335457-79-9Relevant articles and documents
A new liquid crystalline derivative of dibenzotetraaza[14]annulene: synthesis, characterization and the preliminary evaluation of mesomorphic properties
Grolik, Jaros?aw,Sieroń, Les?aw,Eilmes, Julita
, p. 8209 - 8213 (2006)
A new dibenzotetraaza[14]annulene ligand has been synthesized that contains two 2-hydroxybenzoyl and four 3,7-dimethyloctyloxy peripheral substituents. Its mesomorphic textures were observed by means of a polarizing optical microscopy.
Synthesis and characterization of a new phenanthrenequinoxaline-based polymer for organic solar cells
Jo, Eunsol,Park, Jong Baek,Lee, Woo-Hyung,Kim, Ji-Hoon,Jung, In Hwan,Hwang, Do-Hoon,Kang, In-Nam
, p. 2804 - 2810 (2016/07/28)
Two donor–acceptor (D-A) conjugated polymers, PQx and PphQx, composed of alkylthienyl-substituted benzo[1,2-b:4,5-b']dithiophene (BDTT) as the electron donor and the new electron acceptors quinoxaline (Qx) or phenanthrenequinoxaline (phQx), were synthesized with Stille cross-coupling reactions. The number-averaged molecular weights (Mn) of PQx and PphQx were found to be 25.1 and 23.2 kDa, respectively, with a dispersity of 2.6. The band-gap energies of PQx and PphQx are 1.82 and 1.75 eV, respectively. These results indicate that, because phQx units have highly planar structures, their inclusion in D-A polymers will be a very effective method for increasing the polymers' effective conjugation lengths. The hole mobilities of PQx and PphQx were determined to be 5.0 × 10?5 and 2.2 × 10?4 cm2 V?1 s?1, respectively. A polymer solar cell device prepared with PphQx as the active layer was found to exhibit a power conversion efficiency (PCE) of 5.03%; thus, the introduction of phQx units enhanced both the short circuit current density and PCE of the device.
Discotic nickel bis(dithiolene) complexes - Synthesis, optoelectrochemical and mesomorphic properties
Bui, Thanh-Tuan,Thiebaut, Olivier,Grelet, Eric,Achard, Marie-France,Garreau-De Bonneval, Benedicte,Moineau-Chane Ching, Kathleen I.
experimental part, p. 2663 - 2676 (2011/08/02)
Fifteen neutral long-chain-substituted discotic nickel bis(1,2-diphenyl-1, 2-ethenedithiolene) complexes [Ni(dpedt)2], including thirteen new compounds, have been synthesized by new short and efficient synthetic pathways. Physical investigations show that these complexes are thermally stable, possess good electron-accepting properties, and absorb light strongly in the near-infrared spectral region. Electrochemical and optical properties of [Ni(dpedt)2] depend moderately on the functionalities attached to the phenyl rings of the complexes. Their LUMO and HOMO energy levels are in the range -4.7 to -5.0 and -5.7 to -6.0 eV, respectively. Two octa(n-alkoxy)- substituted complexes exhibit a columnar liquid crystalline phase with hexagonal symmetry. These highly soluble complexes are potential candidates for use as electron-accepting and electron-transporting materials for active layers in organic electronic applications, such as field-effect transistors or photovoltaic devices. Electrochemical and optical studies as well as multiphase transition behavior are reported for a series of new nickel bis(dithiolene) complexes. The effects of the nature and position of the functional groupsattached to the periphery of the complexes are investigated. X-ray diffraction measurements regarding the hexagonal columnar mesophase are reported. Copyright
