4-甲基水杨酸铜(Ⅱ)配合物的合成与表征

采用溶剂热法合成了一个配合物[Cu(4-Me-SA)(Phen)]·2H2O(Phen=1,10-邻菲啰啉,4-Me-SA=4-甲基水杨酸),用X射线单晶衍射仪测定了该化合物的晶体结构,通过元素分析(EA),红外光谱(FTIR),紫外-可见光谱(UV-Vis),热分析(DSC-TGA)和荧光光谱(FS)对其结构和性质进行了分析与表征。结果表明:晶体属于单斜晶系,P2(1)/c空间群,晶胞参数a=0.8324(3)nm,b=1.2644(5)nm,c=1.7493(7)nm,α=90.00°,β=100.404(7)°,γ=90.00°,V=1 810.8(12)nm3,Z=4。配位原子分别来自于1个4-甲基水杨酸配体的2个氧原子和1个邻菲啰啉配体的2个氮原子,形成配位数为4的稳定结构。配合物中的氢键和π-π堆积作用使其自组装成1个稳定的三维立体结构。发光性能测试表明,该配合物具有荧光性质。     

钐(Ⅲ)-1H-苯并三唑-1-乙酸-1,10-邻菲啰啉配合物的水热合成、表征及晶体结构

标题配合物[Sm(L)3(Phen)H2O]2(HL=1H-苯并三唑-1-乙酸;Phen=1,10-邻菲啰啉)是由SmCl3.6H2O、1H-苯并三唑-1-乙酸和1,10-邻菲啰啉经水热反应得到。采用元素分析、摩尔电导、红外光谱、热分析、X-射线单晶衍射手段对其进行表征。晶体结构表明:晶体属于单斜晶系,空间群为P2(1)/n。晶胞参数为:a=13.887 9(6),b=12.973 4(5),c=21.713 7(9),α=90°,β=100.820(2)°,γ=90°。V=3 842.7(3)3,Z=2,Dc=1.602 Mg.m-3,μ=1.600 mm-1,F(000)=1 860。配合物中每个Sm(Ⅲ)与来自4个配体L的6个氧原子、1个配位水分子的氧原子和1个邻菲啰啉分子中的2个氮原子配位,形成一个9配位的单帽四方反棱柱配位多面体。     

5-硝基苯并三唑-1-乙酸镝与1,10-邻菲啰啉配合物的合成和性质研究

采用溶液合成法,合成了标题化合物,通过元素分析、摩尔电导率、紫外光谱、红外光谱和热分析法确定配合物的组成为Dy(L)3phen.1.5H2O(HL=5-硝基苯并三唑-1-乙酸;phen=1,10-邻菲啰啉)。荧光光谱表明:镝配合物的荧光强度较强,说明配体5-硝基苯并三唑-1-乙酸和1,10-邻菲啰啉是很好的敏化剂。     

二元、三元二苯甲酰甲烷铕配合物的荧光研究

以发光的三价铕离子为中心体，二苯甲酰甲烷（DBM）、邻菲罗啉（Phen)和2，2‘-联吡啶（Dipy）为配体，在无水乙醇溶液中反应，合成了二元铕配合物Eu(DBM)3和三元配合物Eu(Phen）（DBM）3及Eu(Dipy)（DBM)3,经元素分析，确定了其组成。红外光谱及荧光光谱测试表明，配体中氧原子和氮原子均与铕（Ⅲ）离子配位，三元配合物的荧光强度高于二元配合物，三元配合物中含吡啶的配合物Eu(Dipy)(DBM)3荧光强度又高于含邻菲罗啉的配合物Eu(Phen)-(DBM)。     

柠檬酸-邻菲啰啉-稀土三元配合物的合成与表征

在无水乙醇溶液中,以邻菲啰啉(Phen)、柠檬酸(H3Cit)为配体,合成了7种稀土三元固体配合物.通过元素分析、摩尔电导率测定、红外光谱和热重差热分析等手段确定配合物的组成为RE(Cit)·Phen·2H2O(RE=La3+,Pr3+,Nd3+,Sm3+, Eu3+,Tb3+,Dy3+).     

铒-对甲苯磺酰组氨酸-邻菲啰啉三元配合物的合成及其抑菌活性

以对甲苯磺酰组氨酸,邻菲啰啉和氯化饵为原料合成了一种新型稀土三元固体配合物。利用配位滴定,元素分析,紫外光谱(UV),红外光谱(IR),热重分析(TG-DTG)等分析手段对配合物进行了表征,推测其结构为[Er(N-Ts-L-His)3Phen]Cl3·2H2O。通过抑菌实验对配合物及配体的抑菌活性进行了研究,初步结果表明,配合物有较好的抑菌效果,并且明显强于配体的抑菌性质。     

钕(Ⅲ)-氨基酸-邻菲啰啉三元配合物的合成及其抑菌活性

60℃下,在体积比为1∶1的乙醇水溶液中,采用常规溶液法合成了钕(Nd)-氨基酸-邻菲啰啉三元配合物。利用配合滴定、摩尔电导、红外光谱(IR)、热重-差热分析(TG-DTG)、紫外光谱(UV)和荧光光谱(FS)等分析手段对配合物的组成和光学等性质进行了分析与表征,推测系列配合物的化学组成为:[Nd(Amino)3Phen]Cl3.3H2O。通过抑菌实验对配合物的生物活性进行了研究。结果表明,组氨酸的羧基氧原子和邻菲啰啉的氮原子均与Nd3+配位,且配合物对大肠杆菌、枯草芽孢杆菌以及金黄色葡萄球菌有较好的抑菌效果。     

Synthesis and properties of dysprosium complex with 2-(5-nitro-1H-benzo [d] [1,2,3] triazol-l-yl ) acetic acid ligand and 1,10-phenanthroline

采用溶液合成法,合成了标题化合物,通过元素分析、摩尔电导率、紫外光谱、红外光谱和热分析法确定配合物的组成为Dy(L) 3phen·1.5H2O(HL =5-硝基苯并三唑-1-乙酸;phen=1,10-邻菲啰啉).荧光光谱表明:镝配合物的荧光强度较强,说明配体5-硝基苯并三唑-1-乙酸和1,10-邻菲啰啉是很好的敏化剂.     

Cu(Ⅱ)配合物[Cu(fiac)(1,10-phen)]·H_2O的合成、结构及性质研究

以5-氟水杨酸和邻菲罗啉为定向配体,与乙酸铜反应经溶剂热法合成了一个新的单核铜(Ⅱ)配合物[Cu(fiac)(1,10-phen)]·H2O(1)(Hfiac=5-氟水杨酸,1,10-phen=邻菲罗啉),并对结构进行了单晶X-射线衍射表征、元素分析和红外光谱分析。配合物1属于三斜晶系,Pī空间群,晶胞参数a=1.11401(6)nm,b=1.20947(10)nm,c=1.40478(17)nm;α=7.2680(11)°,β=75.090(9)°,γ=76.300(6)°,V=1719.6(3),Z=2,Dc=2.425g·cm-3,R1=0.0411,wR2=0.1108,S=1.110。配合物1中的Cu(Ⅱ)离子分别与来自二齿配体Hfiac上的两个O原子和来自邻菲罗啉配体上的两个N原子配位,形成平面构型。通过对配合物1的荧光性能研究,结果表明其具有一定的荧光特性。     

邻菲啰啉-对苯二甲酸铜（Ⅱ）配合物的合成与表征

合成了邻菲啰啉（Phen）-对苯二甲酸（p-Phtha）铜（Ⅱ）的混配配合物并获得晶体。X-射线单晶衍射、红外光谱分析表明该配合物组成为[Cu（Phen）2（p-Phtha）]·5H2O,晶体属单斜晶系,C2／C空间群,晶胞参数为：α=11．623（7）A,b=32．51（2）A,c=16．341（10）A,β=95．022（9）°,V=6150（7）A^3。Cu（Ⅱ）采取5配位方式,处于一个变形的四方锥配位环境中。     

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.     

Direct observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM

Despite its industrial importance, the subject of freeze-thaw (F/T) stability of latex coatings has not been studied extensively. There is also a lack of fundamental understanding about the process and the mechanisms through which a coating becomes destabilized. High pressure (2100 bar) freezing fixes the state of water-suspended particles of polymer binder and inorganic pigments without the growth of ice crystals during freezing that produce artifacts in direct imaging scanning electron microscopy (SEM) of fracture surfaces of frozen coatings. We show that by incorporating copolymerizable functional monomers, it is possible to achieve F/T stability in polymer latexes and in low-VOC paints, as judged by the microstructures revealed by the cryogenic SEM technique. Particle coalescence as well as pigment segregation in F/T unstable systems are visualized. In order to achieve F/T stability in paints, latex particles must not flocculate and should provide protection to inorganic pigment and extender particles. Because of the unique capabilities of the cryogenic SEM, we are able to separate the effects of freezing and thawing, and study the influence of the rate of freezing and thawing on F/T stability. Destabilization can be caused by either freezing or thawing. A slow freezing process is more detrimental to F/T stability than a fast freezing process; the latter actually preserves suspension stability during freezing. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004 in Chicago, IL. Tied for first place in The John A. Gordon Best Paper Competition.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Bark and Ambrosia Beetles in the Southeastern US

In 2002–2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae) to traps baited with ethanol and/or (−)-α-pinene in the southeastern US. Eight field trials were conducted in mature pine stands in Alabama, Florida, Georgia, North Carolina, and South Carolina. Funnel traps baited with ethanol lures (release rate, about 0.6 g/day at 25–28°C) were attractive to ten species of ambrosia beetles (Ambrosiodmus tachygraphus, Anisandrus sayi, Dryoxylon onoharaensum, Monarthrum mali, Xyleborinus saxesenii, Xyleborus affinis, Xyleborus ferrugineus, Xylosandrus compactus, Xylosandrus crassiusculus, and Xylosandrus germanus) and two species of bark beetles (Cryptocarenus heveae and Hypothenemus sp.). Traps baited with (−)-α-pinene lures (release rate, 2–6 g/day at 25–28°C) were attractive to five bark beetle species (Dendroctonus terebrans, Hylastes porculus, Hylastes salebrosus, Hylastes tenuis, and Ips grandicollis) and one platypodid ambrosia beetle species (Myoplatypus flavicornis). Ethanol enhanced responses of some species (Xyleborus pubescens, H. porculus, H. salebrosus, H. tenuis, and Pityophthorus cariniceps) to traps baited with (−)-α-pinene in some locations. (−)-α-Pinene interrupted the response of some ambrosia beetle species to traps baited with ethanol, but only the response of D. onoharaensum was interrupted consistently at most locations. Of 23 species of ambrosia beetles captured in our field trials, nine were exotic and accounted for 70–97% of total catches of ambrosia beetles. Our results provide support for the continued use of separate traps baited with ethanol alone and ethanol with (−)-α-pinene to detect and monitor common bark and ambrosia beetles from the southeastern region of the US.     

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.     

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.     

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。