Decreased Expression of Hsa_circ_00001649 in Gastric Cancer and Its Clinical Significance.

. It has been reported that circRNAs are differentially expressed in a wide range of cancers and could be used as a new biomarker for diagnosis. However, the correlation between circRNAs and gastric cancer (GC) it is still unclear.

Detection of OSR2, VAV3, and PPFIA3 Methylation in the Serum of Patients with Gastric Cancer.

Aim: This study was to evaluate the diagnostic value of OSR2, VAV3, and PPFIA3 hypermethylation in gastric cancer (GC) patients.

Patients And Methods: By using methylation-specific polymerase chain reaction (MSP), we detected the methylation status in tissue and serum samples from 48 gastric cancer (GC) patients and 25 normal individuals.

Results: We found that OSR2, VAV3, and PPFIA3 were methylated in 70.

Novel Ru(II) Complex with 1H-Benzo[d]lmidazole Derivative for Dye-Sensitized Solar Cell.

It was reported that ruthenium(II) complex CBTR with 1H-benzo[d]imidazole derivative for heteroleptic donor system exhibited an enhancement of the solar cell performance, compared to N3. We took a theoretical approach about the CBTR dye. Density functional theory (DFT) and time-dependent density functional theory (TD-DFT) calculations were used to gain insight into the factors responsible for the photovoltaic properties of the dye sensitizer.

Energy Antenna for Efficient Dye-Sensitized Solar Cells.

In this study, we investigated the effect of the placement of acceptor in dual donor based dye sensitizers (TPA-PTZ-CN, PTZ-TPA-CN). Triphenylamine (TPA) and phenothiazine (PTZ) are well known as electron donors and cyanoacetic acid (CN) is a known electron acceptor. The absorption spectrum of the dyes showed different form because of the different energy levels of molecular orbital (MO) of each dye and intramolecular energy transfer (EnT).

Novel Ru(II) complex with 3-(2'-pyridyl)-1,8-naphthalimide derivative for dye-sensitized solar cells.

A novel heteroleptic ruthenium(II) complex D1 with a pni (3-(2'-pyridyl)-1,8-naphthalimide) derivative as a heteroleptic donor was designed and theoretical studies were performed of the molar absorptivity of D1 compared to that of the standard N749 dye and [Ru(dcbpy)2(ppy)] (dcbpy = 4,4'-dicarboxy-2,2'-bipyridine, ppy = 2-phenylpyridine). Density functional theory (DFT) and time-dependent density functional theory (TD-DFT) calculations were used to gain an insight into the factors responsible for the photovoltaic properties of the dye sensitizer. The results showed that the absorption spectrum of the D1 dye with the pni derivative was red-shifted compared to N749 and [Ru(dcbpy)2(ppy)], particularly, in the region above 600 nm.

Novel heteroleptic ruthenium (II) complex with DPBPZ derivative for dye-sensitized solar cells.

Herein, as Ru(II) complex for the dye-sensitized solar cells (DSSCs), we designed and investigated a novel heteroleptic ruthenium complex [Ru(dcbpy)(dpbpz)(NCS)2] with dpbpz derivative to enhance photovoltaic performance. The density functional theory (DFT) and time-dependent density functional theory (TD-DFT) calculations were used to gain insight into the factors responsible for photovoltaic properties as dye sensitizer. Molecular orbitals analysis confirmed that HOMO of [Ru(dcbpy)2(NCS)2] and [Ru(dcbpy)(dpbpz)(NCS)2] are delocalized over the ruthenium t2g character with sizable contribution from the NCS ligand orbitals.

Theoretical studies of blue phosphorescent iridium(III) complexes with phenylpyrazole and phosphines.

New blue emitting mixed ligand iridium(III) complexes comprising one cyclometalating, two phosphines trans to each other such as Ir(dppz)(PPhMe2)2(H)(C1) and Ir(dppz)(PPhMe2)2(H)(CN), [dppz = 3,5-Diphenylpyrazole] were studied to tune the phosphorescence wavelength to the deep blue region and to enhance the luminescence efficiencies. To achieve deep blue emission and increase the emission efficiency, the following must occur: (1) substitution of phenyl group on the 3-position of the pyrazole ring that lower the triplet energy enough that the quenching channel is not thermally accessible, (2) changing ancillary ligands coordinated to iridium atom to phosphine and cyano groups known as very strong field ligands. Using the density functional theory (DFT) and time-dependent DFT method calculations on the ground and excited states of the complexes, we have studied how the ancillary ligand influences the emission peak as well as MLCT transition efficiency.