“Conformation Locked” Strong Electron-Deficient Poly(p-Phenylene Vinylene) Derivatives for Ambient-Stable n-Type Field-Effect Transistors: Synthesis, Properties, and Effects of Fluorine Substitution Position was written by Lei, Ting;Xia, Xin;Wang, Jie-Yu;Liu, Chen-Jiang;Pei, Jian. And the article was included in Journal of the American Chemical Society in 2014.Related Products of 1336963-95-1 This article mentions the following:
The charge carrier mobility of p-type and ambipolar polymer field-effect transistors (FETs) was improved substantially. Nonetheless, high-mobility n-type polymers are rare, and few can be operated under ambient conditions. This situation is mainly caused by the scarcity of strong electron-deficient building blocks. Herein, the authors present two novel electron-deficient building blocks, FBDOPV-1 and FBDOPV-2, with low LUMO levels down to -4.38 eV. From both building blocks, the authors develop two poly(p-phenylene vinylene) derivatives (PPVs), FBDPPV-1 and FBDPPV-2, for high-performance n-type polymer FETs. The introduction of the fluorine atoms effectively lowers the LUMO levels of both polymers, leading to LUMO levels 鈮?4.30 eV. Fluorination endows both polymers with not only lower LUMO levels, but also more ordered thin-film packing, smaller 蟺-蟺 stacking distance, stronger interchain interaction and locked conformation of polymer backbones. All these factors provide FBDPPV-1 with high electron mobilities up to 1.70 cm2 V-1 s-1 and good stability under ambient conditions. Also, when polymers have different fluorination positions, their backbone conformations in solid state differ, eventually leading to different device performance. In the experiment, the researchers used many compounds, for example, 6-Bromo-7-fluoroindoline-2,3-dione (cas: 1336963-95-1Related Products of 1336963-95-1).
6-Bromo-7-fluoroindoline-2,3-dione (cas: 1336963-95-1) belongs to indole derivatives. Indole could be stereoselectively alkylated with chiral cyclopentyl sulfone reagent. In addition to indole, the strain-release chemistry worked for numerous substrates including amines, alcohols, thiols, carboxylic acids, imidazoles, and pyrazoles.Related Products of 1336963-95-1
Referemce:
Indole alkaloid derivatives as building blocks of natural products from聽Bacillus thuringiensis聽and聽Bacillus velezensis聽and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles