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leonumn
铁杆木虫 (著名写手)
- 博学EPI: 2
- 应助: 2 (幼儿园)
- 金币: 23565.4
- 散金: 81
- 红花: 2
- 帖子: 1935
- 在线: 204.3小时
- 虫号: 414915
- 注册: 2007-06-28
- 性别: GG
- 专业: 合成药物化学
|
2005 Magnetomicelles:Composite Vol.5,No.10 1987-1991 NanostructuresfromMagnetic NanoparticlesandCross-Linked AmphiphilicBlockCopolymers ? ? ? ,? Byeong-SuKim, Jiao-MingQiu, Jian-PingWang, andT.AndrewTaton* DepartmentofChemistryandDepartmentofElectricalandComputerEngineering, UniVersityofMinnesota,207PleasantStreetSE,Minneapolis,Minnesota55455 ReceivedJuly19,2005;RevisedManuscriptReceivedAugust30,2005 ABSTRACT Wereportthesynthesis,characterization,andcovalentsurfacechemistryof!àmagnetomicelles!–,cross-linked,amphiphilicblock-copolym micellesthatencapsulatesuperparamagneticironoxidenanoparticles.Becausethesecompositenanostructuresassemblespontaneously fromsolutionbysimultaneousdesolvationofnanoparticleandamphiphilicpoly(styrene -block-acrylicacid )components,explicitsurface 250 13 functionalizationoftheparticlesisnotrequired,andtheencapsulationmethodwasappliedtodifferentmagneticnanoparticlesizesand compositions.TEMimagesofthemagnetomicellesillustratedthatthenumberofencapsulatedparticlescouldbedictatedrationallybysynthetic conditions.ThemagneticpropertiesoftheparticleswerecharacterizedbySQUIDmagnetometryandfollowedthegeneralLangevinmagnetic modelforsuperparamagneticmaterials.Themicellarshellsoftheseparticleswerefunctionalizedusingcovalentchemistrythatwouldnot ordinarilybepossibleonthemagneticparticlesurface.Asaresult,thisnoncovalentapproachprovidesanewroutetotechnologicalapplications ofhydrophobicmagneticnanomaterialsthatlackappropriateconjugatesurfacechemistry. |
5楼2009-04-23 08:14:37
leonumn
铁杆木虫 (著名写手)
- 博学EPI: 2
- 应助: 2 (幼儿园)
- 金币: 23565.4
- 散金: 81
- 红花: 2
- 帖子: 1935
- 在线: 204.3小时
- 虫号: 414915
- 注册: 2007-06-28
- 性别: GG
- 专业: 合成药物化学
2楼2009-04-19 09:23:15
a9998382
木虫 (正式写手)
- 博学EPI: 36
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- 散金: 12
- 红花: 3
- 帖子: 589
- 在线: 183.8小时
- 虫号: 670298
- 注册: 2008-12-08
- 性别: GG
- 专业: 材料物理化学
3楼2009-04-19 09:29:00
leonumn
铁杆木虫 (著名写手)
- 博学EPI: 2
- 应助: 2 (幼儿园)
- 金币: 23565.4
- 散金: 81
- 红花: 2
- 帖子: 1935
- 在线: 204.3小时
- 虫号: 414915
- 注册: 2007-06-28
- 性别: GG
- 专业: 合成药物化学
|
2005 Magnetomicelles:Composite Vol.5,No.10 1987-1991 NanostructuresfromMagnetic NanoparticlesandCross-Linked AmphiphilicBlockCopolymers ? ? ? ,? Byeong-SuKim, Jiao-MingQiu, Jian-PingWang, andT.AndrewTaton* DepartmentofChemistryandDepartmentofElectricalandComputerEngineering, UniVersityofMinnesota,207PleasantStreetSE,Minneapolis,Minnesota55455 ReceivedJuly19,2005;RevisedManuscriptReceivedAugust30,2005 ABSTRACT Wereportthesynthesis,characterization,andcovalentsurfacechemistryof!àmagnetomicelles!–,cross-linked,amphiphilicblock-copolym micellesthatencapsulatesuperparamagneticironoxidenanoparticles.Becausethesecompositenanostructuresassemblespontaneously fromsolutionbysimultaneousdesolvationofnanoparticleandamphiphilicpoly(styrene -block-acrylicacid )components,explicitsurface 250 13 functionalizationoftheparticlesisnotrequired,andtheencapsulationmethodwasappliedtodifferentmagneticnanoparticlesizesand compositions.TEMimagesofthemagnetomicellesillustratedthatthenumberofencapsulatedparticlescouldbedictatedrationallybysynthetic conditions.ThemagneticpropertiesoftheparticleswerecharacterizedbySQUIDmagnetometryandfollowedthegeneralLangevinmagnetic modelforsuperparamagneticmaterials.Themicellarshellsoftheseparticleswerefunctionalizedusingcovalentchemistrythatwouldnot ordinarilybepossibleonthemagneticparticlesurface.Asaresult,thisnoncovalentapproachprovidesanewroutetotechnologicalapplications ofhydrophobicmagneticnanomaterialsthatlackappropriateconjugatesurfacechemistry. |
4楼2009-04-23 08:14:16