白藜芦醇分子的转动惯量和电偶极矩

通过分子轨道理论和杂化轨道理论推断出较稳定的白藜芦醇分子是平面型分子,然后根据白藜芦醇分子结构特点计算了该化合物的一种稳定异构体的转动惯量,用矢量合成法计算了其电偶极矩,为微波辅助白藜芦醇萃取理论研究提供转动惯量和电偶极矩的数据.     

A New Method to Investigate the Clustering Phenomena in Supercritical Fluids

EstimationoflocaldensityofsolventaboutthesoluteSolvatochromicbehaviorsofspectroscopicprobesarewidelyusedtoestimatethesol-ventstrengthofsupercriticalfluids(SCF,).i-3lnthiswork,thesolvatochrondcshiftofthen-n*transitionbandforacetone(O.o37mo1.L-')insupercrihcal(SC)CO2wasde-terminedbyUVspectroscopytostUdythesolvationeffect.TheMcRae-BaylissexpressionbasedonthedielectriccontinUUInmodelgivestherelahonshipbetWeenso1vatochromicshiftandpo1arizabilityofnonPolarsolvents4-5asfollows:wherevisthewave…     

Studies on Colloidal Properties of Mixed Metal Hydroxide－Clay Aqueous Suspension

ＳｔｕｄｉｅｓｏｎＣｏｌｌｏｉｄａｌＰｒｏｐｅｒｔｉｅｓｏｆＭｉｘｅｄＭｅｔａｌＨｙｄｒｏｘｉｄｅ－ＣｌａｙＡｑｕｅｏｕｓＳｕｓｐｅｎｓｉｏｎＮＯＵｗａｎ－ｇｕｏ；ＺＨＡＮＧＣｈｕｎ－ｇｕａｎｇ；ＳＵＮＤｅ－ｊｕｎ；ＨＡＮＳｈｕ－ｈｕａａｎｄＷＡＮＧ...     

THE ESTABLISHMENT OF TWO SETS OF ALIEN ADDITION LINES OF WHEATWHEATGRASS

The procedure and method for the transfer of two sets of 14 pairs of wheatgrass (Agropyron interrnedium) chromosomes into common wheat to establish two sets of wheat-wheatgrass alien addition lines are reported. Meanwhile, observations and analyses have been made on the phenotypicaI characters of all the 14 alien addition lines established. It is determined that wheatgrass chromosomes in some of the established addition lines carry the rustresistant genes. In addition, questions concerning the location and distribution of certain agriculturally important genes of wheatgrass chromosomes have been discussed.     

SPME/GC-MS测定水中芥子砜

日本遗弃在华化学武器中的化学战剂芥子气和芥子亚砜氧化均生成芥子砜,芥子砜有糜烂性[1],所以建立灵敏、快速的监测环境样品中芥子砜的分析方法具有重要意义.本文采用固相微萃取法(SPME)[2]/气相色谱-质谱(GC-MS)监测技术,对水中痕量芥子砜进行了测定,结果表明,本法完全满足水中芥子砜的监测要求.     

反应挤出法合成S/B多嵌段共聚物的研究

在阴离子引发体系下 ,以双螺杆挤出机为反应器 ,采用丁二烯、苯乙烯混和单体加料方式 ,本体法一步合成了S B多嵌段共聚物 .考察了螺杆转速、进料速率以及不同丁苯配比对反应挤出合成PS及S B嵌段共聚物聚合转化率的影响 .用1 H NMR、IR、DMA、TEM等方法对S B嵌段共聚物进行了表征 ,结果表明共聚物由多个微小的丁二烯嵌段和少量无规段组成 .当丁二烯含量少至 15 %左右时 ,其嵌段可回缩成球状 ,粒径大约在 30～ 5 0nm .该材料的韧性随着共聚物中丁二烯含量的增加而逐渐提高 ,特别是断裂延伸率的提高尤为显著     

聚环氧氯丙烷聚氨酯／聚（甲基丙烯酸甲酯－苯乙烯）IPN的研究

改变聚（甲基丙烯酸甲酯－苯乙烯）（Ｐ（ＭＭＡ－ｃｏ－Ｓｔ）中甲基丙烯酸甲酯的含量（Ｗ_（ＭＭＡ）），通过一步法合成出聚环氧氯丙烷聚氨酯（ＰＵ（ＰＥＣＨ）／Ｐ（ＭＭＡ－ｃｏ－Ｓｔ）ＩＰＮ．ＤＳＣ、ＴＥＭ和动态粘弹谱研究结果表明：当Ｐ（ＭＭＡ－ｃｏ－Ｓｔ）中Ｗ_（ＭＭＡ）大于０．６时，ＩＰＮ仅有一个Ｔｇ；当Ｗ_（ＭＭＡ）小于０．４时，ＩＰＮ有２个Ｔ_ｇ，ＴＥＭ上出现相区，Ｐ（ＭＭＡ－ｃｏ－Ｓｔ）溶度参数（δ）及δ的氢键作用分量（δｈ）与相态、力学性能有密切关系。     

二维配位聚合物[Zn(PDC)(phen)]n的合成、晶体结构及荧光性质

合成了锌(II)与3,4-吡啶二羧酸和1,10-邻菲啰啉形成的配位聚合物[Zn(PDC)(phen)]_n (1) (H₂PDC＝3,4-吡啶二羧酸, phen＝1,10-邻菲啰啉), 对其进行了元素分析、红外光谱和X射线单晶衍射表征, 测定了晶体结构. 该聚合物属单斜晶系, P2(1)/n空间群, a＝0.77136 nm, b＝1.9757(4) nm, c＝1.0680(2) nm, β＝95.36(3)°, V＝1.6205(6) nm³, Z＝4, D_c＝1.683 Mg/m³, M_r＝410.68, F(000)＝832, μ＝1.55 mm^－1, 最终偏离因子R₁＝0.0608, wR₂＝0.0967. 该化合物中Zn原子与来自两个PDC的三个羧基氧原子, 另外一个PDC的吡啶氮原子, 以及phen的两个氮原子配位, 形成的ZnN₃O₃八面体通过PDC桥联形成二维层状网络结构. 此外还研究了该聚合物的热性质和荧光性质.     

新型稀土杂多蓝的合成及其抗艾滋病病毒(HIV-1)活性和毒性研究

合成Keggin结构钨硅、钨锗、钨磷、钨坤两电子及四电子稀土钐盐杂多蓝，铈量滴定及元素分析方法确定了化合物的还原电子数及化学组成，采用IR，UV－Vis,^183W NMR和ESR等对其结果进行了表征，在人T淋巴MT－4内，对合成的化合物进行了系统的抗艾滋病毒（HIV－1）活性及毒性测定，发现Keggin结构钨硅、钨锗四电子稀土钐盐杂多蓝具有较强的抗HIV－1活性，其中钨锗酸钐四电子杂多蓝（代号HPBR－2）具有较高的治疗指数。     

STUDIES ON CHARGE TRANSFER POLYMERIZATION——POLYMERIZATION OF ACRYLONITRILE INITIATED WITH PHENYL HYDRAZINE AND ITS DERIVATIVES

The photopolymerization of acrylonitrile (AN) initiated with phenyl hydrazine (PHZ) and its derivatives has been studied. The initiator exponent and monomer exponent were determined from the kinetic investigation to be 0.66th and 2.1th respectively and the overall activation energy was 33.4KJ/mol for the PHZ-AN system. Spectral analysis and other data indicate that a charge transfer complex between PHZ as a donor and AN as an aceeptor is formed. The initiation mechanism was proposed.