Molecular Engineering Strategies of Spectral Matching and Structure Optimization for Efficient Metal-Free Organic Dyes in Dye-Sensitized Solar Cells: A Theoretical Study.

Metal-free organic dyes are promising dyes that can be applied widely in dye-sensitized solar cells (DSSCs). The rational design and selection of dyes with complementary absorption can promote the development of methods that can enhance the utilization of incident light by DSSCs, such as cosensitization and tandem devices. Based on these opinions, the structure of the reported high-performance metal-free organic dye is used as a template to design two new metal-free organic dyes, and , by replacing its donor unit with a 2-phenothiazine-phenylamine unit and fusing its three independent π-bridge units into a whole with the aim of driving the red shift and the blue shift of the absorption spectra of , respectively.

Recent advances in the approaches for improving the photovoltaic performance of porphyrin-based DSSCs.

Among other photovoltaic techniques including perovskite solar cells and organic solar cells, dye-sensitized solar cells (DSSCs) are considered to be a potential alternative to conventional silicon solar cells. Porphyrins are promising dyes with the properties of easy modification and superior light-harvesting capability. However, porphyrin dyes still suffer from a number of unfavorable aspects, which need to be addressed in order to improve the photovoltaic performance.

Novel Carbazole-Based Porous Organic Polymer for Efficient Iodine Capture and Rhodamine B Adsorption.

A new porous organic polymer (CTF-CAR), which takes carbazole as the electron-rich center unit and thiophenes as the auxiliary group, has been synthesized through catalyst-free Schiff-base polymerization. At the same time, the structure, thermal stability, morphology, and other basic properties of the polymer were analyzed by IR, NMR, TGA, and SEM. Then, CTF-CAR was applied to iodine capture and rhodamine B adsorption.

Novel zinc(II)-curcumin molecular probes bearing berberine and jatrorrhizine derivatives as potential mitochondria-targeting anti-neoplastic drugs.

Berberine and jatrorrhizine are major bioactive components that are emerging as potential anti-cancer drugs. However, no zinc(II) - berberine/jatrorrhizine - curcumin compounds have been reported in the literature to date. Therefore, the molecular mechanisms associated with their cytotoxicity remain unexplored.

Comparative Studies on the Structure-Performance Relationships of Phenothiazine-Based Organic Dyes for Dye-Sensitized Solar Cells.

A D-A-π-A dye () has been synthesized by introducing a benzothiadiazole (BTD) unit as an auxiliary acceptor in a phenothiazine-based D-π-A dye() to broaden its spectral response range and improve the device performance. Photophysical properties indicate that the inclusion of BTD in the effectively red-shifted the absorption spectra by reducing the . However, the device measurements show that the open-circuit voltage ( ) of cell (640 mV) is obviously lower than that of the cell (710 mV).

Ethyl 2-(3-chloro-2-pyridyl)-5-oxopyrazolidine-3-carboxylate.

In the mol-ecule of the title compound, C(11)H(12)ClN(3)O(3), the five membered ring adopts an envelope conformation. In the crystal structure, inter-molecular N-H⋯O hydrogen bonds link the mol-ecules into centrosymmetric dimers.

2-Nitro-N-propyl-benzamide.

The title compound, C(10)H(12)N(2)O(3), contains three mol-ecules in the asymmetric unit. In the crystal structure, inter-molecular N-H⋯O inter-actions link the mol-ecules into chains along the b axis. The crystal structure is consolidated by weak C-H⋯π inter-actions.

Ethyl 3-bromo-1-(3-chloro-pyridin-2-yl)-1H-pyrazole-5-carboxyl-ate.

The title compound, C(11)H(9)BrClN(3)O(2), is an inter-mediate in the synthesis of Rynaxypyre, a new insecticidal anthranilic diamide used as a potent and selective ryanodine receptor activator. The dihedral angle between the aromatic ring planes is 78.7 (2)°.