Rayleigh Instability Induced Cylinder-to-Sphere Transition in Block Copolymer Micelles: Direct Visualization of the Kinetic Pathway

	Rayleigh Instability Induced Cylinder-to-Sphere Transition in Block Copolymer Micelles: Direct Visualization of the Kinetic Pathway
	ACS MACRO LETTERS
刊名	wang, lulu; huang, haiying; he, tianbai
	2014
卷号	3 期号:5 页码:433-438
关键词	ELECTROSPUN POLYMER FIBERS CYLINDRICAL MICELLES INTERFACIAL INSTABILITIES RELAXATION KINETICS DIBLOCK COPOLYMERS ASSEMBLIES DRIVEN TRANSFORMATION RELEASE MICELLIZATION
通讯作者	huang,hy
英文摘要	direct visualization of morphological evolution remains extremely challenging despite its critical importance to understand the basic fundamentals behind the transition. here we report on the detailed observation of a spontaneous cylinder-to-sphere morphological transformation of amphiphilic poly(2-vinylpyridine)-b-poly(ethylene oxide) (p2vp-b-peo) diblock copolymer micelles in aqueous solution, which first provides experimental evidence that the fragmentation pathway is driven by rayleigh instability showing the distinctive signatures during the transition. owing to the instability of cylindrical micelles and the fluidity of micellar cores, our results show that the cylindrical micelles spontaneously undulate and transform into spherical micelles through distinct intermediate states, including undulated cylinders and pearl-necklace-like micelles with a perfect sinusoidal wave throughout the length. moreover, the present system with transitional morphology is proved to be able to act as a model to encapsulate hydrophobic guests in the micellar cores, which displays a relatively sustained release behavior. the specific kinetic pathway provides new insight into the mechanism of block copolymer micellar morphological transition; meanwhile, the dynamic system might serve as a promising candidate for unique nanostructure design as well as contribute to the transition-coupled guest delivery and controlled release.
收录类别	SCI
语种	英语
WOS记录号	WOS:000336418000008
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/53019]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	ACS MACRO LETTERS. Rayleigh Instability Induced Cylinder-to-Sphere Transition in Block Copolymer Micelles: Direct Visualization of the Kinetic Pathway[J]. wang, lulu; huang, haiying; he, tianbai,2014,3(5):433-438.
APA	ACS MACRO LETTERS.(2014).Rayleigh Instability Induced Cylinder-to-Sphere Transition in Block Copolymer Micelles: Direct Visualization of the Kinetic Pathway.wang, lulu; huang, haiying; he, tianbai,3(5),433-438.
MLA	ACS MACRO LETTERS."Rayleigh Instability Induced Cylinder-to-Sphere Transition in Block Copolymer Micelles: Direct Visualization of the Kinetic Pathway".wang, lulu; huang, haiying; he, tianbai 3.5(2014):433-438.