159254-46-3Relevant articles and documents
Effect of extended π-conjugation structure of donor-acceptor conjugated copolymers on the photoelectronic properties
Wang, Meng,Shi, Shaowei,Ma, Di,Gao, Chen,Wang, Liwei,Li, Xiaoyu,Wang, Haiqiao,Shi, Keli,Yu, Gui,Li, Yongfang
, p. 2961 - 2969 (2014)
New donor-acceptor conjugated copolymers based on alkylthienylbenzodithiophene (BDTT) and alkoxynaphthodithiophene (NDT) have been synthesized and compared with their benzo[1,2-b :4,5-b′]dithiophene (BDT)-based analogues to investigate the effect of the extended π conjugation of the polymer main chain on the physicochemical properties of the polymers. A systematic investigation into the optical properties, energy levels, field-effect transistor characteristics, and photovoltaic characteristics of these polymers was conducted. Both polymers demonstrated enhanced photovoltaic performance and increased hole mobility compared with the BDT-based analogue. However, the BDTT-based polymer (with π-conjugation extension perpendicular to main chain) gave the highest power conversion efficiency of 5.07% for the single-junction polymer solar cell, whereas the NDT-based polymer (with π-conjugation extension along the main chain) achieved the highest hole mobility of approximately 0.1 cm2 V-1 s-1 based on the field-effect transistor; this indicated that extending the π conjugation in different orientations would have a significant influence on the properties of the resulting polymers.
Synthesis and preliminary physical properties of new neutral tetraalkoxy-substituted nickel bis(1,2-dithiolene) complexes
Bui, Thanh-Tuan,Garreau-De Bonneval, Benedicte,Moineau-Chane Ching, Kathleen I.
experimental part, p. 337 - 347 (2010/06/13)
Nineteen neutral nickel bisdiphenylethenedithiolene complexes [Ni(dpedt)2], including seventeen new compounds, were synthesized and characterized by a new short, efficient and multigram-scale synthetic method. Preliminary physical investigations show that these complexes are electron-withdrawing materials exhibiting good thermal stability and high molecular absorption coefficient in the near-infrared spectral region. Electrochemical and optical properties of [Ni(dpedt)2] depend strongly on the nickel bis(1,2-dithiolene) core and very slightly on the alkyl chain lengths or configurations. These highly soluble coordination compounds are potential candidates as acceptor solution-processable materials for active layers in organic electronic devices, such as field effect transistors or photovoltaic devices.
Structural-property relationship in pyrazino[2,3-g]quinoxaline derivatives: Morphology, photophysical, and waveguide properties
Wang, Xiao,Zhou, Yan,Lei, Ting,Hu, Nan,Chen, Er-Qiang,Pei, Jian
scheme or table, p. 3735 - 3745 (2011/11/14)
The objective of this contribution is to achieve crystalline one-dimensional organic micro/nanostructures by self-assembling for active waveguides and other optoelectronic nanodevices. To improve solid emitting performance for highly efficient waveguide f
Discotic liquid crystals of transition metal complexes, 31: Establishment of mesomorphism and thermochromism of bis[1,2-bis(4-n-alkoxyphenyl)ethane-1,2-dithiolene]nickel complexes
Horie,Takagi,Hasebe,Ozawa,Ohta
, p. 1063 - 1071 (2007/10/03)
Two series of bis[1,2-bis(4-n-alkylphenyl)ethane-1,2-dithiolene]nickel, Cn-Ni (n= 1-12), and bis[1,2-bis(4-n-alkoxyphenyl)ethane-1,2-dithiolene]nickel, CnO-Ni(n = 1-12, 14, 16, 18), have been synthesized. Their mesomorphism, thermochromism, supramolecular structures and π-acceptor property have been investigated by using different scanning calorimetry, polarizing microscopy, temperature-dependent X-ray diffraction technique, electronic spectroscopy and cyclic voltammetry. From the X-ray diffraction and electronic spectral results, it was established that the CnO-Ni complexes for n ≤ 10 exhibit two differently colored discotic lamellar (DL) mesophases whereas none of the Cn-Ni complexes has a mesophase, and that the thermochromism (brown→green) is attributable to a slow transformation from the Ni-Ni bonded dimers to the Ni-S bonded dimers.
