简介：Fivenovelnear-infraredelectrochromicaromaticpolyimides(PIs)withpendentbenzimidazolegroupweresynthesizedfrom4,4’-diamino-4’’-(1-benzylbenzimidazol-2-yl)triphenylamine(namedasDBBT)withfivedifferentdianhydridesviatwo-steppolymerizationprocess,respectively.ThemaximumUV-VisabsorptionbandsofthesePIslocateatabout335nmforsolidfilmsduetotheπ-π*transitions.Areversiblepairofdistinctredoxpeaks,thatwereassociatedwithanoticeablecolorchangefromoriginalyellowtoblue,wasobservedinthecyclicvoltammetry(CV)test.Anewabsorptionpeakemergedat847nminnear-infrared(NIR)regionwithincreasingvoltageinUV-Vis-NIRspectrum,whichindicatesthatPIcanbeusedasNIRelectrochromicmaterial.ThesenovelPIshavegoodelectrochemicalstability,appropriateenergylevelsforthehighestoccupiedmolecularorbital(HOMO)andthelowestunoccupiedmolecularorbital(LUMO),intherangeof-5.17eVto-5.20eVand-2.14eVto-2.26eV(versusthevacuumlevel)determinedbycyclicvoltammetrymethod.Thesevaluesbasicallyconsistedwiththeresultsofquantumchemicalcalculation.Thesepolyimidescanbeusedasnovelelectrochromicandholetransportationmaterials.

简介：Thereactionof2-alkyl-l,3-dimethylbenzimidazolinmsaltswithGrignardreagentsgaveadditionproductswhichwerehy-drelyzedtogiveketones.Anewmethodforthepreparationofcyclohexylketonesandisopropylketonesisprovided.

简介：无

简介：Aseriesofnovel(S,S)-2,8-diazabicyclo[4.3.0]nonanecontainingbenzimidazolemoietywassynthesizedandtheirstructuresweredeterminedby1HNMRandHRMS.ThebiologicalactivityresultsshowedthatthesecompoundspossessedmoderateantifungalactivitytosomeplantpathogenousfungiandmoderateinsecticidalactivityagainstMythimnaseparataWalkerandCulexpipienspallens.Compounds6eand6fexhibitedgoodantibacterialactivityagainstSclerotiniasclerotiorum,PhytophthorainfestansandFusariumgraminearum.Thelethalityratesofcompounds6eand6kagainstMythimnaseparataWalkerwere100%at200mg/Landthelethalityratesofcompounds6hand6kagainstC.pippienspallenswere75%at2mg/L.

简介：当他们被介绍进主要的链时，热imidizaiton上的benzimidazole单位的效果被学习poly(amic酸)(泛美航空公司)。PAA-PABZ的热imidization过程由3,3,4,4-biphenyltetracarboxylicdianhydride(BPDA)综合了，2-(4-aminophenyl)-5(6)-aminobenzimidazole(PABZ)被TGA学习，DSC，直接存储器存取，FTIR并且在situFTIR。FTIR并且在situFTIR的结果显示单位充当的benzimidazole一在里面当温度比170低时，加速泛美航空公司的热imidization到polyimide(PI)的situ催化剂?????????????????????????ㄠ?????獩瑯捡楴?????偩???h

简介：在现在的调查，小说poly(amid-imide)包含benzoxazole和benzimidazole的/zinc氧化物nanocomposites(PAI/ZnONC)有修改的锌氧化物nanoparticles(ZnONP)的不同数量的悬挂的组成功地经由前situ方法被准备。(amid-imide)(白族)被2-的直接polycondensationPoly准备[3,5-二度(N-trimellitimidoyl)苯基]有5-(2-benzimidazole)的benzoxazole(DCA)-1,3-phenylenediamine(DAMI)并且向聚合矩阵提供了设计得好的组。ZnONP的表面是有联合代理人有更好的分散并且与聚合物矩阵的功能的组一起提高NP的可能的相互作用的3-aminopropyltriethoxysilane(APS)的functionalized。APS的数量结合了到ZnO表面被thermogravimetric分析决定。PAI/ZnOnanocomposites被Fourier变换描绘红外线的光谱学(FTIR)，X光检查衍射(XRD)，和扫描电子显微镜学(SEM)。SEM分析证明修改ZnOnanoparticles同类地在聚合物矩阵被驱散。另外，TGA数据与整洁的聚合物相比显示了nanocomposite的热稳定性的改进。