二苯基-2-(9,9'-螺二芴基)膦的合成与表征

以溴苯为起始原料,经过格氏反应,偶联反应,加成反应,酸催化闭环合成了2-溴-9,9'-螺二芴,最后与二苯基膦锂锂化反应合成目标化合物二苯基-2-(9,9'-螺二芴基)膦,总收率为60.6%。通过1H NMR确证了目标化合物的结构。     

Cadogan反应还原2-硝基苯基芴得咔唑

由Cadogan反应,2-硝基联苯在有机磷试剂存在下,硝基被还原成环得到咔唑类化合物得到启发,设计两步反应,第-步邻溴硝基苯与9,9-二甲基2-芴硼酸为原料经Suzuki偶联反应,甲苯中回流,得到芴与2-硝基苯的C—C偶联化合物;第二步Cadogan环化反应,三苯基膦还原2-（2-硝基苯）-9,9-二甲基芴得咔唑。这-设计重点在于合成咔唑的同时成功地引入了芴核,新合成的化合物通过共用苯环而包含了咔唑和芴。尽管用Cadogan反应还原2-（2-硝基苯）-9,9-二甲基芴时有两种关环可能,但该方法仍然简单有效,易于控制。副产品包括三苯基氧化膦和咔唑异构体12,12-二甲基-11,12-二氢茚[2,1-al咔唑非常容易通过柱层析除去。     

N~3,N~6-二(9,9-二甲基芴-2-基)-N~3,N~6-二(9-苯基咔唑-3-基)-9-苯基咔唑-3,6-二胺的合成

以3,6-二溴-9-苯基咔唑和N-(9,9-二甲基芴-2-基)-9-苯基咔唑-3-胺为原料,经Buchwald-Hartwig偶联反应,合成了一种含芴咔唑类空穴传输材料N~3,N~6-二(9,9-二甲基芴-2-基)-N~3,N~6-二(9-苯基咔唑-3-基)-9-苯基咔唑-3,6-二胺。利用~1H NMR、~(13)C NMR和IR等分析方法对产物结构进行了表征,并通过DSC-TG、UV-Vis和荧光光谱研究了物质的热稳定性和光学性能。     

新型三苯胺类空穴传输材料合成与性能研究

以3-N-联苯基氨基-9-苯基咔唑和2,7-二溴-9.9-二苯基芴为原料,经Buchwald-Hartwig偶联反应,合成了一种含芴咔唑类空穴传输材料N~2,N~7-二(联苯-4-基)-N~2,N~7-二(9-苯基咔唑-3-基)-9,9-二苯基芴-2,7-二胺。利用~1H NMR、IR和元素分析等方法对产物结构进行了表征,并通过DSC-TG、UV-Vis和荧光光谱研究了物质的热稳定性和光学性能。     

2-甲基-7-苯并咪唑基螺二芴的合成及性能研究

以对溴甲苯为原料,通过偶联反应、溴化、格氏反应、脱水成环反应和氧化反应得到2-甲基-7-甲酰基螺二芴,再与邻苯二胺反应得到标题化合物(SPF-MB),原料廉价易得,合成路线简单且产率较高。SPF-MB由于引入了螺二芴的三维刚性结构,具有高的荧光量子产率和好的溶解性。热分解温度T d为204.5℃。在电致发光及离子探针领域具有很好的应用前景。用于电致发光领域,将其作为发光层制备成电致发光器件,可得到色坐标为(0.293,0.307)的白光。用于荧光离子探针具有高的灵敏性,对溶液pH的响应非常迅速,是一种具有宽泛响应范围的pH探针。     

基于不对称螺二芴芳胺类蓝光发光材料的合成与性能研究

螺二芴衍生物作为蓝光发光材料被广泛应用于有机发光半导体（OLED）器件。以螺二芴为母体,在2,7位分别引入具有空穴迁移率高的二苯胺和三苯胺基团,设计合成了不对称的螺二芴芳胺类发光材料7-(4-(二苯胺)苯基)-N,N-二苯-9,9’-螺二芴-2-胺。研究表明,该化合物具有较高的热稳定性,其荧光发射波长为445nm,位于蓝光区域。同时具有高度扭曲的分子结构,有利于抑制分子间相互作用和自聚集,有效抑制非辐射,可应用于构建高效的有机蓝光发光材料。     

一种新型吲哚并咔唑化合物的合成与表征

5-([1,1′-二联苯]-4-基)-5,11-二氢吲哚[3,2-b]咔唑为有机电致发光材料和光电催化材料重要中间体。以3-溴咔唑和4-碘联苯为原料,经过Ullmann反应、Buchwald-Hartwig偶联反应和分子内Heck偶联反应生成目标化合物。通过对催化剂、配体和溶剂等条件的优化,确定合成9-[1,1′-联苯-4-基]-3-溴-9H-咔唑的最佳工艺为:催化剂为氯化亚铜、配体为1,10-菲罗啉、溶剂为N,N-二甲基甲酰胺(DMF);目标化合物提纯的最优条件为6倍体积四氢呋喃。合成的化合物经高效液相色谱仪(HPLC)测试纯度,差示扫描量热仪(DSC)测试熔点,核磁共振(~1HNMR、~(13)CNMR)确定结构。     

一种新型三芳胺衍生物的合成及性能研究

以9,9-二甲基-2-氨基芴为原料,通过Buchwald-hartwig反应,分别与4-溴联苯和3-(4-溴苯基)-N-苯基咔唑进行C-N偶联,合成N-联苯-4-基-9,9-二甲基-N-[4-(9-苯基-9H-咔唑-3-基)苯基]-9H-芴-2-胺。采用红外、核磁对其结构进行表征,通过TG、DSC对其热稳定性进行研究,使用紫外和荧光光谱对其光学性能进行表征。结果表明:该化合物具有较好的热稳定性,发射峰位置在422nm,是一种较好的蓝光材料。     

催化合成咔唑的研究进展

综述了催化合成咔唑的研究进展。介绍了有关负载钯和雷尼镍催化剂在脱氢反应中的理论与实验研究,阐述了以1,2,3,4-四氢咔唑为原料,经催化脱氢反应得到咔唑的具体条件,脱氢的效率与催化剂的用量和种类、溶剂的种类以及反应条件等有关。以廉价原料二苯胺合成咔唑,反应由负载钯或铂催化剂催化;2-氨基联苯可经催化氧化反应或贵金属催化的偶联反应得到合成咔唑,这两条路线是制备咔唑的重要途径。     

两种芴基ICT化合物的合成及光谱研究

咔唑经烷基化、酰化处理后与2-氨基芴、2,7-二氨基芴进行缩合反应,得到了两种ICT化合物9-乙基咔唑-3-亚甲基-芴-2-胺(简称ECzFA)和双(N-乙基咔唑-3-基)甲醛缩2,7-二氨基芴(简称BECzFA)。采用IR、1H NMR对其结构进行了表征,并对其荧光性质进行了初步研究。结果表明,这两种化合物均具有优良的电荷转移效果,且在溶剂中呈淡蓝色荧光(Em1max1=352 nm,Em2max1=367 nm)。这两种化合物有望在光电子集成、荧光探针和双光子吸收材料等领域得到应用。     

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.