简介：Poroussiliconsamplesarepreparedbypulseelectrochemical-etchingandDCelectrochemical-etching.Theeffectsofdifferentpreparationmethodsonluminescentcharacterizationofporoussiliconareinvestigated.ComparedwithDCelectrochemical-etching,pulseelectrochemical-etchingproducestheporoussiliconcharacterizedbyamoreevensurface,astrongerluminescenceandaPLblueshifttoacertaindegree.

简介：Anewmethodofpreparationofirradiativematerialbyusingrareearthasluminophorandinorganicpowderasbasenucleuswaspresented.Rareearthwasusedtomakecolloid,whichwasmixedwithbasenucleussolution,wheredeposition/attachmentreactiontookplaceandrareearthwasadheredontothesurfaceofbasenucleus,henceyieldinganewrareearthencapsulatedirradiativematerial.Fluorescentspectrumanalysisshowsthatthismaterialpossessestwoemissionpeaks,onewithin400～500nmandtheotherwithin580～700nm,reflectingtheluminouscharacteristicsoforiginalrareearthmaterial.

简介：基于费用注射和再结合过程和thetriplet三位字节歼灭过程，计算电镀物品的一个模型光(EL)效率被介绍。注入系数，再结合效率和电镀物品上的应用电场的影响光效率被讨论。它被发现那：当再结合效率与应用电场正在减少增加时，注入系数正在增加的CD。(2)EL效率慢慢地在低电场被提高，但是随应用电压的增加在高电场正在减少。(3)EL效率随主人客人的增加正在减少分子的距离(R)。那么，这被结束在单个层的器官的电镀物品的ELefficiency发磷光的设备被注入系数在更高的电场在更低的电场和再结合效率统治。

简介：UV-visandluminescencespectroscopictitrationexperimentsshowthatanovelRu(Ⅱ）complexexhibitsoff-on-offpHluminescentswitchingwithamaximumon-offrationofabout100.

简介：AGaP/morinnanocompositematerialwasprepared,andthekeyfactorsaffectingtheluminescentpropertiesofthematerialwereinvestigated.IntenseluminescencewasobservedafterthecompositereactionbetweenGaPnanocrystalsandmorin.TheluminescenceoftheGaP/morincompositematerialisintensifiedremarkablywiththeratioofmorintoGaPnanocrystalsincreasing,butthepeakwavelengthremainsunchanged.WiththesizeofGaPparticlesdecreasing,theluminescentintensityofthecompositeincreasesandthepeakwavelengthblue-shifts.Thepossiblereasonforthisphenomenonwasdiscussed.

简介：Akindofsulphide,CaS:Eu2+,activatedbyeuropiumionforwhiteLEDlightingwassynthesizedviasolid-statereactionrouteinreducingatmospheres.Thephosphorswerethenencapsulatedwithsiliconeresin.Moreover,chemicalstructureofthephosphorswascharacterizedbyXRD.MicrostructureofthepowderswasobservedbySEM.Spectraofexcitationandemissionforthephosphorswerealsoobtainedbyaspectrophotometer.Effectofprocessingparametersontheluminescentpropertiesofthepowderswassystematicallystudiedtoresultinthephosphorswithgoodchemicalstabilityandmaximalrelativeluminescentintensity.

简介：Akindofluminousbacterialsensorsthatcanquicklydetecttheacutetoxicityofenvironmentalpollutantsweredeveloped.Themethodisbasedonthedetectionofthecellularlightofbrightluminousbacillusbymeansoffixingcellssoastodetectacutetoxicityofluminousbacillus.Thebacterialsensoriscomposedofimmobilizedfilmofphotobacteriumphosphoreum.Thesebacterialfilmsaresensitivetodetectingthetoxicoids,whicharedifficultorevenimpossibletobemeasuredbytraditionalanalyticalchemistrymethods.Thefilmsshouldbestoredat4℃andthestabilityofthesensorsexceeds1monthwithnomeasurabledeteriorationofthesignal.TheseresultsdemonstratethattheimmobilizedfilmofP.phosphreumcanbeusedtodeveloptheon-lineenvironmentalcontaminationmonitor.

简介：Rareearthluminescentmaterialisoneofthemostimportantapplicationsectorsofrareearths.Chinaenjoystheexceptionaladvantagetodeveloprareearthluminescentmaterialforitsabundantrareearthresources.Afterseveraldecades'endeavor,China'srareearthluminescentmaterialindustry,headedbyrareearthphosphorforlampandLEDandhighefficientrareearthenergy-savinglightsource,hasbeengraduallydevelopedintoascaleindustry.Chinahasbecomeamajorproductionbaseofrareearthphosphorforlampsandrareearth

简介：AbstractLuminescence (mostly fluorescence and phosphorescence) probes are a powerful tool widely used in the life sciences research. They can be used, for example, in the quantitative analysis of physiological parameters, visualization of different cell organelles, and measurement of drug transportation. The luminescence intensity and lifetime of these probes are among the main signals recorded and evaluated in these applications. Other reviews have discussed optical probes from the perspective of their luminescence intensity. However, the luminescence lifetime, which depends on the molecular microenvironment but not the probe concentration, is another promising metric for biological sensing and imaging applications. In this review, we aim to introduce the basic strategies of FLIM probe design. We also present applications of these probes, including sensing of intracellular pH, cation/anion concentrations, oxygen levels, biomolecule contents, and physiological parameters, as well as live-cell imaging based on luminescence lifetime. Studies based on FLIM imaging of cells or tissues with endogenous organic molecules are not included in this mini review. With the rapid development of microscopy technology for fluorescence lifetime imaging, fluorescence lifetime-based probes have shown great potential in a variety of biological applications.

简介：二高度光的铕(III)和铽(III)的准备有succinimide(SI)和N-hydroxysuccinimide(NHSI)的建筑群被报导，它进一步通过元素的化学分析，热分析，英尺红外，粉末X光检查衍射，SEM和荧光光谱学被调查。通过这些分析收集的数据揭示了Eu(III)的形成，有上面的Tb(III)建筑群对ligand在金属提及ligands(M:L)1:3的臼齿的比率。光中心从photoluminescent系列调查被保留的关于通过lanthanide的协作地点的有效促进感受性的有趣的结论。当时，强壮的光排放在Eu(III)-SI和Tb(III)-NHSI建筑群的情况下被观察-SI建筑群展出了的相应Eu(III)-NHSI和Tb(III)没有相片光性质。最新获得的光lanthanide建筑群可能具有为在光电子的各种各样的应用的特别兴趣。

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简介：有表面结果的supercooled水微滴的碰撞一个目标在表面上创造冰生长。在任何冷环境的糖衣问题在预防和预言技术上在飞机，和很多研究上导致严重损坏因为糖衣到目前为止被进行了。因此，知道冻结supercooled水微滴的机制改进反的详细是很重要的--并且除冰的设备和糖衣模拟代码。影响目标表面的单个supercooled水微滴的糖衣机制将为目的给我们大卓见。在现在的学习，我们开发一种双光的成像技术测量在不同温度条件下面影响表面的supercooled水微滴的解决时间的温度。我们使用这种技术测量水微滴的准确温度，并且讨论结冰过程的详细。

简介：ThefluorescenceemissionandX-raydiffractionofmagenesium8-hydroxyquinolinecomplex(Mgq2)havebeenmeasuredathighpressureupto14GPa.Ithasbeenfoundthatpressurecaninfluencetheemissiondramatically.Atrelativelowerpressure(lessthan2.5GPa)thefluorescenceofMgq2changesslightly,buttheemissiondropsquicklywithincreaseofthepressurewhenthepressuregetshigherthan2.5GPa.TheresultsofinsituenergydispersiveX-raydiffractionathighpressurewithsynchrotronradiationindicatethatthereisaphasetransitionatabout2.5-3GPaforMgq2crystal.2001ElsevierScienceB.V.Allrightsreserved.

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简介：描述表面在nanocrystals熄灭孤立的离子中心的一个模型基于在做的离子和熄灭中心的nanocrystalline表面之间的精力转移被建议。熄灭的率在nanocrystal取决于离子的位置，在非选择的刺激下面的因此腐烂曲线通常是非指数的。与这个模型一起计算的腐烂曲线在对T-4(1)的好同意>(6)在ZnS的A(1)排放:Mn2+nanocrystals。

简介：DevelopingecologicallightingsourceTheworldisfacingthebigproblemofenergyshortagetodayandthecontradictionbetweeneconomydevelopmentandenvironmentalprotectionisworsened.Therefore,peoplearemorelikelytochooseanecologicallightsourcethatismoreenergyefficientandenvironmentalfriendly.ThechoiceprovidesgreatopportunityforthedevelopmentofrareearthopticalmaterialindustryinChina.Theconceptofgreenlightingpositionsrareearthluminescentmaterialasaleadingplayerinilluminationmarket.ThelightsourceofbothrareearthluminescentlampandLEDlampisecologicalandenergysaving.Thisiswhy

简介：单斜晶、六角形的LaPO4:5mol.%Eu3+黄磷与仅仅在一样的合成温度由一个热水的方法调整答案的pH价值被综合。被不同准备影响的Eu3+-dopedLaPO4,的微观结构，形态学和光致发光调节，被X光检查衍射(XRD)描绘，扫描电子显微镜学(SEM)，Fourier变换红外线的光谱学(英尺红外)，拉曼光谱学和光光谱学分别地。然而，标本在强壮的酸答案显示出单斜晶的结构它在弱酸答案和强壮的碱答案变成了六角形的结构。单斜晶的LaPO4:Eu3+显示出最长的长度到直径比率，它被归因于优先的生长[-112]。单斜晶的标本与六角形的标本相比在红外线的系列，拉曼乐队位置和费用转移(CT)展出了细微红移动。而且，谷物尺寸的计算结果，格子参数，在在拉曼模式和排放积分紧张的半最大值的完整的宽度在对分析结果的好同意。单斜晶的标本显示出最大的绝对的光量收益(0.4)和第二一生2(0.52ms)，它与在CIE的红橘子的排放是一致的。5D07F1在六角形的标本占据了一个dominate位置，它显示在六角形的结构的更多的Eu3+被占据对称地点的倒置中心。

简介：BondedtypeRE3+dopedluminescentco-polymerwassynthesizedbysolutionfreeradicalcopolymerization.Theinfluenceofchargesequence,monomersandco-polymerizedmethodonpropertiesandstructuresoftheco-polymerswasstudied.Theemissionintensityoftheco-polymersatdifferentRE3+concentrationswastested.Theresultsshowedthattheco-polymersofEu-PStandEu-PMMAbothhadwideabsorptionpeakat200-400nmandthestrongestpeakappearedat235nm.ThefluorescentintensityofEu3+dopedpolystyreneco-polymerwasstrongerthanthatofEu3+dopedPMMAcopolymer.Thecharacteristicemissionofeuropiumionswasobservedintheco-polymers.Thecopolymerdopedwithrareearthelementsshowedthe"sensitizationeffect"forthecentralions.Thebonded-typerareearthcopolymernotonlyenhancedtheenergytransferefficiency,butalsoimprovedthefluorescenceintensitybyiacreasmgtherigidityofmainandsidechain.

简介：Trivalentsamariumdopedbariummolybdate（BaMoO_4：Sm~（3＋））redphosphorwassuccessfullysynthesizedbyhydrothermalmethod.Thecrystalstructure,morphologyandphotoluminescentpropertywerecharacterizedbyX-raydiffraction,fieldenvironmentalscanningelectronmicroscopyandphotoluminescencespectroscopy.TheresultsindicatedthatthesynthesizedBaMoO_4：Sm~（3＋）phosphorconsistedofapurephasewithanoctahedralstructure.Themainexcitationpeakswerelocatedat362,404,445and477nm,respectively,andwereobviouslyobserved.Themainemissionpeakswerelocatedat533,566,602and646nm,respectively.Thephosphorsexhibitedaredperformanceat646nm,whichwasappropriatefortheultraviolet-lightemittingdiode（UV-LED）andblueLED.TheluminescentintensityofBaMoO_4：Sm~（3＋）increasedwithanincreaseinthedopingamountofSm~（3＋）.Theluminescentintensityhadtheoptimalvalueforx=0.03.WhenthedopingamountofSm~（3＋）wasfurtherincreased,theconcentrationquenchingphenomenonwasobserved.Monovalentlithium（Li＋）cationwasusedasachargecompensator.TheluminescenceintensityfirstincreasedwithincreasingLi＋dopingconcentration,andthendecreased.TheoptimalcontentofLi＋wasabout2%.TheBaMoO_4：Sm~（3＋）phosphorpreparedinthisstudycouldactassuperiorredphosphorforwhiteLEDs.

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