainly of beta-H2PC. Some difference was observed in the response times of the two cells. It is suggested that photocharacteristics change with the specific resistance of the H2PC, which is related to its crystal forms. In the cells with low resistance H2PC carriers are generated in H2PC by illumination, while in high resistance H2PC cells, carriers are generated in PVK which is sensitized with H2PC.
Shimura, M.↗
Photovoltaic effect in poly-N-vinylcarbazole- iodine charge transfer complex.
Poly-N-vinyl carbazole-iodine charge transfer photovoltaic effect spectral and intensity dependence, noting possible radiation detection and energy conversion applications
IODINE↗
Spin resonance, Hall effect, and transport properties of poly
Hall effect, resistivity, spin resonance and thermoelectric properties of poly/N-vinyl carbazole/-iodine complex, demonstrating charge transfer state existence in system
ELECTRIC RESISTANCE↗
Method of using photovoltaic cell using poly-N-vinylcarbazole complex Patent
Method of producing output voltage from photovoltaic cell using poly-N-vinyl carbazole complexed with iodine
Hermann, A. M.↗
Stabilities of nitrogen containing heterocyclic radicals and geometrical influences on non-radiative processes in organic molecules
Theoretical and experimental work on generating radicals by removal of a hydrogen atom from pyrrole, imidazole, indole, and carbazole is reported. Photophysical studies on indolizine and related aza-derivatives show that materials having large S2-S1 energy gaps might exhibit upper state fluorescence. Photodecomposition quantum yields of a series of sterically hindered p-aminobenzene diazonium cations in water were found structurally and wavelength dependent and unquenched in aqueous sodium bromide solutions. Photodecomposition of diazonium materials did not produce a metastable species with a longer lifetime than 1 msec.
Evleth, E. M.↗
Photothermoplastic films for holographic recording
The electrophotographic and sensitometric characteristics of poly-N-vinyl carbazole photothermoplastic films, sensitized by an amorphous-Se sublayer are examined. It is shown that the photosensitivity of the material can be improved and its spectral range can be expanded by sensitization of amorphous Se with additions of Te, As, and Sb; this can be accomplished without a significant reduction in diffraction efficiency and resolving power.
Neduzhiy, S. A.↗
Diffraction efficiency of photothermoplastic layers for the recording of discrete holograms
An experimental and theoretical study of the dependence of eta of a digital phase Fourier hologram of a point object on the amount of deformation delta and the discrete-structure parameters representing the hologram is detailed. An expression is given for eta. Experiments were performed on photothermoplastic layers based on polyvinyl carbazole and trinitrofluorenone charge transfer complexes. The maximum eta, 2%, is found at delta = 0.56 micron.
Koreshev, S. N.↗
Nitric-oxide synthase is a mechanical signal transducer that modulates talin and vinculin expression
Mechanical stimuli can cause changes in muscle mass and structure which indicate that mechanisms exist for transducing mechanical stimuli into signals that influence gene expression. Myotendinous junctions show adaptations to modified muscle loading which suggest that these are transcriptionally distinct domains in muscle fibers that may experience local regulation of expression of structural proteins that are concentrated at these sites. Vinculin and talin are cytoskeletal proteins that are highly enriched at myotendinous junctions that we hypothesize to be subject to local transcriptional regulation. Our findings show that mechanical stimulation of muscle cells in vivo and in vitro causes an increase in the expression of vinculin and talin that is mediated by nitric oxide. Furthermore, nitric oxide-stimulated increases in vinculin and talin expression occur through a protein kinase G-dependent pathway and therefore differ from other mechanisms through which nitric oxide has been shown previously to modulate transcription. Analysis of vinculin mRNA distribution in mechanically stimulated muscle fibers shows that the mRNA is highly concentrated at myotendinous junctions, which supports the hypothesis that myotendinous junctions are distinct domains in which the expression of cytoskeletal proteins is modulated by mechanical stimuli through a nitric oxide and protein kinase G-dependent pathway.
NASA Discipline Musculoskeletal↗