Organic solar cells based on planar metallophthalocyanines (MPc, M = Cu, Zn, Pd, Pc)/3,4,9,10-perylene tetracarboxylic bisbenzimidazole (PTCBI) were investigated. PdPc/PTCBI solar cells have a peak external quantum efficiency of 30.9%, which is almost twice as those of conventional solar cells based on CuPc and ZnPc/PTCBI. Optical modeling was carried out using a transfer matrix algorithm in order to determine the exciton diffusion lengths for four MPcs. External quantum efficiency measurement and optical modeling indicate that PdPc has the longest exciton diffusion length among four different MPcs, leading to a power conversion efficiency of 1.3% and a short circuit current density of 4.0 mA/cm2 under the illumination of AM 1.5 G 100 mW/cm2. When fullerene (C60) was used as an acceptor, solar cells based on PdPc exhibit a short circuit current density of 6.8 mA/cm2, resulting in a power conversion efficiency of 2.2%, while solar cells based on CuPc show 1.6%.

This paper reports a low-temperature polycrystalline silicon (LTPS) fabrication process on plastic substrate for a flexible AMOLED display. Characteristics of fabricated TFTs showed excellent performance with field effect mobility of 124.1 cm 2 /Vs, on/off ratio of >10 8 , subthreshold slope of 0.30V/dec, and threshold voltage of -2.03V. Internal scan drive circuits, 1:3 demux, and compensation circuits were successfully integrated on the backplane of a 166ppi 2.8" WQVGA flexible AMOLED panel.

Direct synthesis of hydrogen peroxide (H2O2) from hydrogen (H2) and oxygen (O2) has been widely investigated as an attractive way for small-scale/on-site H2O2 production. Among various catalysts, carbon-supported AuPd catalysts have been reported to exhibit the most promising H2O2 productivity and selectivity. In this work, to better understand the catalytic role of the surface properties and porous structures of the carbon supports, we systematically investigated AuPd catalysts supported on various nanostructured carbons including activated carbon, carbon nanotube, carbon black, and ordered mesoporous carbons. The results showed that a high density of oxygen functional groups on the carbon surface was essential for synthesizing highly dispersed bimetallic catalysts with effective AuPd alloying, which is a prerequisite for achieving high H2O2 selectivity. Regarding porous structure, a solely mesoporous carbon support was superior to microporous ones. Microporous carbons such as activated carbon suffered from diffusion limitation, leading to significantly slower H2 conversion than mesoporous catalysts. Furthermore, H2O2 produced from AuPd catalyst in the micropores was more prone to subsequent disproportionation/hydrogenation into H2O due to retarded diffusion of the H2O2 out of the microporous structure, which led to decreased H2O2 selectivity. The present study showed that solely mesoporous carbons with high surface oxygen content are most desirable as a support for AuPd catalyst in order to achieve high H2O2 productivity and selectivity.

The absence of relevant guidelines for Wilms tumor 1 (WT1) gene quantification as a measurable residual disease (MRD) assessment for patients with acute myeloid leukemia (AML) undergoing allogeneic hematopoietic stem cell transplantation (allo-HSCT) has limited the widespread use in practice. We investigated optimal time points, thresholds, and candidates for the bone marrow WT1 MRD assay in 425 consecutive patients with AML who underwent allo-HSCT. WT1 expression kinetics before allo-HSCT and at 1 or 3 months after allo-HSCT were determined by real-time PCR using the European LeukemiaNet (ELN) normalized method. Relapsed patients had significantly higher WT1 levels before allo-HSCT and at 3 months after allo-HSCT. The best time point for the WT1 MRD assay was before allo-HSCT by the receiver operating characteristic curve. Among various thresholds, 250 copies recommended from ELN researchers were mostly predictive of post-transplant relapse. In multivariate analysis, WT1 MRD positivity independently predicted relapse, resulting in inferior survival. In subgroup analyses, pretransplant WT1 MRD positivity was predictive of post-transplant relapse in the intermediate group, whereas WT1 MRD positivity occurred at 3 months after allo-HSCT in favorable and adverse risk groups. Among MRD-positive patients before allo-HSCT, all patients who were MRD positive at 3 months relapsed within 6 months. The WT1 MRD assay before allo-HSCT or 3 months after allo-HSCT is useful for predicting post-transplant relapse with a different significance in each risk group by time points, showing the benefit of multiple tests over time. Such monitoring is particularly available in patients with AML without specific molecular targets.