DEVELOPMENT OF LONG DISTANCE CARRIER-TRANSPORT SYSTEMS BASED ON THE SYNTHESIS OF EXTENSIVELY CONJUGATED SULFUR-CONTAINING HETEROARONIATICS

1. 利用完全被β阻断的性噻吩在末端α-位置的选择性迭代偶联，开发了一系列长达96聚合物的超长寡硫吩。它们的光谱测量结果清楚地表明，它们与非取代的低硫噻吩一样具有高度共轭性，并且在扩展共轭到96聚时没有收敛极限，这比先前推测的多硫噻吩的收敛极限要长得多。富勒烯连接的四分之一和八邻噻吩具有三脚架刚性锚作为高效的sam基光伏电池的组成部分被合成。已经证明，三脚架锚在金电极上制备组织良好的SAM中起着重要作用，与单臂锚相比，它显著增强了光电流的产生。根据吸收光子的数量，估计最高的量子产率为35%以上。显著的量子产率表明，低聚生物烯长链有利于光电流的产生和电荷输运。在光伏电池中加入了低聚噻吩/富勒烯二偶体（nT-C60），其入射光子-电流效率高达9.7%。高光电流的产生是由于二偶体的光电诱导电荷分离和良好的空穴传输寡硫吩网络。A1/16T-C60/Au器件在456nm处的单色功率转换效率为0.4%.4。在有机电致发光器件中合成了α或β端含芘的三噻吩和四噻吩作为新型发射材料。利用Al/超薄LiF双层阴极制备了这些化合物的高效单层电致发光器件。其中一种器件的最大亮度为1860 cd/m^2，发光效率为0.15 lm/W，是单有机层EL器件中性能最高的器件。少

1. A series of extraordinarily long oligothiophenes up to the 96-mer has been developed by taking advantage of selective iterative couplings of the completely β-blocked sexithiophene at the terminal α-positions. Their spectroscopic measurements evidently indicate that they are highly conjugated like non-substituted oligothiophene and exhibit no convergent limit for the extended conjugation up to the 96-mer yet, which is much longer than that previously speculated for polythiophenes.2. [60]Fullerene-linked quarter- and octi-thiophenes bearing a tripodal rigid anchor have been synthesized as components of highly efficient SAM-based photovoltaic cells. It has been demonstrated that the tripodal anchor plays an important role in preparing a well-organized SAM on a gold electrode, leading to marked enhancement of the photocurrent generation as compared to the reference system with a one-armed anchor. The highest quantum yield was estimated based on the number of absorbed photons to be 35% f … More or the octithiophene-based cell. The remarkably large quantum yield indicates that the long oligotbiophene chain can facilitate the generation and charge transport of photocurrent.3. Oligothiophene/fullerene dyads (nT-C60) are incorporated in photovoltaic cells, which demonstrate relatively high incident photon-to-current efficiency up to 9.7 %. The generation of high photocurrents is ascribable to the ready photoinduced charge separation of the dyads and a good oligothiophene network for hole transport. The monochromatic power conversion efficiency of the A1/16T-C60/Au device measured at 456 nm is 0.4%.4. Ter- and quater-thiophenes bearing pyrenes at the terminal α or β positions have been synthesized as novel emitting materials in organic electroluminescence devices. The efficient single layer EL devices of these compounds are fabricated by use of an Al/ultrathin LiF bilayer cathode. One of them exhibits a maximum luminance of 1860 cd/m^2 and a luminous efficiency of 0.15 lm/W, which are of the highest performance class among single-organic-layer EL devices. Less