[EN] POLYMERS OF BENZODITHIOPHENE AND THEIR USE AS ORGANIC SEMICONDUCTORS [FR] POLYMÈRES DE BENZODITHIOPHÈNE ET LEUR UTILISATION COMME SEMI-CONDUCTEURS
[EN] POLYMERS OF BENZODITHIOPHENE AND THEIR USE AS ORGANIC SEMICONDUCTORS [FR] POLYMÈRES DE BENZODITHIOPHÈNE ET LEUR UTILISATION COMME SEMI-CONDUCTEURS
PROBLEM TO BE SOLVED: To provide a novel boron compound and a polymer compound that improves photoelectric conversion efficiency when used in an organic photoelectric conversion element.SOLUTION: This invention provides a boron compound represented by the following formula and a method for producing a polymer compound by the Suzuki coupling reaction using the compound, where Rand Rare H or a substituent; and Wand Ware a boric acid derivative residue. The polymer compound comprises repeating units and formulae (V-A) and (II-A) and has a light absorption terminal wavelength of 700 nm or more, where X is S; and D is a group derived from the boron compound.
Methods of adding substituents to a benzodithiophene are disclosed. A benzodithiophene is reacted with a reagent to directly add the substituent to the benzene core of the benzodithiophene. This method eliminates steps from prior process and eliminates the need for hydrogenation, allowing for a safer and more scaleable process. The resulting benzodithiophenes are suitable for use in semiconductor polymers and have no loss of performance.
conjugation of cross-shaped 2 is well reflected in the intramolecular mobility of positive holes estimated by FP-TRMC, showing striking contrast to the rather higher mobility of X-shaped 1 observed by FET as well as TOF measurements as the long-range translational motion of the carriers. This strongly suggests that the intermolecular packing of these compounds plays a significant role in the range of hole mobility
3,7- Didocecyl -2,6-二(5-苯基噻吩-2-基)苯并[1,2- b:3,4- B' ]二噻吩(1)和它的4,8-双十二烷基异构体2制备作为代表性的可溶的X形和十字形π共轭低聚物体系,可深入了解烷基侧链的取代方式对电子性能的影响。吸收光谱和发射光谱以及CV数据显示十字形2的相对较长的有效共轭。然后通过快速光解时间分辨微波电导率(FP-TRMC)方法估算了固有的载流子迁移率,并与它们的顶部接触FET特性进行了比较。结果发现,尽管TRMC方法显示出2的较高迁移率大于1,的FET性能1后适当的调节和热退火明显优于的2。十字形2的有效共轭很好地反映在FP-TRMC估计的空穴的分子内迁移率中,这与FET以及长距离TOF测量所观察到的X形1的较高迁移率形成了鲜明的对比。载体的平移运动。这强烈表明,这些化合物的分子间堆积在<〜10 –2 cm 2 V –1 s –1的空穴迁移率范围内起着重要作用。
Alkylated 2,6-Bis(dicyanomethylene)-2,6-dihydrobenzo[1,2-<i>b</i>:4,5-<i>b</i>′]dithiophenes: New Soluble n-Channel Organic Semiconductors for Air-stable OFETs
作者:Tomoya Kashiki、Eigo Miyazaki、Kazuo Takimiya
DOI:10.1246/cl.2009.568
日期:2009.6.5
New solution-prosessable n-channel organic semiconductors were developed based on a 2,6-bis(dicyanomethylene)-2,6-dihydrobenzo[1,2-b:4,5-b′]dithiophene core. The OFETs showed n-channel transistor characteristics under ambient conditions with electron field-effect mobility up to 6.3×10−3 cm2 V−1 s−1.
An electronic device, such as a thin film transistor containing a semiconductor of Formula/Structure
wherein R, R′ and R″ are, for example, independently hydrogen, a suitable hydrocarbon, a suitable hetero-containing group, a halogen, or mixtures thereof; and n represents the number of repeating units.