聚烷基芴电致发光特性的研究

合成并研究了聚(9-丁基芴)的电致发光和光致发光特性.通过控制其浓度,可获得从黄到蓝不同颜色的发光,并分析了发光的性质.     

白光有机电致发光器件进展

白光有机电致发光器件（WOLEDs）在显示和照明领域有着极大的应用前景，受到人们广泛的关注。本文从多个方面综述了WOLEDs近年来的研究进展，探讨了它的应用前景及需要解决的问题。     

L-核苷类抗HIV、HBV活性化合物研究进展

抗病毒新试剂的不断涌现,为HIV、HBV感染者的临床治疗提供了有效的方法.在抗病毒试剂中,核苷类化合物占据了十分重要的地位.本文阐述了核苷类化合物抗病毒的作用机理,介绍了L型核苷的发展历史及一些新型具有抗HIV、HBV生物活性的L型核苷类化合物的分类.同时,通过对一些新型具有抗HIV、HBV生物活性的核苷类化合物如BCH、FTC、OddC、d4A、Fd4C等,D型和L型不同对映异构体抗病毒活性及生物毒性的对比发现,L型异构体比其相应的D型异构体具有抗病毒活性更高、生物毒性更低的特点.药物化学家们对此产生了极大的兴趣,进一步开展了新型L型核苷类化合物设计、合成的相关研究,以便筛选出更安全有效的抗病毒试剂.     

3'-氟-2'-O,3'-C-乙烯基键联并环尿苷的合成与表征

设计合成了氟化并环核苷衍生物3'-氟-2'-O,3'-C-乙烯基键联的并环尿苷(1), 并通过¹H NMR, ¹³C NMR和HRMS分析表征了其结构. 同时, 对具有乙炔基及氟原子取代的重要中间体7的结构进行了分析确证, 并提出其可能的形成机理.     

全反射棱镜式环形激光器耦合输出的理论分析

对采用棱镜耦合器的全反射棱镜式环形激光器的耦合输出特性进行了理论研究, 导出了有“楔形”间隙的棱镜耦合器的反射系数和透射系数表达式, 给出了反射率和透过率随“楔形”间隙高度变化的理论计算曲线, 进而研究了有关材料选取、腔内振荡分量的选取及减小棱镜耦合器对环形激光腔内模式的影响等问题. 这些研究对于全反射棱镜式环形激光器在激光陀螺、激光角速度传感器等实际应用中有重要意义.     

PyTS/MV2+复合物光物理性质的研究

由于静电相互作用,PyTS溶液与MV2+溶液混合后能形成PyTS/MV2+基态复合物,由吸收光谱滴定得到其组成成分为11的二聚物;而由荧光光谱滴定得到PyTS/MV2+复合物组成成分不仅有11的二聚物,而且还有12的三聚物;由瞬态吸收光谱可观察到MV+、PyTS+的瞬态吸收峰,这表明PyTS/MV2+复合物被光激发后,发生了由PyTS到MV2+的电子转移过程;通过对吸收衰减分析得到PyTS/MV2+被光激发后的动力学过程.     

Amorphous fluorescent organic emitters for efficient solution-processed pure red electroluminescence: synthesis, purification, morphology, solid-state photoluminescence, and device characterizations

New soluble and intrinsic amorphous red emitters 1 and 2 were obtained by Suzuki coupling. Due to the close molecular polarities, separation of target products from monocoupling impurities presents a challenge. The results showed highly pure 2 would be a potentially valuable fluorophore for solution-processed pure red electroluminescence in terms of visual sensitivity with respect to 1.     

High-performance, all-solution-processed organic nanowire transistor arrays with inkjet-printing patterned electrodes

Organic nanowire (NW) transistor arrays with a mobility of as high as 1.26 cm(2)·V(-1)·S(-1) are fabricated by combining the dip-coating process to align the NW into arrays with the inkjet printing process to pattern the source/drain electrodes. A narrow gap of ~20 μm has been obtained by modifying the inkjet process. The all-solution process is proven to be a low-cost, high-yield, simple approach to fabricating high-performance organic NW transistor arrays over a large area.     

Dithienobenzothiadiazole‐Based Conjugated Polymer: Processing Solvent‐Relied Interchain Aggregation and Device Performances in Field‐Effect Transistors and Polymer Solar Cells

DTfBT‐Th₃, a new conjugated polymer based on dithienobenzothiadiazole and terthiophene, possesses a bandgap of ≈1.86 eV and a HOMO level of −5.27 eV. Due to strong interchain aggregation, DTfBT‐Th₃ can not be well dissolved in chloro­benzene (CB) and o‐dichlorobenzene (DCB) at room temperature (RT), but the polymer can be processed from hot CB and DCB solutions of ≈100 °C. In CB, with a lower solvation ability, a certain polymer chain aggregation can be preserved, even in hot solution. DTfBT‐Th₃ displays a field‐effect hole mobility of 0.55 cm² V⁻¹ s⁻¹ when fabricated from hot CB solution, which is higher than that of the device processed from hot DCB (0.16 cm² V⁻¹ s⁻¹). In DTfBT‐Th₃‐based polymer solar cells, a good power conversion efficiency from 5.37% to 6.67% can be achieved with 150−300 nm thick active layers casted from hot CB solution, while the highest efficiency for hot DCB‐processed solar cells is only 5.07%. The results demonstrate that using a solvent with a lower solvation ability, as a “wet control” process, is beneficial to preserve strong interchain aggregation of a conjugated polymer during solution processing, showing great potential to improve its performances in optoelectronic devices.

     

开放骨架亚磷酸锰（NH4）2Mn3（HPO3）4和Mn（HPO3）的离子热合成与表征

采用离子热法,在保持其它合成因素相同的条件下,仅改变离子液体种类,合成了2例不同结构的开放骨架亚磷酸锰化合物(NH4)2Mn3(HPO3)4(1)和Mn(HPO3)(2),并对其单晶结构进行了解析.化合物1是由MnO6八面体和亚磷酸根构筑成的二维层状结构化合物,其中铵根离子填充在层间平衡骨架电荷;化合物2是由MnO6八面体和亚磷酸根通过共享顶点氧原子连接构筑而成的致密的三维开放骨架.通过扫描电子显微镜(SEM)、X射线单晶结构解析、X射线粉末衍射(XRD)和元素分析(ICP-AES及CHN)对化合物进行了详细表征.化合物1的磁学性质研究结果表明其结构中的的Mn2+间存在较强的反铁磁相互作用.