典型文献
Templating core-shell particles using metal ion-chelating biosurfactants
文献摘要：
Designer biosurfactants can be used to stabilise and functionalise interfaces.One particularly promising use is the stabilisation of oil-in-water emulsions,enabling fine tuning physical,chemical and biological surface properties.The ability of emulsion systems to carry high payloads makes them attractive for appli-cations in medicine,food and fragrances,and cosmetics.However,they have limited long-term stability.Here we sought to use the metal ion-chelating ability of the biosurfactant peptide,AM1,to precipitate the formation of a gold metal shell on AM1-stabilised emulsions by electroless plating.We found that replacing the commonly used zinc(Ⅱ) with palladium(Ⅱ) for coordination by histidine residues of adjacent AM1 peptides produced interfacial films that maintained elasticity at acidic pH.Proton NMR suggested a coordination mechanism independent of the imidazole ring of the histidines.Nevertheless.stabilisa-tion of emulsions at low pH enabled the deposition of a gold shell,albeit by an unexpected mechanism.We propose that gold nanoparticles forming in bulk are adsorbed onto the peptide-stabilised interface,accumulating into a particulate coating.The resulting one-step method for nanoparticle precipitation and shell formation will be useful for the creation of biocompatible core-shell particles for applications where large payloads of hydrophobic active compounds require stability over long time periods.
文献关键词：
中图分类号：
作者姓名：
Ching-Min Yeh;Thomas Jarrett;Yuan Gao;Chun-Xia Zhao;Andrew Whittaker;Frank Sainsbury;Alison L.White
作者机构：
Australian Institute of Bioengineering and Nanotechnology,The University of Queensland,St.Lucia,Queensland,4072,Australia;ARC Centre of Excellence in Convergent Bio-Nano Science and Technology,The University of Queensland,St Lucia,4072,Australia;Centre for Cell Factories and Biopolymers,Griffith Institute for Drug Discovery,Griffith University,Brisbane,QLD,4111 Australia;CSIRO Probing Biosystems Future Science Platform,Brisbane,Australia
文献出处：
引用格式：
[1]Ching-Min Yeh;Thomas Jarrett;Yuan Gao;Chun-Xia Zhao;Andrew Whittaker;Frank Sainsbury;Alison L.White-.Templating core-shell particles using metal ion-chelating biosurfactants)[J].颗粒学报（英文版）,2022(05):145-152
A类：
biosurfactants,stabilise,functionalise,fragrances,biosurfactant,stabilised,histidines,stabilisa
B类：
Templating,core,shell,using,metal,chelating,Designer,can,used,interfaces,One,particularly,promising,stabilisation,oil,water,emulsions,enabling,fine,tuning,physical,chemical,biological,surface,properties,systems,carry,high,payloads,makes,them,attractive,medicine,food,cosmetics,However,they,have,limited,long,term,stability,Here,sought,AM1,precipitate,formation,gold,by,electroless,We,found,that,replacing,commonly,zinc,palladium,coordination,residues,adjacent,peptides,produced,interfacial,films,maintained,elasticity,acidic,Proton,NMR,suggested,mechanism,independent,imidazole,ring,Nevertheless,low,enabled,deposition,albeit,unexpected,propose,nanoparticles,forming,bulk,are,adsorbed,onto,accumulating,into,particulate,coating,resulting,one,step,method,precipitation,will,useful,creation,biocompatible,applications,where,large,hydrophobic,compounds,require,over,periods
AB值：
0.551391
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