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1、_1nEITI_⑩天串大薯博士學(xué)位論文一級(jí)學(xué)科：些鱟王!!皇絲查學(xué)科專業(yè)：垂旦竺堂作者姓名：堡地塑指導(dǎo)教師：陣立功教授月ABSTRACTInthisworkaseriesofpolyalcoholacetalderivativesasgelatorswelqesynthesizedTherelationbetweenstructureandgelationabilitywerestudied，andtheapplicationofnan

2、o—materialwereachieved36compoundsofwerepreparedbycondensationbetweenaromaticaldehydeandployalcoholsuch齬sorbitol，mannitol，xylit01thenesterificationandacylafionnlestructureoftheproductshavebeenconfirmedbyNMRandLCMSTbispape

3、rindicatedthatitwasgoodforcondensationreactionwhenbenzeneringbearingelectron—attachinggroupsItalsoshowedthatandthe6hydroxylgroupcouldbereactedwithacylhalide，haloidetherandhaloalkene，butnotwithhaloalkaneItwasnotonlythefir

4、sttimetofindthatthereactionproductofDmannitolandaromaticaldehydeistri—condensationderivativesbutalsothefirsttimetoobtainthepphthaldehydesorbitolderivativescontainingeighthydroxylgroupsThegelationabilivyofthepolyalcoholac

5、etalderivativesWasevaluatedItshowedthatmostcompoundspossessedthegelationabilitiesandformedtransparentthermoreversiblegelswithminimumgelationconcertrationof1w％inawiderangeoforganicsolventscontainingoxygenatomsuchasalcohol

6、sketonesandethersetcItWasnotedthatalkylalcoholandanisolehadgreatergelationabilitythanarylalcohol，cyclicalcoholandketone，Surprisingly，thegelationabilitywillbegreatlydroppedwhenaliRlewaterWasaddedinthesolventItWaSfoundfirs

7、tlythatthecompoundswhenbenzeneringbearingaminogroupwouldlosetheirgelafion如ili毗ThetransmissionelectronmicroscoperevealedthatthegelsformedhadSfibfillarstructurefromabout50to100nmindiameterThefibresfurtherformed丑nentangledn

8、etworkthatwasresponsiblefortheentrapmentofsolventmoleculesduringgelationTheenthalpyofgel—soIphasetransitionbyhydrogenbondingWas55，4KJtool“1forcompound3inglycerol(25“C)FTIRstudiesrevealedthattheaggregatesandselfassemblyof

9、thegelatorsoccurredasaresultofcooperatingnon—COValentinteractionssuchasintermolecularhydrogenbondingXraydiffractionanalysisillustratedthatdry—gelstatecouldkeepthefibrillarnetworkstructureofthegelstateUsingorganogelfibers

10、formedbythepolyalcoholacetelderivatiesgelatorsasatemplate，theSi02andTi02nanoparticleswerepreparedthefirsttimemTi02particlesareanatasecrystalformwith1020nlTlindiameterandtheSi02particlesareuncrystallizedTheTi02nanoparticl

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