烷氧磺酸盐功能化的聚乙撑二氧噻吩水凝胶.pdf

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1、物理化学学~(WuliHuaxueXuebao)OctoberActa尸．一Chim．Sin．2012，28(10)，2305—23142305[Article]doi：10．3866／PKU．WHXB201209142www．whxb．pku．edu．cn烷氧磺酸盐功能化的聚乙撑二氧噻吩水凝胶杜然张学同f北京理工大学材料学院，北京100081；。北京大学化学与分子工程学院，北京100871)摘要：通过氧化偶联聚合方法成功地制备出一种基于烷氧磺酸盐功能化的聚乙撑二氧噻吩水凝胶，揭示了零维单体胶束向二维纳米片层及三维水凝胶的转变过程，发现通过改变反应温度或初始单体浓度

2、，可以诱导水凝胶网络结构单元的维度变化，即由零维纳米粒子向二维纳米片层进行转化．提出了一种导电高分子水凝胶的合成方法，即采用一种氧化剂与一种多价金属盐的混合物作为引发剂，其中前者用于诱导单体聚合，后者则充当离子交联试剂，并发现可以通过引入不同金属离子来改变凝胶的形貌．此外，导电高分子水凝胶具有良好的电化学电容，并具有选择性吸附与可控脱附某些染料分子的特性．关键词：导电高分子：水凝胶：电化学：染料：过氧化中图分类号：0648Alkoxysulfonate-FunctionalizedPoly(3，4-ethyIenedioxythiophene)HydrogelsDU

3、Ran’一ZHANGXue—Tong’'fSchoolofMaterialsScience＆Engineering,BeijingInstituteofTechnology,Beo'ing100081，R．China；CollegeofChem~tryandMolecularEngineering,PekingUniversity,Beo'ing100871，R．China)Abstract：Conductingpolymerhydrogelsbasedonalkoxysulfonate—functionalizedpoly(3，4-ethylenedi0xythi

4、ophene)havebeensynthesizedviaoxidativecouplingpolymerization．Formationofhydrogelsfr0mzerodimensional(0D)monomermicellestothreedimensional(3D)hydrogelswithtwodimensionaI(2D)nanosheetsasthebuildingblocksanddimensionchangeofthebuildingblocksoftheresultinghydrogelsfrOm0Dnanopa~iclesto2Dnan

5、osheetsinducedbyalteringthereactiontemperatureorinitialmonomerconcentrationhavebeendisclosed．Asyntheticstrategyforthesynthesisoftheconductingpolymerhydrogelsbasedonsimultaneoususeofonechemicalasanoxidantandonemultivalentmetalionasanioniccrosslinkerhasbeendeveloped．andmetaIionsusedhaves

6、ignificanteffectonthemorphologyoftheresultinghydrogels。Inaddition，theas-preparedconductingpolymerhydrogelspossessgoodelectrochemicalcapacity，andexhibitselectiveadsorptionandcontrollablereleasetowardssomedyemolecules．KeyWords：Conductingpolymer；Hydrogel；Electrochemistry；Dye；Over-oxidatio

7、n1Introducti0nmensional(3D)bulkmaterialsduetotheiramazingmechani—Twodimensional(2D)polymersareexpectedtohavegreatcalorelectricalproperties．Utilizationofcovalentbondingorimpactonfundamentalscienceandappliedengineering，andself-assemblyofsmallfragmentscanallowtheformationoftheymaybeused