14248-15-8Relevant articles and documents
Sky-blue-emitting cationic iridium complexes with oxadiazole/triazine-type counter-anions and their use for efficient solution-processed organic light-emitting diodes
Bai, Rubing,He, Lei,Meng, Xianwen,Wang, Pei
, (2021)
Counter-anion control has emerged as a facile approach to tune the properties of cationic iridium complexes for optoelectronic applications. Here we report sky-blue-emitting cationic iridium complexes with electron-deficient oxadiazole/triazine-type count
Thermally Induced Self-Doping of π-Conjugated Polymers Bearing a Pendant Neopentyl Sulfonate Group
Mori, Atsunori,Kubota, Chihiro,Fujita, Keisuke,Hayashi, Masayasu,Ogura, Tadayuki,Suzuki, Toyoko,Okano, Kentaro,Funahashi, Masahiro,Horie, Masaki
, p. 1171 - 1179 (2020)
A regioregular head-to-tail (HT)-type polythiophene was synthesized by the deprotonative nickel-catalyzed cross-coupling polymerization of 2-chlorothiophene bearing a neopentyl benzenesulfonate group at the 3-position. The obtained HT-regioregular polymer was found to dissolve in chloroform or THF, while it became soluble in water upon heating at 185 °C for 10 min by the liberation of the protected neopentyl group. The thin film of the polymer showed a remarkable improvement in conductivity of ca. 103 times before/after heating, suggesting the thermally induced intramolecular doping of polythiophene by the formed sulfonic acid at the side chain. The related doping was also observed in a poly(phenylacetylene) derivative, which was synthesized by rhodium-catalyzed polymerization. Copolymerization of such thiophene- and acetylene-bearing neopentyl sulfonate with 3-alkylthiophene and phenylacetylene, respectively, produced the corresponding statistical copolymers, demonstrating the formal self-doping of poly(3-alkylthiophene) and poly(phenylacetylene).
Synthesis and characterization of a mesogen-jacketed polyelectrolyte
Qu, Wei,Zhu, Xingqi,Chen, Jiahui,Niu, Lin,Liang, Dehai,Fan, Xinghe,Shen, Zhihao,Zhou, Qifeng
, p. 2727 - 2735 (2014/05/06)
In an attempt to construct a new kind of rodlike polyelectrolyte, poly[sodium 2,5-bis(4′-sulfophenyl)styrene] (PSBSS) was prepared from its precursor, poly[2,5-bis(4′-neopentylsulfophenyl)styrene] (PBNSS), which was polymerized by atom transfer radical polymerization. Small-angle X-ray scattering (SAXS) results demonstrate that PBNSS exhibits a hexagonal columnar phase and PSBSS exhibits a smectic A phase in bulk. The conformation of PSBSS in the aqueous solution is cylindrical, and the length and the diameter of the cylinder are ca. 25 nm and ca. 2.4 nm, respectively. The persistence length (lp) of the PSBSS chain in the aqueous solution is 11.50 ± 0.09 nm calculated by fitting the SAXS profile with the modified wormlike chain model. The conformation, the maximum length, and the lp of the chain are only weakly dependent on the concentration of the added salt. These results indicate that we have successfully obtained a new kind of polyelectrolyte with a highly rigid chain, a high charge density, and a narrow molecular weight distribution, which can serve as a new model macromolecule in studying rodlike polyelectrolytes.
