83125-18-2Relevant academic research and scientific papers
Accessing π-expanded heterocyclics beyond dibenzothiophene: Syntheses and properties of phenanthrothiophenes
Venkateswarlu, Samala,Prakoso, Suhendro Purbo,Kumar, Sushil,Tao, Yu-Tai
, p. 437 - 445 (2020/02/13)
A series of phenanthrothiophenes are designed and synthesized from polyarylthiophenes through regioselective Scholl reactions in one step using iron chloride as catalyst. The molecular structures of these heteroarenes displayed multiple twisted fjords, which perturb the shapes of the polycyclic frameworks to pack in slipped to near-perfect face-to-face styles in parallel or antiparallel packings. Field-effect transistor devices using single crystals of 6,12-difluorodiphenanthro[9, 10-b:9′, 10′]thiophene gave a hole mobility of 0.22 cm2 V?1 s?1.
H-type acceptor material and preparation method thereof
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, (2019/01/14)
The invention discloses an H-type acceptor material and a preparation thereof, and belongs to the field of organic photoelectric material preparation. The acceptor material cannot rotate as both two arms of the acceptor material are connected with a core
One-pot oxidation and bromination of 3,4-diaryl-2,5-dihydrothiophenes using Br2: Synthesis and application of 3,4-diaryl-2,5-dibromothiophenes
Dang, Yizhe,Chen, Yi
, p. 6901 - 6904 (2008/02/11)
(Chemical Equation Presented) A class of 3,4-diaryl-2,5-dibromothiophenes (1b-5b) was synthesized by a one-pot reaction of 3,4-diaryl-2,5- dihydrothiophenes with Br2 reagent in excellent yield (83-92%). It was found that Br2 performed a double function (oxidation and bromination) during the conversion of 3,4-diaryl-2,5-dihydrothiophenes to 3,4-diaryl-2,5-dibromothiophenes. The application of 3,4-diaryl-2,5- dibromothiophenes used as building blocks was also investigated. Employing 3,4-diphenyl-2,5-dibromothiophene (1b) as a template, a class of 2,3,4,5-tetraarylthiophenes was prepared by the Suzuki coupling reaction. This provided a new and simple approach to the preparation of 2,3,4,5- tetraarylthiophenes.
Synthesis, characterization, and electrogenerated chemiluminescence of phenyl-substituted, phenyl-annulated, and spirofluorenyl-bridged oligothiophenes
Mitschke, Ullrich,Baeuerle, Peter
, p. 740 - 753 (2007/10/03)
To overcome the insolubility of higher oligothiophenes and simultaneously to enhance their processability with respect to an application in molecularly doped organic light-emitting devices (OLEDs) we synthesized phenyl-substituted, phenyl-annulated, and spirofluorenyl-bridged oligothiophenes 1-5. Significantly improved solubilities in polar solvents of up to three orders of magnitude were found and their optical and electrochemical properties were investigated in solution. Reflecting small conformational changes and the almost complete electronic separation of the substituents, phenyl substitution and the introduction of a spiro core by bridging the central bithienyl unit only slightly affected optical and redox properties in comparison to the unmodified oligothiophenes (6-8). In contrast, the presence of an isothianaphthene (benzo[c]thiophene) unit in the oligomeric chain led to a distinct approximation of the frontier orbitals and consequently to a red-shift of both absorption and fluorescence. Finally, we demonstrated the applicability of some oligomers as dopants for OLEDs by electrogenerated chemiluminescence (ECL).
NOVEL RING CONTRACTIONS OF 2,7-DIHYDRO-3,6-DIPHENYL-1,4,5-THIADIAZEPINE VIA A HALOGENATION-DEHALOGENATION PROCESS
Kamata, Kichinosuke,Tsuge, Otohiko
, p. 1497 - 1500 (2007/10/02)
2,7-Dihydro-3,6-diphenyl-1,4,5-thiadiazepine undergoes novel ring contractions via a halogenation-dehalogenation process in methanol, giving sulfur-containing five-membered cyclic compounds: this result is a great contrast to the ring contraction with ext
