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

1.利用完全β-封闭的六噻吩在末端α-位的选择性重复偶联，开发了一系列长达96聚体的超长寡聚噻吩。它们的光谱测量明显表明它们像未取代的低聚噻吩一样高度共轭，并且对于高达96-mer的扩展共轭没有表现出收敛极限，这比先前推测的聚噻吩长得多。[60]已经合成了带有三脚架刚性锚的富勒烯连接的四分之一和八分之一噻吩作为高效SAM基光伏电池的组分。已经证明，三脚架锚在金电极上制备组织良好的SAM中起重要作用，导致与具有单臂锚的参考系统相比，光电流产生显著增强。根据吸收的光子数估计最高量子产率为35%f 关于我们 或基于辛噻吩的细胞。大的量子产率表明长的寡聚双环戊二烯基链有利于光电流的产生和电荷输运.低聚噻吩/富勒烯二联体（nT-C60）被纳入光伏电池，表现出相对较高的入射光-电流效率高达9.7%。高光电流的产生归因于二联体的光致电荷分离和用于空穴传输的良好的寡聚噻吩网络。A1/16 T-C60/Au器件在456 nm处测得的单色光功率转换效率为0.4%。在末端α或β位带有芘的四噻吩和四噻吩类化合物是一类新型的有机电致发光材料。利用Al/LiF双层阴极制备了这些化合物的高效单层电致发光器件。其中之一表现出1860 cd/m^2的最大亮度和0.15 lm/W的发光效率，这是单层有机EL器件中最高的性能等级。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