| Star-shaped oligomer and dendrimers have substantive application prospects in organic light-emitting devices (OLED), polymer solar cell (PSC), organic field-effect transistors (OFET), organic laser and chemistry and biosensor. The triphenylamine and the carbazole are the common hole transmission materials, whereas fluorine (including spirofluorene, multifluorene) are a kind of very hopeful blue color electroluminescence materials. And star-shaped oligomer and dendrimers are also the hot spot in the present studies.In this paper, we designed, synthesized and characterized a number of new multi-arm thiophen structure oligomer using the triphenylamine and the carbazole as the core, as well as five new dendrimers were designed and synthesized using fluorine and thiophen as the structural unit for OLED, they are highly effective, solvable and stable.First, two new series thiophen oligomer were designed and synthesized. Second, dendrimers were constructed using a series of rich electronic bithiophenes as the core, introducing the benzyl fluorine carbinol with an alkoxy chain alternately through the Suzuki coupling reaction and the Fride-Crafts reaction. Specific contents and results are as follows:1. Star-shaped oligomer A1, C1 and C2 (structure to see chart); dendrimers G1-G5 (structure to see chart) were synthesized.2. The target compounds and interdiates were identified, and photophysical electrochemical, and thermal properties of the target compounds were tested.3. The spectrum test indicated that all compound may use as the blue light material, the charts of dendrimers G1-G5 are change little after the annealing spectrum. This shows that these dendrimers has a good spectrum stability. And the preparation of optoelectronic devices for the future provides excellent alternative materials. |
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