News Column

Researchers from Fudan University Discuss Findings in Nanoparticles

February 28, 2014



By a News Reporter-Staff News Editor at Science Letter -- A new study on Nanoparticles is now available. According to news reporting originating in Shanghai, People's Republic of China, by NewsRx journalists, research stated, "Single chain Janus nanoparticles (SCJNPs) (tadpole-like Janus nanoparticles) with a PEO (poly(ethylene oxide)) chain as the 'tail' and a cross-linked PCEMA (poly(2-cinnamoyloxyethyl methacrylate)) chain as the 'head' were synthesized conveniently and efficiently by directly photo-cross-linking PCEMA block of PEO-b-PCEMA diblock copolymer in the common solvent DMF; intramolecular cross-linking occurred dominantly at a relatively high concentration of the copolymer when the cross-linking speed is relatively low, leading to SCJNPs. In selective solvent for the 'tails', the rigid 'heads' aggregated into superparticles."

The news reporters obtained a quote from the research from Fudan University, "It is significant that under a gentle ultrasonic treatment (40 kHz for 10 min) the spherical superparticles formed in DMF/ethanol (1/4, v/v) dissociated into individual SCJNPs. It is also demonstrated that even in pure water in which the superparticles have a more closely aggregated structure, there are still hydrophilic channels within the superparticles connecting the surrounding medium and the inside of the sup erparticles, which allows rapid transport of hydrophilic small molecules within the superparticles, as demonstrated by the fast acid quench of fluorescence of the encapsulated ANS (8-anilino-1-naphthalenesulfonate)."

According to the news reporters, the research concluded: "These features should make the superparticles promising in the applications as templates for biomimetic mineralization, highly efficient microreactors for interfacial chemical reactions, and ultrasound responsive nanovehicles for controlled drug release."

For more information on this research see: Structure and Ultrasonic Sensitivity of the Superparticles Formed by Self-Assembly of Single Chain Janus Nanoparticles. Macromolecules, 2014;47(1):365-372. Macromolecules can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Macromolecules - www.pubs.acs.org/journal/mamobx)

Our news correspondents report that additional information may be obtained by contacting F. Zhou, Fudan University, Dept. of Macromol Sci, Shanghai 200433, People's Republic of China. Additional authors for this research include M.X. Xie and D.Y. Chen (see also Nanoparticles).

Keywords for this news article include: Asia, Shanghai, Nanotechnology, Emerging Technologies, People's Republic of China

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Source: Science Letter


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