生物分子輔助合成硫化物納米結(jié)構(gòu)與性質(zhì)研究.pdf

1、中國科學技術(shù)大學碩士學位論文生物分子輔助合成硫化物納米結(jié)構(gòu)與性質(zhì)研究姓名：左凡申請學位級別：碩士專業(yè)：無機化學指導教師：謝毅20070401!墾登蘭壟查大蘭堡主蘭竺絲莖ABSTRACTInthisdissertation，solutionbasedbiomoleculeassistedmethodwasdevelopedformemorphologycontrolledsynthesisofmetalsulfidesT11eformat

2、ionmechanismandtheopticalpropertieswereinvestigatedindetailAfacilebiologicalapproachwasdevelopedtofabricatemetastableyMnSandPbSnanostrueturesusingLeysteineasboththesulfurSOUreccandthedirectingmoleculeunderhydrothermalcon

3、ditionsTheopticalpropertiesofthosesulfideswerestudiedsystematicallyandthedependenceofthesenanosffuetures’propertiesontheirshapesWasdiscussedThebiomoleculeLcysteineapproachWasdeveloped，forthefirsttime，tosynthesizemetastab

4、le7MnSporousnetworkswithhighcrystallinityTheas—preparedMnSnetworklikenanostructuresformedviaanovelmagneticforceinducedrearrangementmechanismneauthorfurtherextcndcdthissimplebiomoleculeassistedapproachtogenerateoriginalpa

5、godalikePbSnanocubeassemblybyaonestepsolutionmethodThedetailsansummarizedasfoIlowsIAsimpleLcysteineassistedmethodWasdevelopedtOpreparemetastable7MnSnetworklikenanosfxucturesLcysteine，asmallbiomolecule，Wasfoundtoserveasbo

6、ththeSsourceandthedirectingmoleculeintheformationofmanganesesulfidananostructuresWhenformingtheMnSnetworks，theLcysteineprovidedmildSsource，whichensuredthattheMnScouldbeslowlyreleasedandcrystallizedgavingthemagneticMnSpar

7、ticlesachancetObeorientedattachedMeanwhile，thefunctionalgroups(一SH，COOH，一NH2)inLcysteinecanordinatewithMnz，whichmakestheLcysteineactasadirectingmoleculeThefurtherresearchindicatedthatthemagneticinteractionoftheMnSmateria

8、lalsoplayedacriticalrole，whichstimulatedtheMnSnanospherestOaccumulate，contactreformandevolvetonetworksByadjustingtheexperimentalparameters(experimentaltemperature，experimentaltime，molarratioofthereagents，PHvalueetc)，weca

9、ncontrolbeththephaseandthemorphologyofthefinalproductsItisfoundthattheas—preparedporousnetworksexhibitoriginalopticalproperties2Theauthorfurtherextendedthisfacilebiomoleculeassistedapproachtoheterogeneoussystemtosynthesi

10、zecubicPbSpagodalikenanocubeassemblybyone‘stephydrothermalteohniqueDifferentfromfamiliarassemblyordendrites。whichareusuallyconstructedbynanoflakesornanopods，theaspreparedPbSpagodalikeassemblyismadeupofthousandsofnanocube