简介：PolymerPhysicsLaboratory,InstituteofChemistry,TheChineseAcademyofSciences,Beijing100080,China

简介：Aseriesofliquidcrystallinepolymerswithtwo-dimensionalmesogenicunitsweresynthesizedbysolutionpolycondensationatlowtemperature.Allthepolymerswereliquidcrystalline.ThemeltingtemperatureT_m(exceptthatwithsubstituentofmethoxy)andtheclearingtemperatureT_iofthepolymerschangeregularlywithvaryingofthelengthofthealkylsubstituentgroups.

简介：双人脚踏车催化系统，由乙烯二度(indenyl)组成有二不同cocatalysts，alkylaluminum(diethylaluminium氯化物或trialkylaluminum)和methylaluminoxane的锆二氯化物，在作为唯一从乙烯准备分叉的聚乙烯被采用单体。催化系统racet(Ind)2ZrCl2/AlEt2Cl/MAO展出了高加入(29.0/1000C)。oligomerization和copolymerization反应在双人脚踏车调节催化系统，以及不同cocatalysts，在催化活动和获得的聚合物的性质有效果例如融化温度，crystallinity，分子的重量和分子的重量分发。而且，oligomerization反应条件是在改变聚乙烯的性质和结构的主要因素。

简介：Inthispaper,twokindsofPS-PTCsweresynthesizedusingdifferentmethodsbyintroducingcinchonineandquininetothepolymersupport.TheircatalyticpropertiesforthealkylationofN-diphenylmethyleneglycinet-butylesterwerealsocompared.

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简介：由与链纠纷的不同的度准备同质的混合样品，我们报导链纠纷的异常贡献分阶段执行分离温度和介绍典型更低的批评答案温度LCST行为的polymethylmethacrylate/polystyrene-co-maleic酐PMMA/SMA混合的率。有更高的链纠纷密度的meltmixedPMMA/SMA混合介绍更低的云点Tc和更短的延期时间，而是更低的阶段分离比答案演员组在给定的温度评价，为聚合物建议那与不同压缩状态相配结构，热力学地，分阶段执行分离的更多的容易降低Tc未必等价于更快的动力学分解率。试验性的结果显示更低的T融化混合样品的c被归功于到更小的集中变化波长m由更高的纠纷度导致了，当在融化混合样品的更高的纠纷度导致限制部分动力学时并且因而，更慢的动力学分解率由macromolecular散开统治了在一可比较熄灭深度。这些结果表明在聚合物混合收拾行李的链能显著地影响液体液体阶段分离行为，它是从小分子的混合物的分解的重要差别。

简介：Two-dimensional(2D)materialshavebeendemonstratedtoexhibituniquepropertiesoriginatingfromits2Dnature.Inrecentyears,theconstructionof2Dmaterialshasbecomeatopicofgreatinterest.Thisarticlesummarizestherecentadvanceof2Dsupramolecularorganicframeworks(SOFs)whicharehomogeneouslyconstructedinsolutionphasethroughself-assemblyofrationallydesignedbuildingblocks.These2DSOFsaresolubleandstillmaintainstablenetworkstructuresinsolutions,whichexhibituniquenessnotonlyinstructuresbutalsoinproperties.Inthisconcisereview,theSOFs-relatedbackgroundisbrieflyintroducedfirstly,followedbyoutliningtheresearchprogressofsoluble2DSOFsfromtheperspectiveofmonomerdesign,assembly,andstructuralcharacterization.Thearticleendswithapersonaloutlookonthefuturedevelopmentofthisnewclassofsupramolecularpolymers.

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