基于蒽醌和三苯胺的红色延迟荧光材料

通过Suzuki反应,在电子受体基团蒽醌(AQ)的α-位引入电子给体基团三苯胺(TPA),合成了3种红色延迟荧光材料(1-TPA-AQ,1,4-2TPA-AQ和1,8-2TPA-AQ),目标化合物的结构经核磁、质谱和元素分析确证。通过理论计算、紫外-可见(UV-vis)吸收光谱、荧光发射光谱和循环伏安(CV)测试,系统地考察了3种化合物的光物理和电化学性质。结果表明,3种化合物的单线态-三线态能级差(ΔEST)分别为0.08、0.09和0.06 e V,最高占有分子轨道(HOMO)能级分别为–5.26、–5.23和–5.27 e V,最低未占分子轨道(LUMO)能级分别为–3.14、–3.10和–3.10 e V。1-TPA-AQ,1,4-2TPA-AQ和1,8-2TPA-AQ在薄膜中的荧光发射波长分别为648、649和636 nm,延迟荧光寿命分别为1.6、2.6和2.1μs,三者均可作为红色延迟荧光材料。     

基于1,8-萘酰亚胺延迟荧光材料的合成及性能研究

通过Suzuki交叉偶联反应得到三苯胺和N-苯基咔唑分别取代的1,8-萘酰亚胺衍生物,化合物结构经1HNMR、质谱和元素分析表征。两种材料都是双极分子,存在分子内电荷转移,单线态-三线态能级差分别为0.40和0.32 eV。荧光量子效率和荧光寿命的测试结果表明,两种材料均能发射延迟荧光。     

恶二唑基聚芴型高分子电致发光材料的合成与光电性能分析

以Grignard反应和脱水缩聚的方法合成了一种含恶二唑基团的聚芴型电致发光材料,通过紫外-可见光谱和电化学法得到该材料的能带隙约为2.99 eV,最低未占有分子轨道能级约为2.95 eV,其有望成为应用在蓝色电致发光器件中的高分子电子传输材料.     

新型D-π-A结构的分子设计及理论研究

应用D-π-A结构理论设计了一类以吖啶酮衍生物为电子供体的新型化合物,并采用密度泛函理论方法初步研究了这类新型有化合物的前线分子轨道。研究表明:化合物Ⅱ、Ⅲ具有较好的分子内电荷转移现象,且三种化合物的激发态能级均高于TiO2导带的能级(-4.40 eV),这些化合物能够作为太阳能电池中的染料敏化剂。     

苯乙烯基三苯胺（吲哚啉）衍生物的合成及性能研究

以苯胺、咔唑、吲哚啉和碘苯等为原料,合成了五种系列化的新型苯乙烯基三苯胺（吲哚啉）类的硝基化合物,通过氢谱、高分辨质谱等对其进行了结构表征. 并对化合物的紫外-可见吸收光谱、荧光发射光谱和循环伏安等进行了研究. 结果表明,含螺旋桨构型三苯胺基团化合物相比具有平面刚性构型的9-苯基咔唑基团化合物,表现出较强的分子内电荷转移能力（ICT作用）,同时在三苯胺基团上引入给电子基团则有利于增强化合物的ICT作用,而含吲哚啉基团化合物则比三苯胺基团化合物表现出更强的ICT作用     

热活性型延迟荧光材料的研究进展

有机电致发光二极管（OLED）在全彩色平板显示和固态照明领域具有广泛的应用而倍受关注。在电场激发下,单重态激子与三重态激子的比值为1∶3。传统的荧光材料只能利用单重态激子发光,内部量子效率（IQE）最高为25%。热活性型延迟荧光（TADF）材料可将三重态激子反系间跨越（RISC）到单重态能级而发出延迟荧光,理论上内部量子效率可达100%。设计TADF材料的关键在于分子要同时满足高荧光量子产率和小的第一激发单重态与第一激发三重态能级差（ΔE_ST）。综述了近几年TADF材料的研究进展,重点介绍了TADF材料的设计思想和器件性能。     

ISOMERIZATION OF QUADRICYCLANE TO NORBORNADIENE GROUP IN A QUADRICYCLANE-STEROID-DIBE-NZOYLMETHANATOBORON DIFLUORIDE SYSTEM PHOTOSENSITIZED BY LONG-DISTANCE INTRAMOLECULAR ELECTRON TRANSFER

本文设计并合成了四环烷甾体二苯甲酰基甲烷硼氟络合物组成的二元化合物新体系（ＱＣＳＢＦ）．利用稳态光谱和时间分辨光谱，对其光物理行为和光化学反应进行了研究．结果表明：此二元化合物分子内ＢＦ基团的荧光被远距离的ＱＣ基团有效地猝灭，选择激发ＢＦ基团，可导致四环烷到降冰片二烯的异构化，此过程是通过分子内单重态电子转移生成ＱＣ正离子，该正离子异构化生成降冰片二烯正离子，然后经电子复合实现其分子内光敏异构化反应．通过稳态和时间分辨技术，测得此分子内远距离单重态电子转移和ＱＣ正离子异构化的效率分别为０．２５和０．２３．这项工作表明：当给体与受体距离为１９时，二者之间仍能发生有效的电子转移，这种电子转移过程是通过“键”进行的．     

用于染料敏化太阳能电池的苊并吡嗪类染料的设计与合成，

以吡嗪环作为吸电子基团,单羧基为连接基团,选用不同的芳环供电基团设计合成了3个苊并吡嗪类染料敏化太阳能电池(DSSC)染料。其中,以二苯胺为供电基的染料Va性能最好,主要吸光范围是400~500 nm,ELUMO为-1.10 eV,远负于TiO2的导带能级-0.5 eV,说明染料的激发态电子注入到纳米TiO2的导带在热力学上是可行的;EHOMO为1.31 eV,远正于I-/I3-的氧化还原电位0.4 eV,说明处于氧化态的染料分子从氧化还原电对得到电子再生。光电转换效率最高为3.06%,达到经典染料N719效率的43%。     

三芳胺-均苯三甲酰胺衍生物的自组装及光电化学性能

以超分子组装的方法实现三芳胺功能单元的长程有序排列，对于实现有机光电功能材料优异的导电性及空穴传输能力具有重要意义。该文合成一种新型三芳胺-均苯三甲酰胺基衍生物N1,N3,N5-三(3-((4-(双(4-(十二烷氧基)苯基)氨基)苯基)氨基)丙基)-1,3,5-苯三甲酰胺（H1）。通过紫外-可见吸收光谱及荧光光谱研究表明，H1在弱极性溶剂正庚烷中有较明显的自组装特性；分别用光学显微镜和扫描电子显微镜（SEM）观察了H1的自组装形貌；通过量子化学计算和电化学性质测试研究了H1的空穴传输性能，计算结果和实验测得的HOMO能级（-5.14 eV）、LUMO能级（-1.80 eV）均与钙钛矿能级匹配，同时测得H1的热分解温度为445°C。研究表明，H1具备作为空穴传输材料应用于钙钛矿太阳能电池的可能性。     

含噁二唑-三苯胺基的双光子化合物合成及光谱研究

为了开发高强度的有机电致发光材料,合成了一种含空穴传输基团三苯胺、电子传输基团1,3,4-噁二唑,所含的三苯胺和1,3,4-噁二唑基用吡啶基链接,相互之间存在共轭,可形成分子内的偶极,有利于提高载流子传输的性能。用红外光谱、质谱、核磁共振谱和元素分析对合成化合物进行了结构表征,用荧光光谱仪对它们的荧光性能进行了测试,所合成化合物的荧光性能较好,荧光发射波长为446 nm,并且荧光量子产率最高能达到0.42。     

Insect antifeedant properties of anthranoids from the genusVismia

Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria.     

Methyl 2,4,6-decatrienoates Attract Stink Bugs and Tachinid Parasitoids

Halyomorpha halys (Stål) (Pentatomidae), called the brown marmorated stink bug (BMSB), is a newly invasive species in the eastern USA that is rapidly spreading from the original point of establishment in Allentown, PA. In its native range, the BMSB is reportedly attracted to methyl (E,E,Z)-2,4,6-decatrienoate, the male-produced pheromone of another pentatomid common in eastern Asia, Plautia stali Scott. In North America, Thyanta spp. are the only pentatomids known to produce methyl 2,4,6-decatrienoate [the (E,Z,Z)-isomer] as part of their pheromones. Methyl 2,4,6-decatrienoates were field-tested in Maryland to monitor the spread of the BMSB and to explore the possibility that Thyanta spp. are an alternate host for parasitic tachinid flies that use stink bug pheromones as host-finding kairomones. Here we report the first captures of adult and nymph BMSBs in traps baited with methyl (E,E,Z)-2,4,6-decatrienoate in central Maryland and present data verifying that the tachinid, Euclytia flava (Townsend), exploits methyl (E,Z,Z)-2,4,6-decatrienoate as a kairomone. We also report the unexpected finding that various isomers of methyl 2,4,6-decatrienoate attract Acrosternum hilare (Say), although this bug apparently does not produce methyl decatrienoates. Other stink bugs and tachinids native to North America were also attracted to methyl 2,4,6-decatrienoates. These data indicate there are Heteroptera in North America in addition to Thyanta spp. that probably use methyl 2,4,6-decatrienoates as pheromones. The evidence that some pentatomids exploit the pheromones of other true bugs as kairomones to find food or to congregate as a passive defense against tachinid parasitism is discussed.     

2005～2006年国外塑料工业进展

收集了2005年7月～2006年6月国外塑料工业的相关资料，介绍了2005—2006年国外塑料工业的发展情况。提供了世界塑料产量、消费量及全球各类树脂生产量以及各国塑料制品的进出口情况。作为对比，介绍了中国塑料的生产情况。按通用热塑性树脂（聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂）、工程塑料（聚酰胺、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚）、通用热固性树脂（酚醛、聚氨酯、不饱和树脂、环氧树脂）、特种工程塑料（聚苯硫醚、液晶聚合物、聚醚醚酮）的品种顺序，对树脂的产量、消费量、供需状况及合成工艺、产品开发、树脂品种的延伸及应用的扩展作了详细的介绍。     

2007～2008年世界塑料工业进展

收集了2007年7月～2008年6月世界塑料工业的相关资料,介绍了2007～2008年国外塑料工业的发展情况,提供了世界塑料产量、消费量及全球各类树脂的需求量及产能情况.按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(尼龙、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、特种工程塑料(聚苯·硫醚、液晶聚合物、聚醚醚酮)、通用热固性树脂(酚醛、聚氨酯、不饱和聚酯树脂、环氧树脂)不同品种的顺序,对树脂的产量、消费量、供需状况及合成工艺、产品应用开发、树脂品种的延伸及应用的进一步扩展等技术作了详细介绍.     

Inorganic/organic nanocomposite coatings: The next step in coating performance

Inorganic/organic hybrid materials have considerable promise and are beginning to become a major area of research for many coating usages, including abrasion and corrosion resistance. Our primary approach is to prepare the inorganic phase in situ within the film formation process of the organic phase. The inorganic phase is introduced via sol-gel chemistry into a thermosetting organic phase. By this method, the size, periodicity, spatial positioning, and density of the inorganic phase can be controlled. An important aspect of the inorganic/organic hybrid materials is the coupling agent. The initial task of the coupling agent is to provide uniform mixing of the oligomeric organic phase with the sol-gel precursors, which are otherwise immiscible. UV-curable inorganic/organic hybrid systems have the advantages of a rapid cure and the ability to be used on heat sensitive substrates such as molded plastics. Also, it is possible to have better control of the growth of the inorganic phase using UV curing. It is our ultimate goal to completely separate the curing of inorganic and organic phases to gain complete control over the morphology, and hence optimization of “all” the coating properties. Thus far, it has been found that concomitant UV curing of the inorganic and organic phases using titanium sol-gel precursors afforded nanocomposite coatings which completely block the substrate from UV light while maintaining a transparent to visible light. Also, it has been found that the morphology of the inorganic phase is highly dependent on the concentration and reactivity of the coupling agent. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004, in Chicago, IL.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Some Large Wood-Boring Beetles in Southeastern USA

Ethanol and α-pinene were tested as attractants for large wood-boring pine beetles in Alabama, Florida, Georgia, North Carolina, and South Carolina in 2002–2004. Multiple-funnel traps baited with (−)-α-pinene (released at about 2 g/d at 25–28°C) were attractive to the following Cerambycidae: Acanthocinus nodosus, A. obsoletus, Arhopalus rusticus nubilus, Asemum striatum, Monochamus titillator, Prionus pocularis, Xylotrechus integer, and X. sagittatus sagittatus. Buprestis lineata (Buprestidae), Alaus myops (Elateridae), and Hylobius pales and Pachylobius picivorus (Curculionidae) were also attracted to traps baited with (−)-α-pinene. In many locations, ethanol synergized attraction of the cerambycids Acanthocinus nodosus, A. obsoletus, Arhopalus r. nubilus, Monochamus titillator, and Xylotrechus s. sagittatus (but not Asemum striatum, Prionus pocularis, or Xylotrechus integer) to traps baited with (−)-α-pinene. Similarly, attraction of Alaus myops, Hylobius pales, and Pachylobius picivorus (but not Buprestis lineata) to traps baited with (−)-α-pinene was synergized by ethanol. These results provide support for the use of traps baited with ethanol and (−)-α-pinene to detect and monitor common large wood-boring beetles from the southeastern region of the USA at ports-of-entry in other countries, as well as forested areas in the USA.