TTF-BTD-PC_(70) BM聚合物电荷转移理论研究

The Study on Charge Transfer Theory of TTF-BTD-PC_(70) BM Polymer

共轭聚合物的制备及其物理与化学性质一向是被人们所关注的.近期,报道了一些TTF-BTD(苯并噻二吩)衍生物的首次合成和表征的研究,其结构除了光学和电化学表征之外,这种材料已经作为OFET(organic field-effect transistors有机场效应晶体管)中的半导体进行了研究.TTF(四硫富瓦烯)在这一领域引起了极大的关注,主要原因为它们通常可溶于普通有机溶剂中,另外它们也表现出较高OFET迁移率.BDT在共轭聚合物中是一个很受关注的结构单元.它除具有对称的平面共轭结构特性外,且紧密规律的堆积使之有较强的π-π堆积作用.在2007年报道出在苯并二噻吩基础上合成了聚合物,而且还发现它的空穴迁移率达到0.25 cm^2V^(-1)s^(-1),这在用于有机场效应晶体管的聚合物中是最高的,是非常有前景的光电材料.文章选用TTFBTD(供体),PC_(70) BM(受体)为研究对象进行研究.

The preparation of conjugated polymers and their physical and chemical properties have always been of concern. Recently,some studies on the first synthesis and characterization of TTF-BTD derivatives have been reported. Besides the optical and electrochemical characterization of the structure,this material has been used as an OFET（ organic field-effect transistors）. The semiconductor was studied. TTF（ tetrathiafulvalene） has also attracted great interest in this field because they are generally soluble in common organic solvents,and they also exhibit high OFET mobility. Benzobithiophene（BDT） is a very attractive structural unit in conjugated polymers. It has a symmetrical planar conjugated structure,and in addition it has a tightly packed structure thatmakes it have a stronger π-π stacking effect. In 2007,a benzodithiophene-based polymer was reported and found to have a hole mobility of 0. 25 cm^2 V^（-1） s^（-1）,which is the highest among polymers used in organic field-effect transistors and is very promising. Photoelectric materials. This study selected TTF-BTD（ donor） and PC（70） BM（ receptor） as research objects and conducted research.