简介:由包含微生物引起的整个房间的催化剂的RhodococcuserythropolisAJ270,nitrilehydratase和amidase催化,在10点
简介:1,2-Diarylacetylenes被与乙酰氯化物和结果的ethene氯化物的消除由diaryl酉同类的增加组成的一个灵巧的方法综合了。在1,2-diarylacetylene的物理性质和结构之间的关联被微分扫描学习了热量计(DSC),折射媒体和电镀物品光的参数测试仪器。结果证明birefringence与把cyclohexyl插入到骨骼,而是mesophase范围被增加,融化并且变清点与在分子,和birefringence介绍乙烯桥被减少,粘性,空地点和mesophase变化都能与perfluoroalkyl/alkoxyl终端被减少而不是alkyl/alkoxyl一半。
简介:Thecrystalstructureoftetrakis[(pyrrol-1-yl)methyl]methanewasdeterminedbyX-raydiffractionmeasurement,andtheresultshowsthatitbelongstomonocliniccrystalsystem,spacegroupisP21/n,witha=0.9284(3)nm,b=1.0950(6)nm,c=1.8749(8)nm;α=γ=90.00(4)°,β=103.63(3)°,V=1.8523(14)nm3,Z=4,ρcalcd.=1.192kg/m3,μ=0.072nm-1,F(000)=712,R1=0.0854,wR2=0.1884.Ithasbeenfoundthatthemoleculesexistintwoenantiomericstates.Enantioselectiveself-assembliessuchasone-dimensionalmolecularstacksinasinglehandedness,homochiralmonolayersandachiralsuperlatticearespecifiedinthisracemiccrystal.Inaddition,asimpletechniqueisadvocatedtodistinguishchiralstatesfromtetrahedralmoleculesinthesolidstate.ThepresentR/Snomenclatureofthetetracooradinatedcarboncentersisusedsolelyforitsconveniencetodistinguishthetwoenantiomericstates,butnotusedtodeterminetheabsoluteconfigurations.
简介:CASnanoparticleswereassembledonthesmoothsurfaceofapieceofsilverbyusing1,4-benzenedithiolascouplingmolecules.TheSEMandresonanceRamanspectroscopiccharacterizationsdemonstratethatthenanosizedstructureofCdSwasstillpreserveduponassembly,andatwo-dimensionalstructureofCdSnanoparticleswasformedonthesubstratesurface.TheFT-Ramanspectraindicatethat1,4-benzenedithiolwascoupledbetweenCASnanoparticlesandthesilversurfacewithatiltedorientation.TheRamanscatteringof1,4-benzenedithiolwassubstantiallyenhancedbytheassembledCdSnanoparticles,probablyduetothealterationofthepolarizabilityof1,4-benzenedithiolandtheelectromagneticinteractionbetweenthedipolesoftheCdSparticlewithitsimageinthemetalsubstrate.
简介:STUDYONTHEREARRANGEMENTREACTIONOF5-AMINO-1-AMINOCARBONYL-1,2,ANDITSANALOGUES¥RongJianLU;HuaZhengYANG;BaoYingQIAN;HaiYanDENG(N...
简介:Twocalix[4]arenederivativescontaining1,2,3-triazolemoietyweresynthesizedviaK2CO3-catalyzed1,3-dipolarcycloadditionreactionbetweencalix[4]arene-basedazideandactivemethylenecompoundsingoodyields.Thestructuresofthetwocompoundssynthesizedhereinwerefullyconfirmedby1HNMR,,13CNMR,andMS(ESI).Thethermalanalysisshowedthatthemasslossesofthesynthesizedcompounds4and5containing1,2,3-triazolegroupsaresimilartoeachother.
简介:dodecyl1-pyrenylmethyl醚的聚集行为被荧光技术在dioxane水混合溶剂学习。标记的pyrenyl组在在聚集过程期间监视它的环境的极性变化是有效的。在探查环境的极性上基于象链长度效果,自我卷的效果,和分支组效果那样的结构的效果,总数的结构特征被讨论并且被用来在三cholesteryl酉旨和三长链链烷形成的总数上解释结构的特征的效果。
简介:Anovelβ-cyclodextrin(β-CD)derivativebearingdiethanolaminemoietywassynthesizedbyaconvenientmethodwith63%yield,andthenewhostcompoundwascharacterizedby(13)~C-NMR,FT-IRspectraetc,
简介:SYNTHESISOF3-ARYL-1(2H,4H)ACRIDONESANDTHEIRDERIVATIVES¥RongYIN;GuangFanHAN;YuTianLI(DepartmentofMedicalLaboratory,JilinMediea...
简介:1IntroductionFullerenehasreceivedconsiderableattentionandagreatresearchinginterestduetoitsuniquestructureandinterestingproperties[1-3].Manyfunctionalgroupshavebeenintroduced,oftenregion-orstereo-selectively,fortuningthephysicalpropertiesofC60andforconstructingsupramoleculararchitectures[4-6].AmongallkindsofC60derivatives,thediseoticmolecule-substitutedC60derivativesshowinterestingproperties,especially,liquidcrystalproperties.Uptonow,fewC60derivativeswithdiscotic-moleculargroupsandtheirliquidcrystalpropertieshavebeenstudied.In1996,Deschenauxetal.[7]reportedthefirstmesomorphicC60-ferrocenederivative.Tianetal.[8]synthesizedaC60-perylenederivativein2004.Nakanishietal.[9]preparedaseriesofuncommonliquidC60derivativeswith2,4,6-tris(alkyloxy)benzalgroupsin2006.Lately,Geertsetal.[10]describedthesynthesisofmesogenicphthalocyanine-C60.