Synthesis of Well-Defined Head-to-Tail-Type Oligothiophenes by Regioselective Deprotonation of 3-Substituted Thiophenes and Nickel-Catalyzed Cross-Coupling Reaction
作者:Shota Tanaka、Shunsuke Tamba、Daiki Tanaka、Atsushi Sugie、Atsunori Mori
DOI:10.1021/ja205953g
日期:2011.10.26
realized by regioselective metalation of 3-substituted thiophenes with the Knochel-Hauser base (TMPMgCl·LiCl) and coupling with bromothiophene using a nickel catalyst. Treatment of 3-hexylthiophene with TMPMgCl·LiCl induces metalation at the 5-position selectively. Subsequent addition of 2-bromo-3-hexylthiophene and a nickel catalyst leads to the corresponding bithiophene. The obtained bithiophene is
METHOD OF SELECTIVELY SEPARATING CARBON NANOTUBES, ELECTRODE COMPRISING METALLIC CARBON NANOTUBES SEPARATED BY THE METHOD AND OLIGOMER DISPERSANT FOR SELECTIVELY SEPARATING CARBON NANOTUBES
申请人:SHIN Hyeon-Jin
公开号:US20090020732A1
公开(公告)日:2009-01-22
Provided is method of selectively separating carbon nanotubes into metallic carbon nanotubes and semiconducting carbon nanotubes, the method including: preparing a mixture including a dispersant, carbon nanotubes, and a solvent; dispersing the carbon nanotubes in the mixture; and separating the semiconducting carbon nanotubes from the mixture in which the carbon nanotubes are dispersed, wherein the dispersant is an oligomer including about 2 to about 24 repeat units, each including a head moiety and a tail moiety, wherein the head moiety comprises 1 to about 5 aromatic hetero rings, and the tail moiety comprises a hydrocarbon chain or chains connected to the head moiety.
OLIGOTHIOPHENE-ARYLENE DERIVATIVES AND ORGANIC THIN FILM TRANSISTORS USING THE SAME
申请人:Jeong Eun Jeong
公开号:US20090256143A1
公开(公告)日:2009-10-15
An oligothiophene-arylene derivative wherein an arylene having n-type semiconductor characteristics is introduced into an oligothiophene having p-type semiconductor characteristics, thereby simultaneously exhibiting both p-type and n-type semiconductor characteristics. Further, an organic thin film transistor using the oligothiophene-arylene derivative.