Different morphologies of self-assembled nanofibers fabricated with   amphiphilic low-molecular-weight azopyridinium salts

doi:10.1039/c3ra44065f

CORC > 北京大学 > 工学院

	Different morphologies of self-assembled nanofibers fabricated with amphiphilic low-molecular-weight azopyridinium salts
	Zhou, Weimin ; Yu, Haifeng
刊名	rsc advances
	2013
关键词	CARBOXYLIC-ACIDS STACKING PYRIDINE NETWORKS BEHAVIOR FIBERS
DOI	10.1039/c3ra44065f
英文摘要	Self-assembled nanofibers with different morphologies were successfully fabricated using amphiphilic low-molecular-weight (LMW) azopyridinium compounds having hydrophobic substituents on benzene groups. The possible driving force and self-assembly principles in nanofiber formation processes were proposed based on measurements of X-ray diffraction (XRD), UV-vis absorption spectra and polarizing optical microscopy (POM). The complicated stackings between azopyridinium salts which were constructed by three aromatic units in azopyridinium molecules, i.e. the stackings between benzene groups (Bz-Bz), pyridine groups (Py-Py) and those of benzene with pyridine groups (Bz-Py), mainly acted as the driving force for formation of LMW-AzPy nanofibers. The changed steric hindrance and hydrophobic properties of substituents on benzene groups resulted in the two aggregation types, head-tail and head-head-tail-tail, of LMW-AzPy molecules. In these cases, the head and tail are hydrophilic and hydrophobic parts of LMW-AzPys molecules, respectively. The analyses and understanding of the driving force and aggregation types of LMW-AzPy nanofibers provides references for fabrication of supramolecularly self-assembled nanofibers with controllable behaviours.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000326056600143&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Multidisciplinary; SCI(E); EI; 4; ARTICLE; 44; 22155-22159; 3
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/227461]
专题	工学院
推荐引用方式 GB/T 7714	Zhou, Weimin,Yu, Haifeng. Different morphologies of self-assembled nanofibers fabricated with amphiphilic low-molecular-weight azopyridinium salts[J]. rsc advances,2013.
APA	Zhou, Weimin,&Yu, Haifeng.(2013).Different morphologies of self-assembled nanofibers fabricated with amphiphilic low-molecular-weight azopyridinium salts.rsc advances.
MLA	Zhou, Weimin,et al."Different morphologies of self-assembled nanofibers fabricated with amphiphilic low-molecular-weight azopyridinium salts".rsc advances (2013).