153561-74-1Relevant articles and documents
Selective synthesis of α-substituted oligothiophenes
Bauerle,Wurthner,Gotz,Effenberger
, p. 1099 - 1103 (1993)
An improved synthesis of selectively mono- and dibrominated oligothiophenes using the system N-bromosuccinimide/dimethylformamide is reported together with the preparation of the corresponding α-alkyl and α,α-dialkyl derivatives which represent potent biologically active agents.
End-capping of conjugated thiophene-benzene aromatic systems
Wex, Brigitte,Jradi, Fadi M.,Patra, Digambara,Kaafarani, Bilal R.
, p. 8778 - 8784 (2010)
The synthesis of end-capped thieno[3,2-f:4,5-f′]bis[1]benzothiophene was achieved from thiophene and 2,5-thiophenedicarboxaldehyde. Specifically, hexyl and dodecyl end-capping groups conferred reversible redox behavior as evidenced by cyclic voltammetry with oxidation potentials of 0.73 V versus Fc/Fc+ couple. An extensive spectrophotometric analysis is reported.
Probe of molecular ordering in photoconductive smectic mesophases by transient photocurrent measurement
Funahashi, Masahiro,Hanna, Jun-Ichi
, p. 303 - 310 (2001)
We have studied the carrier transport properties of the two series of smectic mesophases, from SmA to SmE phases, and from SmC to SmG phases in 2-pahenynaphthalene and terthiophene derivatives by time of flight measurements. We examine the experimental data with the hopping transport formalism as a function of the molecular distance with the reference to that from X-ray diffraction. We propose another aspect of the carrier transport characteristics as a probe for elucidating the molecular alignment in the smectic layer.
A first synthesis and physical properties of asymmetric anthracenes-thiophenes bridged with ethylene
Hwang, Min Ji,Park, Ji Hee,Jeong, Eun Bin,Kang, Il,Lee, Dong Hoon,Park, Chan Eon,Singh,Choi, Ho June,Kim, Yoon-Hi,Yoon, Yong Jin,Kwon, Soon-Ki,Lee, Sang-Gyeong
, p. 3810 - 3816 (2013/01/16)
Here we report our recent result of a new semiconductor material, which has an asymmetric structure. The synthesized molecules consist of anthracene and thiophene connected by bridged ethylene and substituted with hexyl or dodecyl groups as pendants. The semiconductors were synthesized using a McMurry coupling reaction between anthracene-2-carbaldehyde and corresponding 5-hexyl(or dodecyl)thiophene-2-carbaldehyde. A first investigation of synthesized asymmetry AVHT (9a) and AVDT (9b) for the physical properties showed that they have high oxidation potential and thermal stability. The devices prepared by using AVHT (9a) and AVDT (9b) showed the mobility of 2.6 × 10-2 cm 2/Vs and 4.4 × 10-3 cm2/Vs, respectively, in solution processed OTFTs.
Bent-core mesogens with thiophene units
Geese, Karina,Prehm, Marko,Tschierske, Carsten
supporting information; experimental part, p. 9658 - 9665 (2011/06/09)
Bent-core mesogens with thiophene and 2,2′-bithiophene units at the periphery of the aromatic core were synthesized and investigated by polarizing microscopy, XRD and electrooptical methods. Resorcinol, 2,7-naphthalenediol and 3,4′-biphenyldiol were used as bent units, phenyl thiophene-2-carboxylates form the rod-like wings and n-alkyl chains as well as olefin- and silylated-terminated alkyl chains were attached as flexible end-groups. A broad variety of different mesophase structures, incorporating ferroelectric and antiferroelectric switching smectic as well as modulated smectic phases, was obtained. Compared with the corresponding benzoates, these thiophene derived compounds form nearly identical LC phase structures, but have significantly reduced transition temperatures, which make them advantageous for applications.