简介：Apolymer（poly（9,10-anthracenevinylene-alt-4,4’-（9,9-bis（4-（4’-（1,2,2’-triphenylvinyl）phenoxy）butyl）-9Hfluorene-2,7-diyl）dibenzaldehyde）,P1）wassuccessfullysynthesizedthroughtheWittig-Hornerreactionbyemployingfluoreneand9,10-distyrylanthracenemoietiesasbuildingblocksforbackboneandtetraphenylethenesaspendantgroups.Photophysicalandthermalpropertiesoftheresultingpolymericemitterwerefullycharacterizedbyultraviolet-visible（UVVis）absorptionandphotoluminescence（PL）spectra,thermogravimetricanalysis（TGA）anddifferentialscanningcalorimetry（DSC）.WhileP1emitsanorange-lightcenteredat567nmindilutetetrahydrofuran（THF）solution,thesolidpowderofthepolymerexhibitsstrongyellowemissionpeakedat541nm.Itisalsofoundthattheas-synthesizedpolymershowsuniquepropertyofaggregation-enhancedemission（AEE）.Inaddition,P1possesseshighthermalstabilitywithadecompositiontemperature(Td,5%)of430°Candhighmorphologicalstabilitywithaglasstransitiontemperature（Tg）of171°C.Underthestimulusofmechanicalforce,theemissionofP1canbechangedfromyellowtored(Δλmax=61nm),showingaremarkablemechanochromism.TheresultsfromXRDanalysissuggestthatsuchmechanochromicphenomenonofP1isprobablycausedbythedestructionofcrystallinestructure,whichleadstotheconformationalplanarizationofthedistyrylanthracenemoietiesformingbythepolymerizationandtheincreaseofmolecularconjugationofthebackbone.

简介：在水热条件下,制备了一种基于Keggin型多金属氧酸盐的银配合物[Ag（10）（NCA）4（PW9ⅥW3ⅤO（40））（H2O）4].通过元素分析、红外光谱和X-射线单晶衍射方法确定了该配合物的晶体结构.在合成过程中,3-（2-吡啶羧酸）酰胺-吡嗪配体（L）分解成烟酸NCA.结构分析表明：该化合物属于三斜晶系,P1空间群,晶胞参数a=1.18874（9）nm,b=1.24950nm,c=1.41103（10）nm,α=73.712（2）°,β=66.720（2）°,γ=83.467（2）°,V=1.8479（2）nm3,Z=1,R1=0.0731,ωR2=0.1974.配合物中含有一种六核银亚单元[Ag6（NCA）4]（2＋）,不同亚单元间通过配位水的氧原子连接形成一维双链结构,而一维双链进一步通过Ag—N键连接形成二维层状结构,二维层则通过[PW9ⅥW3ⅤO（40）]（6-）多阴离子形成最终的三维金属有机框架.标题配合物修饰的碳糊电极对H2O2和KNO2还原有好的电催化活性,而且该配合物对降解亚甲基蓝、罗丹明B分子有较高的光催化效率.