简介：ThetitlecomplexEu(Ⅲ)(TTA)3(phen)(whereTTA=thenoyltrifluoroacetonemonoanion;phen=1,10-phenanthroline)hasbeensynthesizedinmixedsolventsofacetoneandethanol(1:1volumeratio)anditscrystalstructurehasbeendeterminedbyX-raydiffraction.Thecomplexcrystalsaretriclinic,spacegroupP1(#2)withcelldimensionsofa=1.3241(2)nm,6=1.5278(4)nm,c=0.9755(3)nm,α=92.49(2)°,β=102.57(2)°,γ=91.62(2)°,V=1.9268(8)nm3,Z=2,μ(MoKα)=18.77cm-1,Dx=1.720g/cm3.ThecoordinationgeometryofEuatomisadistortedsquareantiprism,andtheencapsulatedstructurethatcanmeetthestructuralrequirementofthetypicaleuropiumluminescentsensor.Thefluorescencespectrumsuggeststhatthecomplexisastrongphotoluminescentmaterial.

简介：Europium（Ⅲ）-dopedYF3ispreparedbyahydrothermalprocessat200℃.X-raydiffraction（XRD）patternidentifiestheformationofYF3phasewithoutdetectableimpurity.Environmentscanningelectronmicroscopy（ESEM）imageshowstheevensizedistributionofthesampleswithcubicmorphology.TheexcitationandemissionspectraoftherareearthionsdopedYF3areinvestigatedbyfluorescencespectrophotometer.Theexcitationspectrumfor591nmemissionhasseveralexcitationbandsat320,365,386,397and467nm,andthemainpeakvaluewas397nm.TypicalEu3+emissionpeaksat591nm（5D0→7F1）and612nm（5D0→7F2）areobservedwhenexcitedby397nm,andthestrongestemissionis591nm,demonstratingthattherareearthionsoccupythecentrosymmetricalsitesinYF3.

简介：TwokindsofSt/DVBcopolymerbeedscontaining(1-pyrenyl)formyland(1-pyrenyl)methylgroupsrespectivelyhavebeensynthesizedbybothfunctionalizationandcopolymerization.Thefluorescencespectraoftheswollenpolymerssynthesizedaresimilarinshapetothoseofthecorrespondingmodelcompounds,whiletheintensityratioofexcimertomonomershowscleardependenceonthecontentsofthepyrenegroups.

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简介：ZnS:有到3.2nm的从1.9nm的粒子尺寸的Mn2+nanocrystals(NC)经由化学降水方法被综合与不同[S2]/[Zn2+]比率。为Mn排放的尺寸依赖者腐烂展出双指数的行为。并且在毫秒时间领域，二一生值能两个都与尺寸被弄短增加，它被归因于提高了在主机和Mn2+杂质之间的相互作用。一个分子的结构模型被建议解释二个一生部件的趋势，它被相关到S空缺的数字(对)在Mn2+附近的缺点。

简介：Cholesterolmodifieddextran(CHD)havingself-aggrgationorself-assemblypropertywassynthesizedfromcholesteroland1,6-hexyldiisocyanate.Thedegreeofsubstitutionofcholesterylmoietyindextranmainlineis3-5cholesterolsthe100glucoseunits.WehavepreparedwatersolutionofCHDusingprobetypesonifierandN-Phenyl-a-naphthylamine(PNA)asafluorescentprobetostudyCHDself-aggregateprocess.Foreachsolutionoftwosamples,wefoundthatthemaximumemissionofPNAinCHDconcentration.Thischangecorrespondstotheformationofmicelle-likeclustersself-aggregatedbythecholesterolmoietyoncetheCHDconcentration.Thischangecorrespondstotheformationofmicelle-likeclustersself-aggregatedbythecholesterolmoietyoncetheCHDconcentrationexceeds0.01mg/ml.

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简介：Strongfluorescenceemissionswereobservedfornitrogen,carbonmonoxide,andcarbondioxidemoleculesinintensefemtosecondlaserfields.Theseemissionscanbeassignedtothetransitionsofthemolecularionsfromtheexcitedelectronicstatestothegroundelectronicstates.Theformationmechanismswerediscussedandthelifetimesweremeasuredfortheseexcitedmolecularionsinintenselaserfields.

简介：Heptacyclo[6.6.0.02,6.03,13.04,11.05,9,010,14]tetradecaneisacage-shapedmoleculeofbothhighsymmetry(D2d)andhighrigidity.Inourpreviousreports,ithasbeenusedasanuniquespacergroupforelectrontransferprocessesbetweenadonor(D)andanacceptor(A)substituent.TheDandAchromophorescanbealignedalongastraightline,eithercoplanar(0°dihedralangle)orperpendicular(90°dihedralangle)withrespecttoeachother.Knowledgecollectedinthisworkmaybeusefulforthedesignofphoto-electronicdevices,suchaselectrochemicalsensors,photovoltaiccells,molecularrectifiersandswitches,etc.

简介：Thebinarycomplexesofeuropiumwithbenzoicacidanditsderivatives(phthalicacid,m-phthalicacid,o-aminobenzoicacid,salicylicacid,andsulfosalicylicacid)weresynthesizedandtheircompositionswereidentifiedbyelementalanalyses.UVandIRofthecomplexeshavebeeninvestigated.TheUVspectraindicatedthatthecomplexes'ultravioletabsorptionweremainlytheligands'absorption.TheIRspectrashowedthattheIRspectraofcomplexesaredifferentfromthoseoffreeligands.Thefluorescencepropertiesofthemwereinvestigatedbyusingluminescencespectroscopy,theresultsshowedthatonlythreecomplexesappearasbetterluminescence,theywereEu-benzoicacid,Eu-m-phthalicacidandEu-phthalicacid,whiletheothersexhibitedtheligands'widebandemission.

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简介：ThemorphologicalchangeofSt/DVBcrosslinkedgelsduringchloromethylationwasstudiedbyfluorescencespectroscopyusingSt/DVBcrosslinkedandhypercrosslinkedgelsascontrolsamples.Ithasbeenfoundthatwithincreaseofchlorinecontent,theexcimeremissionband(～325nm)approachestovanish,whiletheintensityofmulti-ringaggregateemissionband(～420nm)quicklyreachesamaximum,andthendecreasessharplyaccompaniedbyappearanceofanewbroadbandcentredatca488nmwhichroughlycoincideswiththetypicalemissionbandofhypercrossllinkedSt/DVBgels.Mearwhile,theresultofIRmeasurementsuggeststhatmethylenebridgebetweenphenylringsformsandincreaseswithchloromethylationprocess.Theseresultsareexplainedintermsofasidereactionofpost-crosslinking,whichdensifiesthelooselycrosslinkednetworksandundoesthedenselyentangledmicrogelnuclei.Asaresult,themorphologyofthecrosslinkedgelsbecomesmorehomogeneouswithchloromethylation.

简介：Inordertoobtainthethreedimensional(3D)fluorescencespectradirectlyandrapidlybyinsituandinvivophytoplanktonmonitoring,aprototypeoceanlidarsystemwiththeabilityofmeasuring3Dfluorescencespectraisdeveloped,inwhichanopticalparametricoscillator(OPO)andagratingspectrometerareemployed.Usingthesystem,the3Dfluorescencespectraoffivetypicalred-tidespeciesintheEastChinaSeaaremeasuredinlab.Thepreliminaryexperimentalresultsshowthefeasibilityofmonitoringandclassifyingphytoplanktonbythisoceanlidar.

简介：在microfluidic薄片的一样的地方包含同时的LIF和contactless-conductometric大小的一个联合察觉系统被描述。LIF测量根据共焦的原则被设计，一个家具contactless传导性察觉者在C4D被使用。两测量在混合物的分析互相独立、有益。影响反应的各种各样的试验性的参数被检验并且优化。表演被玫瑰精B的同时的察觉表明。并且结果证明联合察觉系统能易感知地并且可靠地被使用。

简介：FluorescencequenchingofjanusgreenB(JGB)insodiumdodecylsulfate(SDS)micellebynucleicacids(DNA)wasstudiedusingUV-visabsorption,steadystatefluorescenceemissionmethodsandlifetimemeasurements.IntheSDSmicelle,weakfluorescenceofJGBwasenhanced,andthemaximumemissionshiftedfrom425to410nm.InthepresenceofDNA,thefluorescenceofJGBwasquenched.Linearrelationshipsbetweenthefluorescencequenching(F0/F)andconcentrationsofDNAwereobservedintherangeof2.4×10^-8to1.08×10^-7mol·L^-1forcalfthymusnucleicacids(ctDNA)and1.9×10^-8to3.8×10^-8mol·L-1forfishspermnucleicacids(fsDNA)when2.5×10^-5mol·L^-1JGBwasemployed.Thelimitdetectionwere1.3×10^-8mol·L^-1forctDNAand6.4×10^-9mol·L^-1forfsDNA.AthighDNAconcentration,therewasasystematicdeviationfromtheStem-Volmerequationduetothestaticanddynamicquenchingoccurringsimultaneously.TheproposedmethodwasappliedtothedeterminationofthenucleicacidsinchickenbloodextractionandtheanalyticalresultswereingoodagreementwiththeUV-method.

简介：Inthispaper,itwasdiscoveredthatanovelpH-sensitivecopolymerofN-isopropylacrylamide(NIP)andN-(3-dimethylaminopropyl)methacrylamide(DMAPM)couldbegottenbypolymerization.ThephasetransitionpH(pHtr)ofP(NIP-DMAPM)polymerwasfoundtobe7.4at37℃.ThepolymerwasprecipitatedoutofwateraboveacriticalpH=7.4andre-dissolvedbelowpH----7.4.Thecharacteristicofthispolymermadeitpossibletocarryouttheimmunochemicalstepsofanimmunoassayinatruesolutionandthentoquicklyseparatetheresultingproductfromthereactionmixture.Inacompetitivefluorescenceimmunoassay,thestandardrabbitIgGandrabbitIgGimmobilizedonP(NIP-DMAPM)firstcompetitivelyreactedwiththefluoresceinisothiocyanate(FITC)labeledantibody,thenthepHofsolutionwasadjustedabovethepHtrofpolymertoprecipitatethepolymer-immunecomplex,andthepolymer-immunecomplexprecipitatewasseparatedandre-dissolvedbytheadjustmentofpH,finallytheFITC-labeledantibodyintheimmunecomplexwasquantifiedbyfluorescencemeasurement.ThecalibrationgraphforrabbitIgGwaslinearovertherangeof100-1000ng/mLwithadetectionlimitof11ng/mL.Themethodisrapid,sensitiveandsimple.OwingtoneutralpHtrofP(NIP-DMAPM),thedamagetoantigen-antibodyimmunecomplexwasgreatlydecreasedinthecourseofseparation.Inaddition,asandwichenzyme-linkedfluorescenceimmunoassaymethodforthedeterminationofhumanIgGwasalsodeveloped,showingthatthepH-sensitivephaseseparatingimmunoassaycouldbeperformedinthecompetitivemethodaswellasthesandwichmethod.

简介：Themethodofthetemperaturemeasurementbasedonthefluorescencelifetimeandfibertransmittingtechnologyisproposed.Thecertainoruncertainrelationshipbetweentemperatureandopticalcharacteristicsofsomefluorescencematerialexcitedbyfunctionpulseorsquare-wavepulse,andthetemperaturerelativityofthefeatureareanalyzed.Themethodbasedonthewavelettransformationtheoryisgiventoacquiretemperaturesignalsaccuratelyandtoremovethenoise.

简介：AnovelacrylicmonomerbearingaromaticetherealitygroupN-(p-phenoxy-phenyl)methacrylamide(MAPOA)wassynthesizedandpolymerized.ThefluorescencespectraofMAPOAanditspolymerwerestudied,showingthatthepolymerdisplaysastrongerfluorescencethanitsmonomeratthesamechromophoreconcentration.ThefluorescenceofP(MAPOA)wasquenchedbyaddingelectrondeficiencymonomerssuchasMMA,ANetc..Itisanotherexampleofshowingthe"fluorescencestructuralself-quenchingeffect"aswereportedpreviously,fromwhichitisdemonstratedagainthatthisphenomenonisnotanaccidentalonebutacommoneffectforacrylicmonomersbearingelecton-donatingchromophores.ThephotopolymerizationofANsensitizedbyMAPOAandP(MAPOA)wasstudied.Thekineticequationofthepolymerizationwasobtainedandrepresentedasfollows:Rp∝[MAPOA]0.38×[AN]0.78,Rp∝[P(MAPOA)]0.33×[AN]0.71TheoverallactivationenergiesweredeterminedtobeEa=24.22kJ/mol(MAPOA)andEa=26.31kJ/mol[P(MAPOA)]respectively.ThefluorescenceanalysisoftheresultedP(AN)showedthatthesensitizeralsoenteredintotheP(AN)chains.AmechanismoftheformationofachargetransfercomplexandfreeradicalinitiationwassuggestedforthephotopolymerizationofANsensitizedbyMAPOAandP(MAPOA).