We report the synthesis and characterization of perfluoropentacene as an n-type semiconductor for organic field-effect transistors (OFETs). Perfluoropentacene is a planar crystalline material that adopts herringbone structure observed pentacene. OFETs with were constructed using top-contact geometry, electron mobility 0.11 cm2 V-1 s-1 was observed. Bipolar pentacene function at both negative positive gate voltages. The improved p-n junctions are probably due to similar d-spacings acenes....

We have significantly improved the emission efficiency in an organic light-emitting device (OLED) based on iridium (III)bis[(4,6-di-fluoropheny)-pyridinato-N,C2′]picolinate (FIrpic). To improve efficiency, 4,4′-bis(9-carbazolyl)-2,2′-dimethyl-biphenyl, which has a high triplet energy, was used as carrier-transporting host for emissive layer. The FIrpic-based OLED exhibited maximum external quantum of 10.4%, corresponding to current 20.4 cd/A, and power 10.5 lm/W. drastically compared that...

We demonstrate high-efficiency white light emission from a phosphorescent organic light-emitting device with greenish-blue and red emissive layers. Bis{2-[3,5-bis(trifluoromethyl)phenyl]-pyridinato-N,C2′}iridium(III)picolinate [(CF3ppy)2Ir(pic)] bis{2-[2′-benzo(4,5-a)thienyl]pyridinato-N,C3′}iridium(III)acetylacetonate were employed for the materials To enhance efficiency of (CF3ppy)2Ir(pic), 4,4′-bis(9-carbazolyl)-2,2′-dimethyl-biphenyl was used as charge-transporting host. White obtained...

Oligo(2,6-anthrylene)s 1 and their dihexyl derivatives have been synthesized by Suzuki coupling using palladium catalysts. Organic field-effect transistors (OFETs) of these anthracene oligomers exhibited FET activity, high hole mobilities up to 0.18 cm2 V−1 s−1 were observed.

view Abstract Citations (143) References (35) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Large-Scale Cloud Collision in the Galactic Center Molecular Near Sagittarius B2 Hasegawa, Tetsuo ; Sato, Fumio Whiteoak, John B. Miyawaki, Ryosuke We present high-resolution images of (13)CO(J = 1 to 0) emission from molecular cloud near Sgr star-forming complex taken with Nobeyama 45 m telescope. The data, supplemented by larger maps Bell Labs 7 telescope Bally...

We report on highly efficient polymer light-emitting devices (PLEDs) achieved using a phosphorescent polymer, which is copolymer that has bis(2-phenylpyridine)iridium (acetylacetonate) [Ir(ppy)2(acac)], N,N′-diphenyl-N,N′-bis(3-methylphenyl)-[1,1′-biphenyl]-4,4′-diamine (TPD) and 2-(4-biphenyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (PBD) as side group. The an ambipolar charge-transport ability. An increase in PBD unit concentration allows improvement the efficiency of PLEDs. Ba Cs were...

Myostatin is a member of the transforming growth factor-β family with key role in inhibition muscle by negative regulation both myoblast proliferation and differentiation. Recently, genomic region on ECA18, which includes MSTN gene, was identified as candidate influencing racing performance Thoroughbreds. In this study, four SNPs g.65809482T>C, g.65868604G>T, g.66493737C>T, g.66539967A>G, were genotyped 91 Thoroughbred horses-in-training to evaluate association between genotype body...

Investigation of the etiological relationship between body fat and uterine leiomyomas.This was a case-control study. Percent measured bioelectrically with analyzer.In Sapporo City, Japan, 100 women leiomyomas (pathologically diagnosed) 200 controls who were confirmed to have no by clinical examination.Among four types classified BMI (over/under 24.0) percent 30%), occult obesity type (BMI < 24.0 > or = 30%) had highest risk. There patients muscular 30%). Women more than 0.80 waist-to-hip...

A quick method for sex determination of horses was developed. Simultaneous amplification the equine sex-determining region Y chromosome gene (SRY) and amelogenin (AMEL) accomplished presence both SRY gene. In agarose gel electrophoresis, a normal stallion showed 1 band 3 AMEL (AMELX, AMELY, AMELX/AMELY heteroduplex) bands, mare single AMELX band. XY-mares, bands were detected as in stallion, but no The present enables diagnosis XY-mare prior to cytogenetic analysis.

We have proposed a spin transfer switching (STS MO-SLM) device, based on Magneto-optical (MO) spatial light-modulation and driven by spin-polarized current flow, confirmed its basic operation characteristics experimentally. The SLM device can be operated without active-matrix devices, has resolution as small several hundred nanometers possesses the potential for being at ultra-high speed of tens nanoseconds. Unlike existing this satisfies both size requirements SLMs use in displaying...

view Abstract Citations (69) References (34) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A New Look at the Dark Cloud L1251: Sensitive Observations of Molecular Emission Sato, Fumio ; Mizuno, Akira Nagahama, Tomoo Onishi, Toshikazu Yonekura, Yoshinori Fukui, Yasuo High-sensitivity observations in (12)CO, (13)CO, C(18)O, H(13)CO(+), and SiO line have been made dark cloud L1251 Cepheus. The (13)CO gas shows a cometary distribution with U-shaped dense 'head'...

To assess the familial aggregation of uterine myomas in Japanese women with myomas, one hundred forty four requiring surgery for and 288 age-matched healthy controls were studied Hokkaido, Japan. The incidence positive first-degree family history among aged 45-54 years was greater than that (31.5% versus 15.2%, respectively, p < 0.01). Analyses categorized by status parity familiality subjects showed risk greatest who had both fewer births (parity = 0 or 1 ) as compared those more 2)...

In order to study the dependence of secondary electron emission yield γ on defect states MgO surface in plasma display panels, cathodoluminescence (CL) spectra films, which were deposited at oxygen partial pressures 0, 4.0×10−4, and 1.2×10−5 Torr, measured. The CL intensities from F (oxygen ion vacancy+one electron) F+ centers film that was high pressure (1.2×10−4 Torr), significantly increased with aging during discharge. Assuming probabilities transitions are proportional measured bands γi...

The present study was conducted to elucidate the profile of circulating gonadotropins and gonadal hormones from birth puberty relationship between seasonality hormonal secretion in both sexes Thoroughbred horses. Spring-born colts (n=6) fillies (n=9) were blood sampled weekly jugular vein 60 weeks age. Circulating FSH, LH, prolactin, testosterone, progesterone, estradiol-17β, immunoreactive (ir)-inhibin measured by radioimmunoassay. In sexes, steroid levels remarkably high at birth, rapidly...

Abstract Objective —To test the usefulness of measuring pH and refractometry index, compared with calcium carbonate concentration, preparturient mammary gland secretions for predicting parturition in mares. Design —Evaluation study. Animals —27 pregnant Thoroughbred Procedures —Preparturient secretion samples were obtained once or twice daily 10 days prior to foaling until parturition. The analyzed concentration a water hardness kit (151 samples), paper (222 index Brix refractometer (214...

It has not been common to perform regular ultrasound examination of the fetus in equine practice, due increasing volume uterus caused by fetal development. The convex three-dimensional transducer is bulb-shaped and able observe wide areas. In addition, its operation simple, making it easy create appropriate angles for various indices using a transrectal approach. aim this study was measure Thoroughbred growth throughout gestation clarify detectable period some clinical use. We demonstrated...