1491133-64-2Relevant academic research and scientific papers
Production of [pisen[pisen] and derivatives thereof
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Paragraph 0064; 0065, (2017/07/07)
PROBLEM TO BE SOLVED: To provide a method of producing a picene and a derivative thereof suitable for uses of organic semiconductors, thin film transistors, field effect transistors or solar batteries or the like, in a short reaction process with high yield.SOLUTION: A method of producing a picene of formula 8 and a derivative thereof includes, as represented compounds and steps, a step 1 to subject a compound of formula 5 and a compound of formula 6 to a coupling reaction for producing a compound of formula 7, and a step 2 to subject the compound of formula 7 to dehydrohalogenation.
Synthesis of 2,9-dialkylated phenanthro[1,2-b:8,7-b′]dithiophenes via cross-coupling reactions and sequential Lewis acid-catalyzed regioselective cycloaromatization of epoxide
Hyodo, Keita,Nonobe, Hikaru,Nishinaga, Shuhei,Nishihara, Yasushi
, p. 4002 - 4005 (2014/07/08)
Phenanthro[1,2-b:8,7-b′]dithiophene (PDT) was prepared via Suzuki-Miyaura or Negishi cross-coupling of a 2-thienylboron or -zinc compound with 1,4-dibromobenzene, followed by Lewis acid-catalyzed regioselective cycloaromatization of the epoxide. A series of 2,9-dialkylated phenanthro[1,2-b:8,7-b′]dithiophene (PDT) derivatives could also be synthesized in good yields by Suzuki-Miyaura coupling of the brominated PDT with alkylboranes by introducing linear alkyl substituents.
Phenanthro[1,2-b:8,7-b']dithiophene: A new picene-type molecule for transistor applications
Nishihara, Yasushi,Kinoshita, Megumi,Hyodo, Keita,Okuda, Yasuhiro,Eguchi, Ritsuko,Goto, Hidenori,Hamao, Shino,Takabayashi, Yasuhiro,Kubozono, Yoshihiro
, p. 19341 - 19347 (2013/10/22)
A new picene-type molecule, phenanthro[1,2-b:8,7-b']dithiophene, has been synthesized for use in organic field-effect transistors (OFETs). The molecule consists of a phenanthrene core with two thiophene rings fused on the ends. This molecule can be recognized as a picene analogue. The electronic structure of the molecule was determined by its optical absorption spectrum together with a theoretical calculation based on density functional theory (DFT). The topological and electronic structures of thin films produced by direct thermal evaporation of the compounds and by deposition from a solution were characterized by optical imaging, X-ray diffraction, and atomic force microscopy. FET devices were fabricated with these thin films, and showed field-effect mobility as high as 10-1 cm2 V-1 s-1.
